Cornish Mineral Reference ManualPeter Golley and Richard Williams
April 1995

First published 1995 by
Endsleigh Publications in association with Cornish Hillside Publications© Endsleigh Publications 1995

ISBN 0 9519419 9 2

Endsleigh Publications
Endsleigh House
50 Daniell Road
Truro, Cornwall TR1 2DA
EnglandPrinted in Great Britain by Short Run Press Ltd, Exeter.

Introduction
Cornwall's mining history stretches back 2,000 years; its mineralogy dates fromcomparatively recent times. In his Alphabetum Minerale (Truro, 1682) Becher
wrote that he knew of no place on earth that surpassed Cornwall in the number andvariety of its minerals. Hogg's 'Manual of Mineralogy' (Truro 1825) is subtitled'in wich [sic] is shown how much Cornwall contributes to the illustration of thescience', although the manual is not exclusively based on Cornish minerals. It was
Garby (TRGSC, 1848) who was the first to offer a systematic list of Cornish species,
with locations in his 'Catalogue of Minerals'. Garby was followed twenty-three
years later by Collins' A Handbook to the Mineralogy of Cornwall and Devon'(1871; 1892 with addenda, the latter being reprinted by Bradford Barton of Truro in1969). Collins followed this with a supplement in 1911. (JRIC Vol. xvii, pt.2.).
Finally the torch was taken up by Robson in 1944 in the form of his 'Cornish
Mineral Index' (TRGSC Vol. xvii), his amendments and additions were published in
the same Transactions in 1952. All these sources are well known, but the next toappear is regrettably much less so. it would never the less be only just to mention
Purser's 'Minerals and locations in S.W. England' (1974). The work was neverpublished, although there is a copy in the Royal Institution of Cornwall's Library at
Truro, and is worthy of mention here as a tribute to that gentleman's colossal
industry in researching its contents. Finally in 1984, appeared 'A Cornish
Mineral Miscellany' by one of the present writers - PG. (published privately). No
locations were given, but addenda have been compiled with some regularity eversince!
The present work represents an up-to-date list of the minerals known to be found in
Cornwall together with a reference for the occurrence of each species within theCounty. In a very few cases recourse has had to be made to personalcommunications, all of which have been verified. The entries listed in bold type arethose whose occurrence in the county is beyond doubt. entries not in bold type, havebeen reported but are either of questionable occurrence. or require further analysis.
The species are listed in capitals. a few minerals which were accepted as distinct
species in the original editions of Hey (1950) or the supplements (1963 and 1974)
but which no longer hold species status have been included. where appropriate,
lower case. A total of 424 species are recorded as occurring in the county of which
36 were first recorded fronm Cornwall and 136 whose first British recorded
occurrence was in Cornwall, a further 52 species are listed whose occurrence within
the county requires confirmation. One mineral listed. Abhurite. occurs off the northcoast of Cornwall.
It was decided at an early stage to restrict the number of localities cited in the caseof the more common species, the selection has been a personal one, the numberof localities cited for the commoner species should not therefore be looked upon
as a reflection of the frequency of occurrence of the minerals involved.
The writers' gratitude is due to a great number of collectors whose information has
been of great value and interest, special thanks are due to Barry Gamble, Maurice
Grigg, Nick Elton Vincent Holyer, Jeremy Hooper, Mike Merry and Colin
Sparrow. Thanks are also due to the late Mrs. J. Newport, Honorary Librarian of

the Royal Geological Society of Cornwall, who was most helpful and enthusiastic in
assisting in the locating of references and also to the librarians of the Camborne
School of Mines Library and The Cornish Studies Library, Redruth, who haveenthusiastically assisted in reference searches. Particular thanks are due to Paul Lowe
who suggested that the researches of the authors should be combined into this workand for his encouragement over the months that it has been in preparation. The
authors are also greatly indebted to Dr. George Ryback for checking the original proof
and for his many constructive suggestions.
Early in the preface reference was made to Garby; his charming apologia for what
he omitted from his catalogue will more than suffice for the present work: 'That it is notvery defective, the writer has not the presumption to hope' The present writers
would greatly appreciate having any errors, omissions or new finds drawn to theirattention.
Peter Golley
Okehampton,
Devon Cornwall,

Richard Williams
Camborne,

Main References and Abbreviations
CASSITERITE species whose occurrence in Cornwall is without doubt.
SEMSEYITE species whose occurrence in Cornwall is reported but requires
confirmation
Likasitemineral not listed in Hey 3 as a species

TL

Type locality (first described from this locality)

BI

First recorded in the British Isles at this site.

BM(NH)

British Museum (Natural History)

JRIC

Journal of the Royal Institution of Cornwall

TRGSC

Transactions of the Royal Geological Society of Cornwall

Am.Min.

American Mineralogical Magazine

Can.Min.

Canadian Mineralogist

Min.Abstr.
Mineral.Mag.

Mineralogical Abstracts
Mineralogical Magazine

Min.Rec.

Mineralogical Record

UKJMM

UK Journal of Mines and Minerals

Proc.Ussher Soc.

Proceedings of the Ussher Society

J.Russell Soc.

Journal of the Russell Society

CSM

Camborne School of Mines, University of Exeter

Hey 3

A. M. Clark (1993) Hey's Mineral Index, 3rd edition.

W.Borlase (1758)

The Natural History of Cornwall. Oxford.

J.H.Collins (1871)

A Handbook to the Mineralogy of Cornwall andDevon. London and Glasgow.

J.H.Collins (1892)

A Handbook to the Mineralogy of Cornwall and Devon. Second
edition with addenda.

J.H.Collins (1911)

JRIC 18, 425-461. A list of minerals found in
Cornwall with notes supplementary to the author's
handbook.

J.Garby (1848)

TRGSC 7, 72-92. A catalogue of the minerals foundin Cornwall with their localities.

Greg and Lettsom (1858) R.P.Greg and W.G.Lettsom Manual of Mineralogy

of Great Britain and Ireland. London.
Hey2 M.H.Hey (1975) Chemical Index of Minerals, 2ndedition.
T.Hogg (1825)

A Manual of Mineralogy. Truro.
Observations Relative to die Mineralogical andChemical History of the Fossils of Cornwall.

M.H.Klaproth (1801)Analytical Essays Towards Promoting the Chemical
Knowledge of Mineral Substances. Vol. 1. London(translated)
M.H.Klaproth (1804) Vol.2. London (translated)
W.Phillips (1817)

An Elementary Introduction to Mineralogy. London.

W.Phillips (1819)

An Elementary Introduction to Mineralogy. London. 2nd ed.

W.Phillips (1823)

An Elementary Introduction to Mineralogy. London. 3rd ed.

W.Phillips (1837)

An Elementary Introduction to Mineralogy. London. 4th ed.
R.Allan

RGSC.,150th ann.vol. Present Views of Some Aspects of the Geology ofCornwall and Devon. 150th Anniversary of theinauguration of the Royal Geological Society ofCornwall. Penzance 1964.
N&N

E.H.Nickel and M.C.Nichols (1991) Mineral Reference Manual

EM

W.L.Roberts. T.J.Campbell and G.RRapp (1990)
Encyclopaedia of Minerals 2nd.ed.

SLBM1&2

H.G.Macpherson (1983) Min.Mag. 47, 243-257. References
for, and updating of. L.J.Spencer's first and second
supplementary lists of British minerals.

SLBM3

L.J.Spencer (1958) Min.Mag. 31. 787-805. Third
supplementary list of British minerals.

SLBM4

P.G.Embrey (1978) Min.Mag. 42, 169-177. Fourth
supplementary list of British minerals.

SLBM7

G.Ryback. R.Nawaz and E.Farley (1988) Min.Mag. 52, 267
274. Seventh supplementary list of British Isles minerals (Irish)

SLBM8

G.Ryback and P.Tandy (1992) Min.Mag. 56, 261-275. Eighth
supplementary list of British Isles Minerals (English)

ABHURITE
Sn3O(OH)2C12.
X-rd by Dr.D.Green, Manchester University Museum No. Manch: Xrd 196. April
1995. B.Gamble specimen from encrustations coating ingots of refined Cornish tin.
From the wreck of the SS Cheerful, 18 miles NNW of St.Ives.
BI
ACANTHITE
Ag2S.
F.W.Rudler(1905)
Handb.Collect.Mins.Brit.Isles 56. No record of naturally occurring acanthite in
Cornwall is known to the authors, all localities given are for acanthite
pseudomorphous after argentite.
Wheal. Ludcott, St Ive
New Trelawny Mine, St Ive
Wheal Herland, Gwinear
Wheal Ann, Phillack
Wheal Brothers\Wh.Duchy, Calstock
Wheal Mexico, Perranzabuloe
Wheal Basset\South Wh.Basset, Illogan
Dolcoath Mine\North Dolcoath, Camborne
Wheal Langford, Calstock
Mount Mine, Perranuthnoe
Greystone Quarry, Lezant (on silver)
Achroite, a colourless variety of tourmaline (Hey 3), a variety or synonym of
elbaite (EM and N&N). J.H.Collins (1876) Mineral Mag., 1, 55.
Roscommon Cliff, St.Just
Stenna Gwyn Mine, St. Stephen in-Brannel
Rock Hill Tin Works, St.Austell
Gunheath China Clay Pit, St.Austell
Goonbarrow China Clay Pit, St.Austell
ACTINOLITE
Ca2(Mg,Fe+2)SSi 8O22(OH)2.
W.Phillips (1819) 55-6.
Carrick Du Quarry, St Ives
BotallackMullion Coverack Cadgwith
Dolcoath Mine, Camborne
Wh.Maudlin, Lanlivery
Clicker Tor Quarry, Menheniot
Gt. Retallack Mine, Perranzabuloe
Delabole Slate Quarry
ADAMITEZn2AsO4(OH).
A.W.G. Kingsbury.(1958)Min. Soc. Notice No. 100.
Penberthy Croft Mine, St Hilary
Wheal Carpenter, Gwinear
Pengenna Mine, St Kew

Adularia, variety of Orthoclase q.v..
AEGIRINE
NaFe3+Si 2O6.
J.J.H. Teall.(1888). British Petrography, 368.
Wolf Rock BI
AERUGITE
Ni9AS3O16.
R.J.Davis, M.H.Hey, and A.W.G.Kingsbury.(1965) Mineral.Mag. 35, 72.
South Terras Mine, St Stephen-in-Brannel BI
Agardite(Nd,Ca)Cu6(AsO 4)3(OH)6.3H2O.
J.E.Dietrich, M.Orliac and F.Permingeat (1969) Bull.Soc.Fr.Mineral Crist., 92, 42034. Specimen BM 81970, Nd rich, appears not to be Nd dominant.
Wheal Alfred, Phillack BI
Agardite-(Ca)An incompletely characterised member of the mixite group.
X-rd by S. Weiss Munich University.
Penberthy Croft Mine, St. Hilary BI
Croft Gothal Mine, St. Hilary
Agardite-(Ce)An incompletely characterised member of the mixite group.
Russell Soc. Newsletter (1991) 22, 7.
Penberthy Croft Mine, St.Hilary BI
Wheal Alfred, Gwinear Agnesite see Bismutite
H.J.Brooke and W.H.Miller (1852) 591. Shown to be bismutite by A.M.Clark,
A.G.Couper, P.G.Embrey and E.E.Fejer (1986) Mineral.Mag. 50, 731.
Wheal Coates St.Agnes TL
AHEYLITE(Fe 2+,Zn)Al6(PO4)4(OH),.4H2O.
P.J.Golley specimen, ex P.Seroka collection, acquired 1987. Requires analysis.
Goonbarrow China Clay Pit, St.Austell
AKAGANEITE
β-Fe3+O(OH).
8SLBM C.Sparrow 1991.
Gravel Hill Mine, Perranzabuloe
ALABANDITE
MnS.
3SLBM (1958) C.E. Tilley. 1944. (Private Comm.).
Tintagel BI
Bodmin Wheal Mary

ALBITENaAlSi3O8.
Greg and Lettsom (1858) 113.
Lanterdan Quarry, Tintagel
Geevor Mine, St.Just
Trewavas Head, Breage
Tremearne Pegmatite, Breage
ALLANITE - (orthite)
J.S.Flett and J.B.Hill (1946) Geol. of the Lizard and Meneage, 59 and 112.
Man of War Gniess, The Lizard
Enys Head, The Lizard Kennack, Lizard
ALLANTTE-(Ce)(Ce,Ca,Y)2(A1,Fe3+)3(SiO4)3OH.
C. Sparrow (pers. comm. D.Kneebone). Russell Soc. SW Field Note. 1991. Geevor
Mine, St. Just
ALLOCLASITE(Co,Fe)AsS.
P.G.Embrey and R.F.Symes (1987) Minerals of Cornwall and Devon. 39. WherryMine, Newlyn
ALLOPHANE
xA12O3.YSiO2.zH2O. (N&N)
J.H.Collins (1871) pt. 2, 2.
Phoenix Mine, Linkinhome
Garras Mine, St Erme (Schrötterite)
Port Quin Mine, St.Endellion
Hawkswood Mine, North Hill
Wheal Hazard, St.Just
ALLUAUDITE(NaCa)Fe2+(Mn,Fe2+,Mg)2(PO 4)3.
M.Stone and M.C.George.(1983) Proc. Ussher Soc. 5, 428-31.
Tremearne Pegmatite, Breage BI
ALMANDINE
Fe+2+3A12(SIO4)3.
A.R.Alderman (1935) Mineral.Mag. 42, 42-8.
Chycornish Carn, St.Just
Botallack, St.Just
Troon, Camborne
ALUMINOCOPIAPITE(AI,Mg)Fe3+4(SO4)6O(OH).20H2O.
CSM specimen erroneously labelled Coquimbite. Specimen X-rd by N.Elton and
J.Hooper 1993
Dolcoath Mine, Camborne BIALUNOGEN
Al2 (SO4)3 17H2O
A.Russell, (1949) Mineral.Mag. 27, 532.
Wherry Mine, Newlyn
Dolcoath Mine, Camborne (BM 1915,186)
AMBLYGONITE (Li,Na)Al(PO4)(F,OH).
C.S.Exley and M. Stone (1964) RGSC., 150th ann.vol. 144-45.
Rinsey Head, Breage BI
ANALCIMENaAlSi 2 O 6 .H,O.
J.H.Collins (1871) Pt2, 5. Occurrence doubtful, 'said to have been found'.
V.A.D.Holyer (1972) The Lizard, 4, 4.
Dean Quarry, St Keverne
Porthoustock Quarry, St Keverne
Holseer, The Lizard (altered to orthoclase)
Parc Bean Cove, Mullion Predannack Head, The Lizard
Pol Cornick, The Lizard
Kildown, The Lizard
Holseer Cove, The Lizard
Carn Barrow, The Lizard
Porthkerris Quarry, The Lizard
Botallack, St.Just
ANATASE
TiO2.
W.Phillips (1823) 258. ('Comte de Bournon cites a crystal on granite from Cornwall
as being in his own collection'. Cornwall BI
Hingston Down Quarry, Calstock
Wheal Zion, Calstock
Prince of Wales Quarry, Tintagel
Wheal Remfry, St Austell
Delabole Slate Quarry
Looe Mills Quarry
Prince of Wales Mine, Calstock
ANDALUSITE
A12SiO5.
C.Le N.Foster (1876) Mineral.Mag. 1, 73. (chiastolite)
Bosworgey Mine, St.Erth
Cligga Head, Perranzabuloe
Wheal Coates, St Agnes
Roskear Mine, Camborne Cheesewring Quarry, Linkinhorne
Roughtor, Camelford
ANDERSONITE
Na,CaUO2(CO3)3.6H,O.
N.Elton and J.Hooper.(1992) Mineral.Mag. 56, 124-25.
No 17 Level, Peeth Lode, Geevor Mine, St.Just BIAndesine(Na Ca)(Si,Al)4O8.
(N&N) J.S.Flett and J.B.Hill (1946) The Geology of the Lizard and Meneage, 15 &40.
Polkernogo
In the Kennack gneiss
ANDRADITE
Ca3Fe3+2Si 3O12.
A.Russell (1946) Mineral.Mag. 27,227.
Treburland Manganese Mine, Altarnun
South Terras Mine, St Stephen-in-Brannel
Tretoil Mine, Lanivet
Botallack, St-Just (Hydro-andradite)
ANGLESITE
PbSO4.
W.Phillips (1819) 258-9. (sulphate of lead)
R.K.Harrison and K.Taylor (1966) Bull.Geol.Surv.GT.Britain 25, 41. (Variety
radian)Trevinnick Mine, St Kew
Greystone Quarry, Lezant
Mellanoweth Mine, Hayle
Wheal Carpenter, Gwinear
Wheal Rose, Sithney
Wheal Penrose, SithneyWest Wheal Chiverton, Perranzabuloe
Pentire Glaze Mine, St.Minver
Polzeath Consols, St.Minver
Wheal Speed ( BI radian anglesite)
Andrewsite, a discredited specie.
N. S. Maskelyne (1871) Chem. News 24, 99.
P.J.Dunn (1990) Am. Min. 75, 1197-9. Shown to be a mixture of hentscheelite,
rockbridgeite, chalcosiderite and barbosalite.
Phoenix United Mines, Linkinhorne
ANKERTTE
Ca(Fe,Mg,Mn)CO 3)2.
Russell ms. BM(NH) 1949.
S.O.Agrell (1941) Mineral.Mag. 26, 81-93.
Tolpetherwin Mine, South Petherwin
Wheal Boys, Endellion
Herodsfoot Mine, Lanreath
Eastern Cliff, Kennack
Trebullet Mine, Lezant
Port Quin Mine, Endellion
Tresungers Mine, Endellion

Poltreworgey Mine, Endellion
Greystone Quarry, Lezant
ANNABERGITE
Ni3(AsO 4)2.8H2O.
W. Phillips (1819) 212. (Nickel ochre)
Fowey Consols/Lanescot, Tywardreath
Pengelly Mine, St Ewe Wheal Chance, St Ewe
Wheal Jane, Kea
St Austell Consols
South Terras Mine, St Stephen-in-Brannel
ANORTHI TE
CaA12Si2O8.
E.H.Adye (1907) Modem Lithology, W.&A.K.Jolmson Ltd. Edinburgh andLondon. 47. (feldspar when fresh was probably anorthite)
Clicker Tor Quarry, Menheniot.
ANTHOPHYLLITE(Mg,Fe2+)7Si 8O22(OH)2.
J.J.H.Teall (1888) Mineral.Mag. 8, 116-120.
Pen Voose, The Lizard
Pistil Ogo, The Lizard
Polkernogo, The Lizard
Kenidjack Cliff, St Just
Botallack, St.Just
ANTIGORITE(Mg,Fe2+)3Si205(OH)4.
H. Midgley (1950) Mineral.Mag. 29, 526-530.
X-rd confirmed BM(NH)Countybridge Quarry, The Lizard
Clicker Tor Quarry, Menheniot
ANTIMONPEARCEITE(Ag,Cu)16(Sb,As)2S11.
R.E.Clayton,R.C.Scrivener and C.J.Stanley (1990) Proc.Ussher.Soc., 7,258-262.
Pentire vein system, St Minver BI
ANTIMONY
Sb.
R.A.Ixer and C.J.Stanley (1980) Mineral.Mag. 43, 1029.
Pengenna Mine, St Kew BI
Antimony ochres
W.Phillips (1823) 332. (antimonal ochre) see bindheirnite and stibiconite
Wheal Boys, St Endellion BI
Trenute and Trebullet Mines, Lezant

ANTLERITE
Cu3SO 4(OH)4.
A.W.G. Kingsbury.(1954) TRGSC.18, pt 4.(for 1952) 338.
Old Gunnislake Mine, Calstock BI
Tresavean Mine, Gwennap
Wheal Hazard, St.Just
Botallack Cliff, St.Just
Apatite, in modern usage a group name, most, if not all, Cornish apatites areprobably fluorapatite (q.v.).
APOPHYLLITE
KCa4Si 8O20(F,OH).8H2O.
A.Russell (1910) Mineral.Mag. 15, 382. (apophyllite, found 1907)
Terrace Hill Quarry, Lostwithiel
Levant Mine, St. Just
Treburland Mine, Altarnun
ARAGONITE
CaC0 3.
T.Hogg (1825) 125.
Levant Mine, St. Just
Greystone Quarry, Lezant
Geevor Mine, St.Just
Trematon Quarry, Saltash
Strangles Beach, Crackington Haven
Mawnan Cliffs, FalmouthPort Isaac and Tintagel Cliffs
Wheal Owles, St Just
Wheal Edward, St Just
Arfvedsonite see potassium magnesioarfvedsonite.
Argentite see Acanthite - most, if not all Cornish natural silver sulphide specimens
are pseudomorphs of acanthite after argentite.
ARGENTOJAROSITE
AgFe3+3(SO4)2(OH)6.
A. W.G.Kingsbury.(1964) Mineral.Mag. 35, li.(1964) RGSC 150th Ann.Vol. 249.
Treore Mine, St Teath
Wheal Ludcott, St Ive
ARSENICAs.
A.S.Cragoe (1924) Mining Mag. 30, 344. (First confirmed record)
Burraton Combe Quarry, St. Stephensby-Saltash BI
Dolcoath Mine, Camborne
Geevor Mine, St.Just
Chiverton Mine, Perranzabuloe
Tolgus New Shaft, Illogan

Botallack Mine, St.Just (Allan's Shaft)
Wheal Cock, St. Just
ARSENIOSIDERITE
Ca3Fe3+4(AsO4)4(OH)6. 3H2O.
A.W.G.Kingsbury and J.Hartley.(1957) Mineral.Mag. 31,499.
Penberthy Croft Mine, St Hilary
Arsenite synonym of arsenolite q.v.
ARSENOLITE
As2O3.
Greg and Lettsom (1858) 369 (arsenite) A.Russell (1925) Mineral.Mag. 20, 299-304.
Wheal Sparnon, Redruth
Burraton Combe Quarry, Saltash BI
Phoenix United Mines, Linkinhorne
Dolcoath Mine, Cambome (Came Collection specimen)
ARSENOPYRITEFeAsS.
W.Phillips (1819) 163-4. (arsenical iron. mispickel)
Botallack Mine, St Just
Wherry Mine, Newlyn
Levant Mine, St.Just
Wheal Providence, Lelant (argentiferous)
Wheal Maudlin, Lanlivery
Dolcoath Mine, Cambome
Holmbush Mine, Callington
Wheal Penrose, Sithney
Hingston Down Quarry, Calstock
Barratt's Zawn, Endellion
Trebarwith Quarry, Tintagel
Gunheath China Clay Pit, St.AustellBlackpool china clay Pit, St.Austell
ARTHURITE
CuFe32+(AsO4,PO4,SO4)2(O,OH)2 .4H2O.
R.J.Davis and M.H.Hey. (1964) Mineral.Mag. 33, 937.
Hingston Down Consols Mine, Calstock TL
Hingston Down Quarry, Calstock
Gunheath China Clay Pit, St.Austell Cligga Head Mine, Perranzabuloe
ASBOLANE(Co,Ni)1-y(Mn 4+O2)2-X(OH)2-2y+2xnH2O.
W.Phillips (1819) 209-10. (Earthy cobalt)
South Terras Mine, St Stephen-in-Brannel
St Austell Consols
Wheal Gorland, Gwennap
Wheal Unity, Gwennap

Roscommon Cliff, St Just
ATACAMITE
Cu 2C1(OH)3.
A.W.G.Kingsbury (1954) TRGSC. 18, part 4 (for 1952), 400-1.
Penberthy Croft Mine, St Hilary
Botallack, St.Just
AUGITE(Ca,Mg,Fe)2SiO6.
J.H.Collins (1871) pt. 2, 84-5. (pyroxene, var. augite.) Botallack
Wheal Cock, St Just
In the Lizard gabbro, eg. Coverack Clicker Tor Quarry, Menheniot Chyandour
St Minver, in "minverite" (Titanaugite)
AURICHALCITE(Zn,Cu)5(CO3)2(OH)6.
A.W.G. Kingsbury.(1954) TRGSC 18, pt.4 (for 1952), 395.
Penberthy Croft Mine, St Hilary
Greystone Quarry, Lezant
AUTUNITE
Ca(UO2)2(PO4)2 .10-12H2O.
W.Gregor(1805) Phil.Trans.R.Soc.Lond. 95, 33-48.
Stenna Gwyn Mine, St Stephen-in-Brannel
South Terras Mine, St Stephen-in-Brannel
Wheal Edward, St Just
Old Gunnislake Mine, CalstockSouth Wheal Basset, Illogan
South Tolcame Mine, Camborne
AXINTTECa2Fe 2+A12BSi4O15(OH).
W.Phillips (1819) 33.
Botallack Mine, St.Just BI
Roscommon Cliff, St Just
Terrace Hill Quarry, LostwithielTreburland Manganese Mine, Altarnun
Bodmin Wheat Betsy, Laniver
Wheal Ding, Lanivet
Trevascus Mine, Gwinear
South Terras Mine, St Stephen-in-Brannel
Axinite - in modern usage a group name, most specimens obtained in Cornwall
were probably Ferroaxinite.
AZURITE
Cu3(CO3)2(OH)2.
W.Phillips (1819) 230-1. (blue copper)
Wheal Gorland, Gwennap

Wheal Unity, Gwennap
Wheal Virgin, Gwennap
Ting Tang Mine, Gwennap
Carharrack Mine, Gwennap
Wheal Basset, Illogan
Phoenix United Mines, Linkinhorne
South Caradon Mine, St Cleer
Old Gunnislake Mine, Calstock
Gunheath China Clay Pit, St.AustellBARBOSALITE
Fe2+Fe 3+2(PO4)2(OH)2.
P.J.Dunn.(1990) AM-Min. 75,1197-9.
Phoenix United Mines (Stowe's Section), Linkinhorne BI as constituent of"andrewsite" q.v.
BARIUM-PHARMACOSIDERITE
BaFe3+8(AsO4)6(OH)8.14H2O
D.R.Peacor and P.J.Dunn (1985) Min.Rec. 16,121-4.
"Cornwall" BI
BARSTOWITE
3PbCI2 .PbCO3.H2O.
C.J.Stanley, G.C.Jones, A.D.Hart, P.Keller, and D.LLoyd (1991) Mineral.Mag.
55, 119.
Bounds Cliff, Endellion TLBARYTEBaSO4.
W.Phillips (1819) 142.
Ale and Cakes Mine, Gwennap
Mount Wellington Mine, Gwennap
Herodsfoot Mine, Lanreath
Wheal Mary Ann, Menheniot
Wheal Trelawny, Menheniot
Restormel Royal Iron Mine, Lanlivery
Wheal Ludcott, St Ive
St Austell Consols
Gravel Hill Mine, Perranzabuloe
Wheal Drea, StJust
Wheal Bassett, Illogan (radian and strontian)
BASSETITE
Fe 2+(UO2)2(PO4)2.8H2O.
A.F. Hallimond (1915) Mineral.Mag. 17,222-30.
Wheal Basset, Illogan TL
South Terras Mine, St Stephen-in-Brannel
BAYLDONITE
Cu3Pb(AsO 4)2(OH)2.
A.H.Church (1865) J.Chem.Soc., 2nd ser., 3, 265.
Cornwall TL
Penberthy Croft Mine, St Hilary (TL?)
Wheal Carpenter, Gwinear
Wheal Gorland, Gwennap
Wheal Alfred, Phillack

BEAVERITE
Pb(Cu,Fe3+,A1)3(SO4)2(OH)6.
A.W.G.Kingsbury.(1953) Mineral.Mag. 30, xliv. (I 954)TRGSC 18, pt.4 (for 1952),
394.
Penberthy Croft Mine, St Hilary
BECQUERELITECa(UO2)6O4(OH)6.8H2O.
P.C. Tandy & J.G. Francis. (Pers. Comm. to C.W.E.H.Smith, Geevor's geologist.
1986-7 BM(NH) X-rd 552 IF 'a mineral near becquerelite'.)Geevor Mine, St.Just
Wheal Edward, St.Just'near becquerelite' BM(NH) X-rd 5507F proved to becompreignacite q.v..
West Wheal Owles, St.Just (Cargodna Lode) reported but not confirmed.
BEMENTITE
Mn 5Si 4O10(OH)6.
A.Russell (1946) Mineral.Mag. 27, 225.Treburland Manganese Mine, Altarnun BI
BERAUNITE
Fe2+Fe 3+5(PO4)4(OH)5.6H2O.
C.Sparrow (1989) Russell Soc. (South West) Newsletter 3, 6. (specimen analysedby BM(NH))
Gravel Hill Mine, Perranzabuloe
Phoenix United Mines, Linkinhorne
Penberthy Croft Mine, St Hilary
BERTHIERTTE
FeSb2S4.
8SLBM BM(NH) identification, R.W.Barstow specimen.
Wheal Prosper, St Ewe BI
Wheal Boys, Endellion
Tresungers Mine, St.Kew
BERTRANDITE
Be 4Si 2O7 (OH)2.
H.L.Bowman (1910) Mineral.Mag. 16, 47-50. (read 1904). Cheesewring Quarry,
Linkinhorne BI
Gold-diggings Quarry, St Cleer
Kit Hill Great Consols, Stokeclimsland
Wheal Metal,
Breage Maen Quarry, Constantine
Hingston Down Quarry, Calstock
Trolvis Quarry, Longdowns
Kessle Quarry, Longdowns
BERYL
Be 3A12Si 6O18.
Anon. (1825) Ann.Phil. ser.2, 10, 383. Greg and Lettsom (1858) 125-6.

St Michael's Mount
Mabe, Constantine
Wheal Castle, St Just
Swit Quarry, Bodmin Moor
New Consols Mine, Luckett
Hawkswood Mine, North Hill
Goonbarrow China Clay Pit, St Austell
Gunheath China Clay Pit, St.Austell
BEUDANTTTE
PbFe3+3(AsO4)(SO4)(OH)6.
A.W.G. Kingsbury (1954) TRGSC. 18, pt.4 (for 1952), 392.
Penberthy Croft Mine, St Hilary
Wheal Gorland, Gwennap
Treore Mine, St Teath Old Treburgett, St Teath
Trewethen Mine, St Kew
Wheal Carpenter, Gwinear
Trevaskus Mine, Gwinear
BIEBERITECoSO4.7H2O.
J.Robson (1949) TRGSC 17, pt.8 (for 1948), 472. (previously mistaken forerythrite.)
Penberthy Croft Mine, St Hilary BI
Wheal Alfred, Phillack BI
BINDIEIMITE
Pb2Sb 2O6(O,OH).
Greg and Lettsom (1858) 373-4. (bleinierite)
Wheal Boys, Endellion
Greystone Quarry, Lezant
New Porth Beach, Falmouth
Pengenna Mine, St Kew
Trevinnick Mine, St Kew
Bodannon Mine, Endellion
Treore Mine, St Teath
Poltreworgey Mine, Endellion
BIOTITE
K(Mg,Fe2+)3(A1,Fe3+)Si3O10(OH,F)2.
P.K.Ghosh (1928) Mineral.Mag. 21,436-439.
Trelavour Down, St Dennis
Gunheath China Clay Pit, St Austell and throughout the Cornish granites
Carn Bosavenn, St Just (lepidomelane)
BIRNESSITE
Na4Mn14O27-9H2O.
B.Young (1988) Mineral.Mag. 52,415-17.
Treburland Manganese Mine, Altarnun BI
Penberthy Croft Mine, St Hilary

Greystone Quarry, Lezant (near birnessite or manjiroite)
BISMUTHBi.
W.Borlase (1758) Nat.Hist.Corn. 129-30.
Mr. Beauchamp's Cobalt Mine, Gwennap (Pengreep) BI
Botallack Mine, St Just
Penlee Quarry, Newlyn
Hingston Down Quarry, Calstock
St Ives Consols
Wheal Herland, Gwinear
Wheal Sparnon, Redruth
Dolcoath Mine, Camborne
Trugo Mine, St Columb
St Austell Consols,
Bismuth ochres
Bi2O3.
T.Hogg (1825) 25. (oxide of bismuth) The name was applied to both oxides andcarbonates of bismuth.
Cost all lost Mine, Roche
Botallack Mine, St Just
Levant Mine, St.Just
Wheal Owles, St Just
Restormel Iron Mine, Lanlivery
Wheal Herland, Gwinear
BISMUTHINTTE
Bi2S3.
W.Phillips (1819) 203-4. (Sulphuret of bismuth)
Botallack Mine, St Just BI
Levant Mine, St.Just
Fowey Consols Mine, Tywardreath
Dolcoath Mine, Camborne
South Crofty Mine, Camborne
Wheal Sparnon, Redruth
Trugo Mine, St Columb
Wheal Herland, Gwinear
Wheal Cock, St Just
Penlee Quarry, Newlyn
BISMUTITE(BiO)2CO3.
J.H.Collins (1871) Pt.2, 1.
Wheal Coates, St Agnes (TL of "agnesite"q.v.)
Wheal Owles, St Just
BISMUTOFERRITE
BiFe3+2(SiO 4)2OH.
A.W.G.Kingsbury (1963) Mineral.Mag. 33, xc.

South Terras Mine, St Stephen-in-Brannel BI
Hingston Down Quarry, Calstock
Bleinierite, synonym of bindheimite q.v..
BOLÉITE
Pb26Ag10Cu24C162(OH) 48.3H2O.
8 SLBM. V.A.D.Holyer specimen,(Tolcarne Beach) National Museum of Wales,
identified 1983. Also identified on BM(NH) specimen (Newporth Beach).
Tolcarne Beach, Newquay BI
New Porth Beach, Falmouth
Padstow Consols,
Porthilley Mine, St.Minver
BORNITE
Cu 5FeS4.
W.Phillips (1819) 222-3. (Buntkupfererz/purple copper)
Carn Brea Mine, Illogan
Dolcoath Mine, Camborne
Tincroft Mine, Illogan
Cook's Kitchen Mine, Illogan
Tresavean Mine, Gwennap
Botallack Mine, St Just
Pennance Consols Mine, Gwennap
Levant Mine, St. Just
St Ives Consols
BOTALLACKITE
Cu2C1(OH)3.
A.H.Church (1865) J.Chem.Soc. ser. 2, 3,212.
A.W.G.Kingsbury (1964)RGSC 150th Annv. 250.
Wheal Cock, St Just TL
Levant Mine, St.Just
Geevor Mine, St.Just
Cligga Mine, Perranzabuloe
Hanover Cove, Perranzabuloe
West Wheal Owles, St Just
Botallack Head, St Just
Padstow Consols Mine
Loe Warren, St.Just
Botryolite, variety of Datolite (q.v.) found in botryoidal form.
BOULANGERITE
Pb5Sb 4S11.
A.W.G.Kingsbury and J.Hartley (1956) Mineral.Mag. 31,297,"Port Gaverne"
Wheal Boys, Endellion BI
Pengenna Mine, St Kew
Old Treburgett, St TeathTrevinnick Mine, St Kew
Tresungers Mine, Endellion
Treore Mine, St Teath
Poltreworgey Mine, Endellion
BOURNONITEPbCuSbS3.
P.Rashleigh (1797) p1.19, p. 34
Wheal Boys, St. Endellion TL
Herodsfoot Mine, Lanreath
New Porth Beach, Falmouth
Credis Mine, Padstow
Treore Mine, St Teath
Pengenna Mine, St Kew
Tresungers Mine, Endellion
Swanpool Mine, Falmouth
BRAUNTTE
Mn2+Mn3+6SiO12.
J.H.Collins (1871) pt.2, 19. 'it is said to have been found in the manganese mines
near Launceston'.
Reported from manganese mines near Launceston
BROCHANTITE
Cu 4SO 4(OH)6.
F.Pisani (1864) Cir.Acad.Sci. Paris. 59, 912-13.
Phoenix United Mines, Linkinhome
Sharptor Mine, Linkinhome
United Mines, Gwennap
Wheal Gorland, Gwennap
Gerrans Bay
Fowey Consols Mine, Tywardreath
Drakewalls Mine, Calstock
Penberthy Croft Mine, St Hilary
Gunheath China Clay Pit, St.Austell
Geevor Mine, St.Just
Levant Mine, St.Just
Bromian Chlorargyrite see Embolite
Bronzite, synonym of Enstatite q.v..
BROOKITE
TiO2.
W.A.Richardson (1923) QJGS 79,547-76. (in the St.Austell granite)
Lanterdan Quarry, Tintagel
Prince of Wales Quarry, Trebarwith
Hingston Down Quarry, CalstockBRUCITE
Mg(OH)2.
M.F.Brooke (1983) Gems vol.15, No.2, 26.
The Lizard
BRUSHITE
CaHPO4.2H2O.
C. Sparrow (1989) Russell Soc. Newsletter S.W. 2, 5.(recorded 1988)
Wheal Cock, St Just
BUSTAMITE(Mn,Ca)SiO3.
A.Russell (1946) Mineral.Mag. 27, 221-35.
Treburland Manganese Mine, Altarnun BI
BUTTGENBACHITE
Cu19C14(NO3)2(OH)32.2H2O.
C. Sparrow. Russell Soc. Field Notes. 1991. (reported BM(NH) X-rd analysis)
Botallack Mine, St Just
BYTOWNITE(NaSi,CaAl)AlSi2O,.
J.S.Flett and J.B.Hill (1946) The Lizard and Meneage Survey, 75. (mineral near
Bytownite)
The Rill, The Lizard

CACOXENITE(Fe3+,A1)25(PO4)17O6(OH)12 -17H2O
7 SLBM. BM(NH) specimens. collected by A.Russell in 1939.
Castle-an-Dinas Mine, St Columb
Phoenix United Mines, Linkinhorne
Greystone Quarry, Lezant
Gunheath China Clay Pit, St Austell
Wheal Jane, Kea (doubtful)
Calamine, synonym of smithsonite q.v..
CALCITE
CaCO3.
W. Phillips (1819) 113.
Levant Mine, St.Just (including manganocalcite)
Botallack Mine, St Just
Wheal Owles, St Just
Wheal Wrey, St Ive
Wheal Mary Ann, Menheniot
Delabole Slate Quarry
Greystone Quarry, Lezant
Port Quin Mine, St.Endellion
Porthoustock Quarry, St Keverne
Dean Quarry, St Keverne
Herodsfoot Mine, Lanreath
CALEDONITE
Cu2Pb5(SO4)3CO3(OH)6.
A.W.G. Kingsbury.(1954) TRGSC. 18, pt.4 (for 1952), 395.
Penberthy Croft Mine, St Hilary
Greystone Quarry, Lezant
Campylite, variety of mimetite (q.v.) named for its crystal shape.
CANCRINITENa6Ca2A16Si6O24(CO3)2.
R.K.Harrison, N.J.Snelling,R.J.Merriman, G.E.Morgan, and A.J.J,Goode (1977)
Geol.Mag. 114,249-64.
Wolf Rock BI
CARBONATE-FLUORAPATITE(Francolite)
Ca5(PO4,CO3)3F.
Greg and Lettsom (1858) 76-8, 473. (apatite, var. francolite)
R.S.W. Braithwaite and B.V.Cooper (1982) Mineral.Mag. 46, 119-26.
Fowey Consols Mine, Tywardreath
Holmbush Mine, Stokeclimsland (incl. "tavistockite" form)
Cargoll Mine, Newlyn
East Levant Mine, St.Just Gunnislake
Clitters Mine, CalstockOld Gunnislake Mine, Calstock
East Gunnislake Mine, Calstock
Crinnis Mine, St Austell
Wheal Maudlin, Lanlivery
Wheal Cock, St.Just
Wheal Edward, St.Just
CARMINITE
PbFe2+(AsO4)2(OH)2.
A. Russell. (1910) Mineral.Mag. 15, 285-7.
Hingston Down Consols, Calstock BI
Penberthy Croft Mine, St Hilary
Wheal Carpenter, Gwinear
Wheal Gorland, Gwennap
Treore Mine, St Teath Old Treburgett, St Teath
Pengenna Mine, St Kew
Gravel Hill Mine, Perranzabuloe
CARNOTITE
K2(UO2)2(VO4)2. 3H2O.
C.Gramaccioli.(1955) Natura (Milano), 46, 30-2. (data insufficient to identify as
carnotite)
South Terras Mine, St Stephen-in-Brannel BI
CARPHOLITE
MnAl2Si2O6(OH)4.
A.W.G.Kingsbury and J.Hartley (1957) Mineral.Mag. 31, 502.
Kit Hill Consols, Stokeclimsland
Hingston Down Consols, Calstock
Stenna Gwynn Mine, St Stephen-in-Brannel
CASSITERITE
SnO2.
W.Phillips (1814) Trans.Geol.Soc.Lond. 2, 336-76, P1.15-26. (235 line drawings ofcassiterite from Cornwall.)
J.H.Collins (1882-4) Cornish Tin Stones and Tin Capels.
Botallack Mine, St Just
Wheal Providence, St Ives
St Ives Consols
Great Wheal Vor, Breage
Wherry Mine, Newlyn
Dolcoath Mine, Camborne
Relistian Mine, Gwinear
Trevaunance Mine, St Agnes
Old Beam Mine, Bugle
Drakewalls Mine, Calstock
CASSITERITE, "Sparable tin" J.H.Collins (1882-4) Cornish Tin Stones and Tin
Capels.
Dolcoath Mine, Camborne

Pednandrea Mine, Redruth
Wheal Owles, St Just
Phoenix United Mines, Linkinhorne
Wheal Gorland, Gwennap
Wherry Mine, Newlyn
Ventonwyn, St Stephen-in-Brannel
St Ives Consols
Hanover Cove, Perranzabuloe
Egloshellen Mine, St Stephen-in-Brannel
CASSITERITE, "wood" & "toads-eye" tin
K.F.G.Hosking, C.J.Stanley and G.S.Camm (1987) TRGSC 21, 153-212.
Stream Works of Cornwall Garth Mine, Sancreed
Bojewan placers, Sancreed
Geevor Mine, St. Just
Great Wheal Vor, Breage
Wheal Metal, Breage West
Wheal Kitty, St Agnes
Wheal Coates, St Agnes
Rostowrack China Clay Pit, St Austell
Redmoor placers, Lanlivery
Gunheath China Clay Pit,
St.Austell Melbur China Clay Pit, St.Austell
CASSITERITE, others"Quilted tin"
Seal Hole Mine, St Agnes (Rashleigh collection)"Sealing-wax tin"
Rosehill Mine, St Ives
"Dog-tooth tin"
Garth Mine, Sancreed"Ruby tin"West Wheal Kitty, St Agnes.
Wheal Pendarves, Camborne"Bird's Eve tin"
Redmoor placers, Lanlivery"Dough tin"
Nancegollan Mine, Crowan
Pseudomorph after orthoclase Wh. Coates, St Agnes.
Balleswidden Mine, St Just
CELESTINESrSO4.
J.Garby (1848) TRGSC 7, 81. Binner Downs Mine, Helston
CERULĖITE
Cu2A17(AsO 4)4(OH)13.1 I .5H2O.
A.Russell and G.F.Claringbull (1955) Min.Soc. Notice, No.90; Min.Abstr. 13, 30.
Wheal Gorland, Gwennap BI
Wheal Maid, Gwennap

Penberthy Croft Mine, St Hilary
CERUSSITE
PbCO 3.
W.Phillips (1819) 253-5. (acicular carbonate of lead).
Pentire Glaze Mine, St Minver
Wheal Rose, Sithney
Wheal Penrose, Sithney
Wheal Rose, Newlyn
Wheal Mary Ann, Menheniot
Port Quin Beach, St.Endellion
Greystone Quarry, Lezant
Trevinnick Mine, St Kew
Wheal Confidence, Newquay
Polzeath Consols, St.Minver
Penberthy Croft Mine, St.Hilary
CHABAZITECaA12SiO4.6H2O.
A.Russell (1910) Mineral.Mag. 15, 380-81. (read 12th Nov. 1907.) Specimens
collected 1892-93.
Colcerrow Quarry, Luxulyan
Dean Quarry, St Keveme (incl. variety phacolite)
CHALCANTHITECuSO4.5H2O.
W.Phillips (1823) 313.(sulphate of copper)
Geevor Mine, St. Just
Wheal Owles, St Just
Ting-Tang Mine, Gwennap
Wheal Jane, Kea
Botallack Mine, St Just
St Ives Consols, St.Ives
Phoenix United Mines, Linkinhorne
CHALCOALUNUTE
CuAl4(SO4)(OH)12.3H20.
8SLBM BM(NH) identification, 1985, D.Clough specimen.
Penberthy Croft Mine, St Hilary
CHALCOCITE
Cu2S.
J.Sowerby (1817) Brit.Mineralogy vol.5, tab. dxvlll (nail head).
Wheal Crenver, Crowan
Wheal Abraham, Crowan
Tresavean Mine, Gwennap
Levant Mine, St. Just
Geevor Mine, St.Just
Botallack Mine, St Just
Cook's Kitchen Mine, Illogan
Dolcoath Mine, Camborne

Spearn Moor Mine, St Just
Cam Brea Mine, Illogan
CHALCOMENITE
CuSeO 3.2H2O.
Russell Society Newsletter (SWX 1989) No.2, C. Sparrow. Russell Soc. Field Note.
1991. Identified by BM(NH) X-rd diffraction 1987. C.Scheding spec.
Botallack Mine (Wheal Hen section), St.Just
CHALCOPHYLLITE
Cu r 8A12(AsO4)3(SO4)3(OH)27.33H2O.
W.Phillips (1819) 236-7. (hexahedral arsenate of copper known only from
Cornwall)
Wheal Gorland, Gwennap
Wheal Muttrell, Gwennap
Wheal Unity, Gwennap
Ting-Tang Mine, Gwennap
Old Gunnislake Mine,
Calstock West Caradon Mine, St Cleer
Mulberry Mine, Lanivet
Penberthy Croft, St Hilary
Wheal Hazard, St.Just
Hingston Down Consols, CalstockSouth Wheal Basset, Illogan
CHALCOPYRITECuFeS2.
M.H.Klaproth (1787) 27.
East Pool Mine, Illogan
Carn Brea Mine, Illogan
Dolcoath Mine, Camborne
Tincroft Mine, Illogan
Wheal Buller, Redruth
Wheal Towan, St Agnes
Levant Mine, St. Just
Geevor Mine, St.Just
Herodsfoot Mine, Lanreath
CHALCOPYRITE
var. Blister Copper
J.H. Collins (1871) pt.2, 28.
North Roskear Mine, Camborne
Tincroft Mine, Illogan
Wheal Basset, Illogan
Cook's Kitchen Mine, Illogan
Dolcoath Mine, Cambome
Levant Mine, St.Just
Geevor Mine, St. Just
Boscaswell Downs Mine, St Just
Phoenix United Mines,
Linkinhorne South Crofty Mine, Illogan

CHALCOSIDERITE
CuFe+36(PO4)4(OH)8 .41-10.
N. S.Maskelyne (1875) J.Chem. Soc. 28, 586-91.
Phoenix United Mines, Linkinhorne (Stowe's section) BI
Gunheath China Clay Pit, St Austell
CHAMOSITE(Fee+,Mg,Fe3+)5A1(Si3A1)Olo(OH,O)s
G.Tschermak (1891) Sitzungsber. Akad. Wiss. Wien. 100, Abt. 1, 38. (Daphnite)
Penzance, Cornwall (TL of Daphnite - magnesian chamosite.)
Geevor Mine, St.Just (Thuringite - ferrian chamosite)
Phoenix United Mines, Linkinhorne
CHENEVIXITECu2Fe3+2(AsO 4)2(OH)4.H20.
Monsieur Adam and F.Pisani (1866) C.R.Acad.Sci.Paris. 62, 690. Cornwall TL
Wheal Gorland, Gwennap (probable TL)
Wheal Unity, Gwennap
Phoenix United Mines, Linkinhorne
Old Gunnislake Mine, Calstock
Chiastolite, variety of andalusite (q.v.) containing carbonaceous inclusions which
impart a cross like pattern on sectioned crystals.
CHILDRENITE(Fe,Mn)Al(PO4)(OH)2 .H 2O.
H.J.Brooke (1823) Q.J.Lit.Sci.Arts, 16, 275.
Crinnis Mine, St Austell
Drakewalls Mine, Calstock
Prince of Wales Mine, Calstock
Redmoor Mine, Kelly Bray
Okeltor Mine, Calstock
Lady Ashburton Mine, Callington
Chloanthite arsenic deficient variety of nickel - skutterudite, see skutterudite.
CHLORARGYRITEAgCl.
J.Sowerby (1809) Brit.Mineralogy vol.3, tab. ccxliv
Wheal Mexico, Perranzabuloe BI
Wheal Herland, Gwinear
Wheal Alfred, Phillack
Wheal Duchy, Calstock
Wheal St Vincent, Calstock
Wheal Mexico, Calstock
North Dolcoath Mine, Camborne, (South Entral Lode)
Dolcoath Mine, Camborne, (Bromian, see embolite.)
Perran Silver Mine, Perranuthnoe, (Bromian, see embolite.)
Botallack Mine, St Just

Levant Mine, St Just
Chloropal, synonym of nontronte q.v.
CHONDRODITE(Mg,Fe2+)5(SiO 4)2(F,OH)2.
J.H.Collins (1871) pt.2, 32-3. (it is said to have been found)
Wheal Druid, Redruth
Chrome diopside, a chromian variety of diopside (q.v.).
CHROMITE
Fe e+Cr2O4.
J.H.Collins (1871) pt.2, 33.
Kennack Sands and elsewhere in the Lizard Serpentine
CHRYSOCOLLA(Cu,Al)2H2Si 2O5(OH)4 .nH2O.
W. Phillips (1819) 232-3.
Wheal Edward, St Just
Wheal Gorland, Gwennap
Wheal Unity, Gwennap
Ting-Tang Mine, Gwennap
Ghostcroft Mine, Mullion
Craddock Moor Mine, St Cleer
Phoenix United Mines, Linkinhorne
Sharptor Mine, Linkinhorne
Old Gunnislake Mine, Calstock
CHRYSOTILE
Mg3Si2O5(OH)4
V.A.D.Holyer (1972) The Lizard 4, 4.
Pentreath Beach, The Lizard
Gwendreath Quarry, Kennack, The Lizard
Countybridge Quarry, The Lizard
Churchite, see Churchite-Y.
CHURCHITE-Y
YPO4.2H2O.
G.F.Claringbull and M.H.Hey (1953) Mineral.Mag. 30,211-17. (proved churchite to
be a yttrium phosphate)
Cornwall TL
Tretoil Mine, Lanivet (probable TL)
Wheal Pendarves, Camborne
CLAUDETITE
As2O3
C.Hintze (1904) Handb.Mineral. 1(2), 1229, 1233. (no data given, requires
confirmation).

Wheal Sparnon,Redruth BI
CLINOCHLORE
Mg,Fe)5A1(Si3A1)Ol0(OH)8.
J.H.Collins (1871) pt.2, 31. (Chlorite/Prochlorite)
The Lizard District
Penlee Quarry, Newlyn
Wheal Jane, Kea (ripidolite)
CLINOCLASE
Cu3(AsO4)(OH)3.
W.Phillips (1823) 318. (Oblique prismatic arsenate)
Wheat Gorland, Gwennap TL
Wheal Unity, Gwennap
Ting Tang Mine, Gwennap
Wheal Muttrell, Gwennap
Providence Mine, Lelant
Wheal Hazard, St.Just
CLINOZOISITE
Ca2A13S13O12(OH).
J.Robson (1948) TRGSC 17, 468.
Camelford, in epidiorite
COBALTIE
CoAsS.
Greg and Lettsom (1858) 302-3 (first noticed in this country by Rashleigh, spec. in
Greg's collection)
Wherry Mine, Newlyn BI
Wheal Cock, St Just
Botallack Mine, St Just
COERULEOLACTITE(CaCu)A16(PO4)4(OH)8.4-5H2O.
W.L. Roberts, T.J. Campbell & G.R. Rapp. (1990) Ency. of Mins. 2ndEd., 185.Named 1871, thought to be identical with turquoise beforel958.
Phoenix United Mines, Linkinhorne BI
COFFINITEU(SiO4)1-x(OH)4x .
K.Taylor and R.K.Harrison (1958) Nature 181, 363.
Roskrow United Mine, Ponsanooth BI
Geevor Mine, St Just
South Terras Mine, St Stephen-inBrannel
COMPREIGNACITEK2(UO2)O6.8H2O.
N.J.Elton, J.J.Hooper and G.Ryback. (1994) Mineral.Mag. 58, 339 - 41.
Wheal Owles, St.Just
Condurrite, a mixture of domeykite or 13 - domeykite with cuprite or melaconte.

CONICHALCTTE
CaCuAsO4OH
Pers. comm. J.Fuller BM(NH) 30/8/79 to P.Golley.
Wheal Kendall, St Hilary (R.W.Barstow spec:)
Hingston Down Quarry, Calstock
CONNELLITE
Cu19Cl4SO4(OH)32.3H2O.
A. Connell (1847) Proc.Roy.Soc.Edinburgh 2,146.(Sulphato-chloride of copper)
Cornwall TL
Wheal Gorland, Gwennap (probable TL)
Wheal Providence (Rashleigh 1802 Vol.2)
South Tolcarne Mine, Cambome
Geevor Mine, St Just
Levant Mine, St Just
Wheal Hen, St Just
Wheal Edward, St Just
Botallack Mine, St Just
Wheal Unity, Gwennap
Marke Valley Mine, Linkinhorne
Old Gunnislake Mine, Calstock
Gunheath China Clay Pit, St.Austell
Penberthy Croft Mine, St.Hilary
COPIAPITE
Fe2+Fe 3+4(SO4)6(OH)2.20H2OM.
F.Brooke (1984) Gems and Mineral Realm, 16, No.2, 29-31. (member of thecopiapite group of unknown composition)
Mount Wellington Mine, Gwennap
COPPERCu.
F.Hitchen and S.Drew (1824) Hist.Cornwall 2, 503. (found by chance about 1720.)
Ghostcroft Mine, Mullion
Botallack Mine, St Just
Levant Mine, St Just
Wheal Gorland, Gwennap
Wheal Unity, Gwennap
Tresavean Mine, Gwennap
Crinnis Mine, St Austell
Fowey Consols, Tywardreath
Phoenix United Mine, Linkinhorne
Geevor Mine, St Just
Wheal Cock, St.Just
Gunheath China Clay Pit, St.Austell
CORDIERITE(Mg,Fe)2A14Si 5O18.
C.E.Tilley and J.S.Flett (1930) summary of Progress, Geol.Surv. of Great Britain 2440.

Kenidjack, St.Just
Botallack Head, St Just
St Michael's Mount, Marazion
Porthcurno,
Lizard Praa Elvan, (altered to pinite')
Tresayes Quarry, Roche, (altered to pinite')
CORKITE
PbFe3+3PO 4SO 4(OH)6.
G.S.Camm and M.Merry (1991) UKJMM 9, 11.
Penberthy Croft Mine, St Hilary
Gravel Hill Mine, Perranzabuloe
Wheal Unity, Gwennap
CORNUBITE
Cu5(AsO4)2(OH)4.
G.F.Claringbull, M.H.Hey, and R.J.Davies. (1959) Mineral.Mag.32, 1-5.
Wheal Carpenter, Gwinear TL
Wheal Gorland, Gwennap
Wheal Muttrell, Gwennap
Phoenix United Mines, Linkinhome
Penberthy Croft Mine, St Hilary
Wheal Cock, St.Just (Skip Shaft)
East Gunnislake Mine, Calstock
Botallack Mine, St.Just
CORNWALLITE
Cu 5(AsO 4)2(OH) 4.
F.X.M.Zippe (1846) Abhandl.bOhm.Ges.Wiss., 5th ser., 4, 649.
Cornwall TL
Wheal Gorland, Gwennap
Wheal Unity, Gwennap
Wheal Carpenter, Gwinear
Penberthy Croft Mine, St Hilary
Phoenix United Mines, Linkinhorne
Wheal Cock, St.Just (Skip Shaft)
East Gunnislake Mine, Calstock
Botallack Mine, St.Just
CORUNDUM
A12O3.
C.Reid and J.S.Flett (1907) The Geology of the Land's End District. 25.
Gunheath China Clay Pit, St Austell
Kenidjack, St Just
Knill Quarry, St Ives
Carbis Bay sands. (Sapphire)COTUNNITE
PbC12.
A.Russell (1920) Mineral.Mag. 19, 64.
Falmouth Harbour (wreck of the fireship 'Firebrand) BI
COVELLITE
CuS.
Greg and Lettsom (1858) 332-3.
Cam Brea Mine, Illogan
Mulberry Mine, Lanivet
Geevor Mine, St Just
Phoenix United Mines, Linkinhorne
Wheal Kine, St Agnes
Wheal Maudlin, Lanlivery
Mount Wellington Mine, Gwennap
Gunheath China Clay Pit, St.Austell
Penberthy Croft Mine, St.Hilary
CRANDALLITE
CaA13(PO4)2(OH)5.H 2O.
(1988) 'Mineral News' UKJMM. 5, 10. No author. (Camborne School of Mines sem
photograph, specimen and photograph in the RIC collection, Truro.)
Wheal Jane, Kea
CRISTOBALIE
SiO2.
M. Grigg. (Pers. Comm. 1992 C. V. Smale spec.)
Melbur China Clay Pit, St. Austell
Crandallite / Goyazite intermediate, see Goyazite.
CROCOITE
PbCrO4.
D.Lloyd specimen, analysed by P.Tandy BM(NH) 1989.
M. Rothwell & J. Mason. U.K. Journal Mines & Minerals. 11, 32. 1992. R.S.
Newsletter (SW) No. 3, 7.
Greystone Quarry, Lezant
CRONSTEDTITE
Fee+2Fe 3+(SiFe3+)O5(OH)4.
Anon., (1824) Edinb.J.Sci. 1, 380.(Cronstedtite from Wheal Maudlin, Cornwall, inthe cabinet of Mr.Allan. ) T.Hogg (1825) 60.
Wheal Maudlin, Lanlivery
Wheal Jane, Kea
Penlee Quarry, Newlyn
CRONSTEDTITE Polytypes E.H.Nickel and M.C.Nichols 1991
CRONSTEDTITE 1M Wheal Jane, Kea TL
CRONSTEDTITE 2H Wheal Maudlin, Lanlivery TL
CRONSTEDTITE 2M Wheal Maudlin, Lanlivery TL

CRONSTEDTITE 6R Wheal Maudlin, Lanlivery TL
CUBANITE
CuFe2S2.
J.C.Brown (1934) Neues.Jahrb.Min.Abt.A., Beil.-Bd. 68, 321. Min.Abst. 6,228.
East Pool Mine, Illogan BI
CUMENGÉITE
Pb4Cu4C18(OH)8.H2O.
A. C. Dean (1982) J. Russell Soc. 1,No.1, 40-41.
Newporth Beach, Falmouth BI
Tolcarne Beach, Newquay
Great Western Beach, Newquay
Watergate Bay, Newquay
Padstow Consols
Porthilly Mine, St.Minver
CUMMINGTONITE((Mg,Fe2+,Mn)7Si eO22(OH)2.
C.E.Tilley and J.S.Flett (1930) Summ.Progr.Geol.Surv. for 1929,2441.
Kenidjack, St.Just
Botallack, St.Just (in dolerite hornfels)
CUPRITE
Cu2O.
W.Phillips (1811) Trans.Geol.Soc.Lond. 1, 23-37. + figs.
Phoenix United Mines, Linkinhorne
Wheal Unity, Gwennap
Wheal Gorland, Gwennap
Fowey Consols, Tywardreath
Old Gunnislake Mine, Calstock
Dolcoath Mine, Camborne
Wheal Buller, Redruth
Wheal Basset, IIlogan South
Wheal Francis, Illogan
South Caradon Mine, St Cleer
CUPRITE var. ChalcotrichiteSouth Wheal Francis, Illogan
West Wheal Bassett, Illogan
Unity, Gwennap
Wheal Gorland, Gwennap
Ting-Tang Mine, Gwennap
Wheal Pendarves, Camborne
Phoenix United Mine, Linkinhorne
Fowey Consols, Tywardreath
Old Gunnislake Mine,
Calstock Penberthy Croft Mine, St Hilary
Gunheath China Clay Pit, St.AustellHingston Down Quarry, CalstockCUPROSKLODOWSKITE
Cu(UO 2)2(SiO3OH)2.6H2O.
8SLBM D. Hudson specimen, BM(NH) identification.
West Wheal Owles, St Just BI
Geevor Mine, St.Just (No. 17 Level, Peeth lode)
CUPROTUNGSTITECu2WO 4(OH)2.
8SLBM BM(NH) specimen, collected by A.W.G.Kingsbury in 1955.
Wheal Gorland, Gwennap BI
Old Gunnislake Mine, Calstock
Gunheath China Clay Pit, St.Austell
CYANOTRICHITECu 4AI2SO 4(OH)12 .2H2O.
A.W.G.Kingsbury (1952, publ. 1954) TRGSC 18, 393.
Wheal Gorland, St Day BI
Phoenix United Mine (Stowe's Section), Linkinhome
Basset Mine, Redruth
Mulberry Mine, Lanivet
East Pool Mine, Illogan
Wheal Hazard, St.Just
Tresavean Mine, Gwennap
CYRILOVITE
NaFe3+3(PO 4)2(OH)4.2H2O.
F.Ince (1986) J.Russell Soc. 1, No.4, 127-8.
Gunheath China Clay Pit, St Austell BI

DANALITE
Fe2+4Be3(SiO 4)3S.
H.A.Miers and G.T.Prior (1892) Mineral.Mag. 10, 10.
"Redruth" BI
New Tolgus Mine, Redruth
Levant Mine, St Just
Tretoil Mine, Lanivet
Wheal Maudlin, Lanlivery
Wheal Clinton, Falmouth
Botallack Head, St JustDANBURITE
CaBe3(SiO4)2.
4SLBM A.W.G.Kingsbury specimen, collected 1951-2 BM(NH) spec.
Cheesewring Quarry, Linkinhorne BI
Daphnite, a magnesian chamosite, up to Mg: (Fe2+Mg) = 0.2 and Si = 2.5 - 2.8. See
chamosite.
DATOLITE
CaBSiO4OH.
W.F.P.McLintock (1910) Mineral.Mag. 15,407-14.
Parc Bean Cove, Mullion (includes var. botryolite)
Clicker Tor Quarry, Menheniot
DELAFOSSITE
Cu+Fe3+O 2.
D.S,.Buist, A.M.M.Gadalla and J.White (1966) Mineral.Mag. 35, 731-41.
Cornwall BI
Tolvadden Mine, Marazion
DESCLOIZITE
Pb(Zn,Cu)VO4OH.
N.Carruth specimen, X-rd S.Weiss (Munich) 1993.
Greystone Quarry, Lezant
DEVLLLINE
CaCu4(SO4)2(OH)6.3H2O.
F.Pisani (1864) C.r.Acad.Sci.Paris 59, 813.
Cornwall TL
Penberthy Croft Mine, St Hilary
Wheal Providence, Gwinear
Wheal Tremayne, Gwinear
Ennis Wheal Virgin, St Hilary
Fowey Consols, Tywardreath
Geevor Mine, St Just
Perran Great St George Mine, Perranzabuloe
Wheal Hazard, St.Just

DIABOLÉITE
Pb2CuCI2(OH)4
M.Merry specimen, collected 1994. identification reported by R.S.W.Braithwaite,
UMIST. Padstow Consols, Padstow
DIADOCHTTE
Fe 3+2PO 4SO 4OH.5H2O.
C.Sparrow (1989 ) R.S. Newsletter (SW) No.3
Gravel Hill Mine, Perranzabuloe Diallogite, synonym of rhodochrosite q.v..
DIASPOREAlO(OH).
C.E.Tilley and J.S.Flett (1929) Summ.Prog.Geol.Surv.GB pt.2, 28.
Kenidjack Castle, St.Just
DICKITE
A12Si 2O5(OH)4.
A.Russell (1948) Int.Geol.Cong. Guide A.4, 8.
Trenute/Trebullett Antimony Mines, Lezant
Dizzard Mine, Poundstock
Wheal Leigh, Pillaton
Tredinnick Mine, St Erney
Millook Beach, St Gennys
DIGENITE
Cu 18S.
W.R.Cook (1972) Min.Rec. 3, 15.
Cornwall BI
Botallack Mine, St Just
Wheal Hen, St Just
Gunheath China Clay Pit, St.Austell
DIOPSIDE
MgCaSi2O6.
J.J.H.Teall (1888) Mineral.Mag. 8, 118-9. (malacolite)
Mineral Mag 27, 1946 (Russell)
Treburland Mn. Mine, Altarnun
Spernic Cove, Gwenter (malacolite in granulitic gabbro)
Bodmin Wheal Betsy, Lanivet, (variety Sahlite, Serjeant collection)
Coverack, The Lizard (Chrome diopside)
DJURLEITE
near Cu1.9S.
W.R.Cook (1972) Min.Rec. 3, 15.
Cornwall BI
Wheal Owles, St Just
Dean Quarry, St Keverne

DOLOMITE
CaMg(CO3)2.
W.Phillips (1819) 127. (pearl spar)
Botallack Mine, St Just
Geevor Mine, St Just
Trevascus Mine, Gwinear
North Roskear Mine, Camborne
West Chiverton Mine, Perranzabuloe
Greystone Quarry, Lezant
Eastern Cliff, The Lizard
Carleon Cove, The Lizard
Pentreath Beach, The Lizard
South Crofty Mine, Illogan (mangandolomite q.v.)
DOMEYKITE α and β
Cu 3As.
(constituents of 'condurrrite' q.v.) Greg and Lettsom (1858) 328-9. P.G.Embrey(1958) Mineral.Mag. 31, 979-80
Condurrow Mine, Camborne
Wheal Druid, Redruth
DRAVITE
NaMg3A16(BO3)3Sr6O18(OH)4.
S.O.Agrell (1941) Mineral Mag. 26, 81-93.
Dines Head, Padstow
Gunheath China Clay Pit, St.Austell
DUFRENITE
Fe2+Fe 3+4(PO4)3(OH)5.2H2O.
E.Kinch and F.H.Butler (1886) Mineral.Mag. 7, 65.
Phoenix United Mines (Stowe's section) BI
Gunheath China Clay Pit, St.Austell
DUFRENOYSITE
Pb2As2S5
G.Ryback (1994) J.Russell Soc., 5, 2, 71. R.D.S.Shrimpton spec. collected 1938;
X-rd by Dr. Nelson. Tiny needles in a vugh'
Wheal Boys, St. Endellion. BI
DUFTITE
PbCuAsO4OH.
G.S.Camm and M.Merry (1991) UKJMM 9, 13.
Penberthy Croft Mine, St Hilary
DUMORTIERITE(Al,Fe)7BO3(SiO4)3O3.
A.W.Groves (1928) Mineral.Mag. 21,
In the St.Austell granites

DUNDASITE
PbA12(CO3)2(OH)4.H2O.
A.Russell (1944) Mineral.Mag. 27, 7-8.
Wheal Rose, Sithney
Wheal Penrose, Sithney
Trevinnick Mine, St Kew
Greystone Quarry, Lezant
Port Quin Mine, Endellion
Padstow Consols,
Pengenna Mine, St Kew
Duporthite
Aluminosilicate of Mg and Fe2+J. H.Collins (1877) Mineral Mag. 1, 226.
Hey 3. An asbestiform mineral requiring re-examination.
Duporth, St.Austell TL
DURANGITE
NaAlAsO4F.
4SLBM BM(NH) spec. collected 1958 by A. W.G.Kingsbury.
Cheesewring Quarry, Linkinhorne BI
DYSCRASITEAg3Sb.
Included in John Purser (1974) manuscript, RIC library, Truro. Dolcoath
Mine, Camborne

EMBOLITE
Ag(C1,Br).
G.T.Prior and L.J.Spencer (1902) Mineral.Mag. 13,177. H.G.Macpherson (1983)
Mineral.Mag. 47, 249. (analysis given indicates this to be bromian chlorargyrite)
Dolcoath Mine, Camborne
Perran Silver Mine, Perranuthnoe
ENARGITE
Cu3AsS4.
C.Scheding spec. confirmed BM(NH) 1989.
South Crofty Mine, Illogan (415fm level)
ENSTATITE
Mg2Si 2O6.
J.Garby (1848) TRGSC 7, 72-79. (bronzite)
In the Lizard serpentinite Dean Quarry, St Keverne
EnysiteNear Cu2A16SO 4(OH)20.
J.H.Collins (1876) Mineral Mag. 1, 14. P.Groth (1877) Zeits.Kryst.Min. 1, 75.
Probably a mixture.
Trevaunance Cave, St.Agnes TL
EPIDOTE
Ca2(A1,Fe3+)3(SiO4)3(OH).
W.Phillips (1819) 34.
Crown's Rock, Botallack
South Tresavean Mine, Gwennap
Landewednack, The Lizard
Porthkerris Quarry, The Lizard
Pen Olver, Lizard
Tuckingmill, Camborne
Tolpetherwin Quarry, South Petherwin
The Crowns, Botallack (BI var. Stannian)
EPSOMITE
MgSO4.7H2O.
J.Robson (1949) TRGSC 17,472.
Dolcoath Mine, Camborne
ERYTHRITE
Co3(AsO 4)2.8H2O.
W.Phillips (1817) 210.
Botallack Mine, St Just
Wherry Mine, Newlyn
Dolcoath Mine, Camborne
East Pool Mine, Illogan
Wheal Sparnon, Redruth
Polgooth Mine, St AustellSouth Terras Mine, St Stephen-in-Brannel

Penberthy Croft Mine, St Hilary
Ennys Wheal Virgin, St Hilary
St Austell Consols
Pentireglaze Mine, St.Minver
Roscommon Cliff, St.Just
Cligga Mine, Perranzabuloe
ETTRINGITE
Ca6A12(SO4)3(OH)12.26H2O.
P. Wallace (1992) Russell Soc. (S.W.) Newsletter 9, 8.
Tresavean Mine, Gwennap
EUCLASEBeA1SiO4OH.
A.W.G.Kingsbury (1958) Mineral.Mag. 31,815-7.
Cligga Head BI
EULYTINE
Bi4(SiO4)3'J.H.Collins (1881) Cat.Min.Mus.RIC., Div. 2-Met. spec. No.s 1588 and
1589. H.G.Macpherson (1983) Mineral.Mag. 47,249, Macpherson
quotes pers. comm. from P.G.Embrey that neither of these specimens
contain eulytine.
Restormel Mine, Lanlivery
Wheal Coates, St. Agnes

Falilore, synonym of tetrahedrite q.v..
FAUSTITE(Zn,Cu)A16(PO4)4(OH) 8.4H2O.
W.L.Roberts, T.J.Campbell and G.R.Rapp (1990) Enc.Mins. 2nd ed. 267-8.
Phoenix United Mines, Linkinhorne BI
FERBERITE
Fe2+WO4.
H.G.Dines (1956) Met.Min.Reg.S.W.England 607.
Penhale Mine, St Cleer
Wheal Arthur and Wheal Edward, Calstock
Calstock Consols, Calstock
North Herodsfoot Mine, Lanreath
Guiheath China Clay Pit, St.AustellHingston Downs Quarry, Calstock
See also Wolframite.
Ferrian turquoise see Turquoise.
FERRIMOLYBDITE
Fe,(MoO4)3.7H,O.
A.W.G.Kingsbury specimens P.Tandy pers.conun.,30/4/1993 to P.Golley.
Kit Hill Consols, Stokeclimsland
Hingston Down Quarry, Calstock
FERRITUNGSTITE(W,Fe3+)(O,OH)3.
B.Gamble spec. X-rd BM(NH) R.F.Symes1993.
Hingston Downs Quarry, Calstock BI
FERRO-HORNBLENDE
Ca,Fe 2+4AlSisO 2 2 (OH) 2.
J.Garby (1848) TRGSC 7, 77.
Botallack, St.Just
FERROAXINITE - see axinite Most Cornish axinites are probably ferroaxinite
Ferroberaunite
C.Sparrow (1989) Russell Society South-West Branch Newsletter. 3, 6.
(Analysed by S.Weiss, Munich University, not yet accepted as a species.)
Gravel Hill Mine, Perranzabuloe
FERROCOLUMBITE
Fez+Nb2O6.
I.P.Hodkinson and A.M.Clark (1977) Mineral.Mag. 41, 131-2.
Gunlieath China Clay Pit, St.Austell BI

FERROKESTERITE
Cu2(Fe,Zn)SnS4.
S.A.Kissin and D.R.Owens (1989) Can.Min. 27, 673-88.
Cligga Mine, Perranzabuloe. TL
FERROSTRUNZITE
Fe2+Fe3+2(PO4),.6H,O.
S.Weiss, (1989) Lapis 14, No. 6, 40-1.
Gravel Hill Mine, Perranzabuloe BI
Florencite (type ?)(La,Ce,Th,Sc,Ca) A13 (PO4)2(OH)6N. J.Elton EDX and XRD of M.Grigg specimen.Russell Society SW Branch Field
Notes 1995.
Gunheath China Clay Pit, St.Austell
FLUELLITE
Al2PO4F2(OH).7H2O.
J.Sowerby (1808) Brit.Min. 3, 85-86. p1.243. (discovered about 1806 by the Rev.
William Gregor, vicar of Creed). Incorrectly attributed to A.Levy (1824) Aim.Phil.,
2nd ser., 8, 243.)
Stenna Gwynn Mine, St Stephen-in-Brannel TL
Goonvean China Clay Pit, St Austell
FLUORAPATITE
Ca5(PO4)3F.
W.Phillips (1819) 128-9. (apatite, phosphate of lime)
Botallack Mine, St Just
Gravel Hill Mine, Perranzabuloe
Gunheath China Clay Pit, St.Austell
Goonbarrow China Clay Pit, St.Austell
Old Gunnislake Mine, Calstock
St Michael's Mount, Marazion
Tremearne Pegmatite, Breage
Halvosso Quarry, Longdowns
Stenna Gwyn Mine, St Stephen-in-Brannel
Colcerrow Quarry, Luxulyan
Tregargus Quarry, St Stephen-in-Brannel
Megilligar Rocks, Porthleven (Manganapaite)
Trelavour Downs, St Dennis (Manganapatite)
Trolvis Quarry, Longdowns
Kessle Quarry, Longdowns
FLUORITE
CaF2.
W.Phillips (1819) 129-32. (fluor)
South Crofty Mine, Illogan
East Pool, Illogan
Wheal Jane, Kea
Pednandrea Mine, Redruth

Carn Brea Mine, Illogan
South Crofty Mine, Illogan
Wheal Gorland, Gwennap
Wheal Unity, Gwennap
Wheal Mary Ann, Menheniot
Wheal Trelawny, Menheniot
South and West Caradon mines, St Cleer
Trevaunance Mine, St Agnes
Cam Brea Mines, Illogan
Gunheath China Clay Pit, St.AustellHingston Down Quarry, Calstock
Wheal Buller, Redruth
FRANCEVILLITE(Ba,Pb)(UO2)2(VO4)2.5H2O.
4SLBM BM(NH) specimen, from V.P. Aspland (1936).
South Terras Mine, St Stephen-in-Brannel BI
Francolite synonym of carbonate-fluorapatite q.v..
FRANKLINITE(Zn,Mn,Fe)(Fe,Mn)2O4
W.A.E.Ussher, G.Barrow and D.A.MacAlister, with J.S.Flett (1909) Geology of thecountry around Bodmin and St.Austell.
W.G.Kingsbury (1961) Mineral.Mag. 32, 928. No trace found'.
Bodmin Wheal Mary, Lanivet
FREIBERGITE(Ag,Cu,Fe)12(Sb,As)4S13.
J.H.Collins (1871) pt.2, 45. (as polytelite, old unanalysed specimens are probably
argentian tetrahedrite)
Wheal Sampson, Endellion
Old Treburgett Mine, St Teath
Silver Vein Mine, St Winnow

GALENA
PbS.
M.H.Klaproth (1787) 30.
Wheal Penrose, Sithney
Penberthy Croft Mine, St Hilary
Tresavean Mine, Gwennap
Poldice Mine, Gwennap
Wheal Mary Ann, Menheniot
Herodsfoot Mine, Lanreath
East Wheal Rose, Newlyn East
Greystone Quarry, Lezant
Greystone Mine, Lezant
Wheal Hope, Perranzabuloe, (also pseudomorphous after pyromorphite)
Chiverton Mines, Perranzabuloe
GALENOBISMUTITE
PbBi2S4.
R.Sparks specimen collected 1971, X-rd analysis by BM(NH)
Wheal Penrose, Sithney BI
GENTHELVITE
Zn4Be3Si3O12S.
A.W.G.Kingsbury (1961) Mineral.Mag. 32,929.
Treburland Manganese Mine, Altarnun BI
GEOCRONITE
Pb14(Sb,As)6S23.
A.J.Criddle and C.D.Stanley eds. (1986) The Quantitative Data File for Ore
Minerals 2nd. issue. BM(NH)Treore Mine, St.TeathGERSDORFFITE
NiAsS.
R.J.Davis, M.H.Hey and A.W.G.Kingsbury (1965) Mineral.Mag. 35,
South Terras Mine, St Stephen-in-Brannel
GIBBSITE
A1(OH)3.
H.G.Macpherson (1983) Mineral.Mag. 47,250. (P.G. Embrey. BM(NH) spec.
1981.XSee Bannister (1950) Mineral.Mag. 29,12)
Wheal Gorland, St. Day BI
Bosahan Quarry, Constantine
GLAUCONITE(K,Na)(Fe3+,Al,Mg)2(SrAl)4O10(OH)2.
J.H.Collins (1871) pt.2 51-2.
Wheal Coates, St Agnes

GOETHITEFeO(OH).
Greg and Lettsom (1858) 251-2.
Botallack Mine, St Just
Parknoweth Mine, St Just
Carn Brea Mine, Illogan
Wheal Druid, Illogan
Wheal Beauchamp, Redruth
Wheal Buller, Redruth
Phoenix United Mines, Linkinhorne
Kernick Iron Lode, St Austell
Restormel Royal Iron Mine, Lanlivery
Wheal Cock, St.Just
Polzeath Consols, St.MinverGOLD
Au.
W.Phillips (1819) 240-2.
Carnon Valley placers
Ladock placers
Redmoor placers,
Lanlivery St Ewe
Mudian Vean, Meneage
Wheal Gorland, Gwennap
Perran Gt. St George Mine, Perranzabuloe
Treore Mine, St Teath
Wheal Sparnon, Redruth
Botallack, St.Just(Wheal Jane, Kea, reported occurence a hoax.)
GOSLARITEZnSO4.7H2O.
W.Phillips (1819) 266. (Sulphate of zinc, white vitriol) Greg and Lettsom (1858)
429.
Tresavean Mine, Gwennap
Trethallan Mine, Gwennap
Wheal Castle, St Just
West Caradon Mine, St Cleer
Goyazite / Crandallite intermediate J.R.Hawkes et al,(1987) British Geological
Survey Report 19, 4. (see sheet 3.) Also on M.Grigg specimen, N.J.Elton EDX and
XRD.
Gunheath China Clay Pit, St.Austell
GRAPHITEC.
Greg and Lettsom (1858) 1-2.
Wherry Mine, Newlyn
Wheal Alfred, Phillack
Tuckingmill

Kergilliack Quarry, Penryn
Wheal Jane, Kea
Dinas Head, Padstow
Botallack, St.Just
GREIGITE
Fe2+Fe3+2S4.
A.J.Criddle and C.D.Stanley eds. (1986) The Quantitative Data File for Ore
Minerals 2nd. issue. BM(NH) Lond. (from specimen in Kingsbury collection,
BM(NH). 8SLBM Location in doubt, requires confirmation.
Treore Mine, St Teath BI
GROSSULAR
Ca3Al2(SiO4)3.
A.R.Alderman (1934) Mineral.Mag. 24, 42-8.
Zawn a Bal, St.Just
Tuckingmill, Camborne
GROSSULAR variety Stannoan
D.H.M.Alderton and N.J.Jackson (1978) Mineral Mag. 42, 427-34.
The Crowns, Botallack, St Just BI
GRUNERITE(Fe2+,Mg)7Si8O22(OH)2.
C.E.Tilley and J.S.Flett (1930) Summary of Progress, Geol.Surv. of GreatBritain, 24-40.
Botallack, St Just
GYPSUM
CaSO4.2H2O.
J. Carne (1841) TRGSC. 6, 48.
South Crofty Mine, Illogan
Geevor Mine, St Just
Wheal Mary Ann, Menheniot
Levant Mine, St.Just

HALITE
NaCl.
G.S.Camm and M.Merry (1991) UK Jrnl.Mines & Mins., 9, 13.
Penberthy Croft Mine, St.Hilary
HALLOYSITE
A12Si2O5(OH)4.2H2O.
J.Robson (1947) TRGSC 17, 467. (probably halloysite)
Cook's Kitchen Mine, Illogan
Phoenix United Mines, Linkinhorne
St. Austell Granite
HASTINGSITE
NaCa2(Fe2+,Mg)4Fe3+(Si6Al2)O 22(OH)2.
D.H.M.Alderton and N.J.Jackson (1978) Mineral.Mag. 431, M60
Wheal Cock, St.Just. (Potassian magnesian)
HAUYNE(Na,Ca)4-8Al6Si6(O, S)24(SO4,Cl)1-2.
E.H.Adye (1907) Modern Lithology, W.&A.K.Johnson Ltd. Edinburgh and London.
55-6.
Wolf RockHEDENBERGITE
CaFe2+Si2O6.
J.S.Flett (1906) Mem.Geol.Surv., Geol. of Newquay (sheet 346) 27.
Great Retallack Mine, Perranzabuloe
Treburland Manganese Mine, Altarnun
Tregullan Mine, Bodmin
Treburland Manganese Mine, Altarnun (Manganhedenbergite)
HELVINE
Mg4Be3(SO 4)3S.
A.W.G.Kingsbury (1961) Mineral.Mag. 32,924.
Bodmin Wheal Mary, (Wheal Ding section) Lanivet BI
Levant Mine, St Just
Wheal Cock, St Just
Bodmin Wheal Betsy, Lanivet
HEMATITE
Fe2O3.
W.Phillips (1819) 169-72.
Restormel Royal Iron Mine, Lanlivery
Wheal Ruby, St Austell
Shallowater Mine, Bodmin Moor
Tincroft, Illogan .
East Pool Mine, Illogan
South Crofty Mine, Illogan
Boscaswell Mine, St Just
Geevor Mine, St Just

Parknoweth Mine, St Just
Botallack Mine, St Just
HEMIMORPHITE
Zn4Si2O7(OH)2.H2O.
H.G.Dines (1956)
D.Lloyd and R.W.Barstow (1983) J.Russell Soc. 1,(2),23-4.
Fowey Consols, Tywardreath
Greystone Quarry, Lezant
Wheal Herland, Gwinear
HENTSCHELITE
CuFe2(PO 4)2(OH)2.
P.J. Dunn (1990) Am.Min. 75,1197-9. (constituent of 'andrewsite', q.v.)
Phoenix United Mines (Stowe's section) BI
Henwoodite, ferrian turquoise, see turquoise.
HERCYNITE
Fe2+A12O4
T.G.Bonney (1877) QJGS. 33, 884-928.
Goonhilly Downs, The Lizard
In the Lizard serpentinite The Lizard (var. Picotite in dunite)
HERDERITECaBePO4(F,OH).
A.W.G.Kingsbury (1958) Mineral.Mag. 29,815-7.
Wheal Cock, St Just
Colcerrow Quarry, Luxulyan
HERZENBERGITE
SnS
Dr.A.Bromley, Pers.com. Associated with stokesite. Literature reference not yet
located.
Halvasso Quarry, Longdowns BI
HETAEROLITE
ZnMn3+2O4.
R.E.Bevins, R.F.Symes, J.M.Horak and V.A.D.Holyer (1987) Mineral.Mag. 51, 172173.
Eastern Cliff, Kennack Sands, The Lizard BI
HETEROMORPHITE
Pb7Sb 8S19.
4SLBM (recorded by W. Nevill in the printed catalogue of his collection, p20 1872,
requires confirmation.) Russel MS (NHM) 1949
Wheal Boys, Endellion BI

HEULANDITE(Na,Ca)2-3A13(A1,Si)2Sr13O36.12H2O.
A. Russell (1910) Mineral.Mag. 15, 377-79.
Levant Mine, St Just
Wheal Hazard, St Just
Carrick Du Mine, St Ives
Dean Quarry, St.Keverne
HIDALGOITE
PbA13AsO4SO 4(OH)6.
R.J.Davis and M.H.Hey (1964) Mineral.Mag. 33, 937. (X-rd near hidalgoite,
requires confirmation)
Hingston Down Consols, Calstock BI
HISINGERITE
Fe 3+2Si2O5(OH)4.2H2O.
A.H.Church.(1870) J.Chem.Soc. 23, 3-5.
Wheal Jane, Kea BI
Wheal Gorland, Gwennap
Phoenix United Mines, Linkinhorne
Penlee Quarry, Newlyn
HORNBLENDE
Ca2(Mg,Fe2+)4A1Si7A1O22(OH)2.
W.Phillips (1819) 53-4.
Landewednack, The Lizard
Cadgwith, The Lizard
Housel Bay, The Lizard
Porthoustock, The Lizard
Dean Quarry, St Keverne
Mullion, The Lizard
St Terras Mine, St Stephen-in-Brannel
Great Retallack Mine, Perranzabuloe
Botallack, St Just
Penberthy Croft Mine, St.HilaryHÜBNERITE
MnWO4.
Kingsbury collection BM(NH)
Wheal Gorland, Gwennap, (from the north dumps)
Hingston Down Quarry, Calstock
HUMBOLDTINE
Fe2+C2O4.2H2O.
8SLBM BH(NH) identification 1986 on D.Baker specimen.
Pendarves Mine, Camborne BI
Hydro-andradite, hydrous andradite, (replacement of SiO4 by (OH)4.) see
Andradite.

HYDROZINCITE
Zn 5(CO3)2(OH)6.
(1992) P.Golley visual identification using ultra violet, on sphalerite from
Greystones Quarry, Lezant
Old Treburgett Mine, St Teath
Hypersthene synonym of Enstatite q.v.

Idocrase synonymn of Vesuvuanite q.v.
Illitenear(K,H3O)A1,Mg,Fe)2(Si,Al)4O10[(OH)2, H2O].
J.R.Butler (1953) Geochim. Cosmochim. Acta 4, 157-78.
Holseer Cove, Lizard
In the St.Austell ClaysILMENITEFeTiO3.
W.Gregor (1791) Obs.Mdm.Phys. Paris.
38, 68-9. (Menackanite)
Tregonwell Mill Stream, Manaccan BI
Porthallow, The Lizard Gwendra, The Lizard
Buttern Hill Placers, Altarnun
Wheal Vincent,
Altarnun Downgate Mine, Callington
Dinas Head, Padstow
ILMENORUTILE
Fe x(Nb,Ta)2x4Ti1-XO2.
D.A.C.Manning (1953) Proc.Ussher Soc. 5,441.
Gunheath China Clay Pit, St Austell
ILVAITE
CaFe2+2Fe 3+(SiO4)2OH.
4SLBM BM(NH) specimen collected by A.W.G. Kingsbury.
Wheal Messer, Lanivet BI
Indicolite, variety of tourmaline of a blue or bluish black colour. T.G.Bonney(1877) Mineral Mag., 1, 219.
Luxulyan in 'luxullianite'
Wheal Kitty, St.Agnes
Widespread in 'peach' capels
Isopyre, a supposed new mineral, later shown to be impure opal q.v.
IXIOLI I E(Ta,Nb,Sn,Fe,Mn)4Os.
8SLBM BM(NH) identification 1987, X-rd pattern identical with or close to that ofixiolite, requires chemical confirmation. N.Talbot specimen.
Tremearne Pegmatite, Breage BI

JAMESONITE
Pb4FeSb6S14.
W.Haidinger (1825) in F.Mohs, Treat. Min. 1, 451. and 3, 26.
The type locality is Cornwall, however an earlier description of the mineral was
made on material from a Hungarian locality.
Cornwall TL
Wheal Boys, Endellion
Bodannon Mine,
Endellion Treore Mine, St Teath
Pendogget Mine, St Kew
Trevinnick Mine, St Kew
Pengenna Mine, St Kew
Tolpetherwin Quarry, South
Petherwin Linnick, South Petherwin
Port Quin Mine and Beach, Endellion
JAROSITE
KFe3+3(SO4)2(OH)6.
G.Ryback specimen as yellow powder on gossan, collected at Penberthy Croft
Mine 1958, identified using IR, 1961, pers.comm. to the authors. C. Sparrow. (Pers.
Comm.) Identified by X-rd M.Price Oxford Unvy. Museum. 1991.
Gravel Hill Mine, Perranzabuloe
Botallack Cliff, St.Just
Wheal Hazard, St.Just
Wheal Cock, St.Just (Skip Shaft)
JOHANNITE
Cu(UO 2)2(S04)2(OH)2.8H2O.
J.Garby (1848) TRGSC 7, 86.
South Wheal Basset, Mogan BI
Geevor Mine, St Just. (Peeth lode no. 17 level)
JORDANI TE
Pb14(As,Sb)6S23.
J.Robson (1948) TRGSC 17,457. A.W.G.Kingsbury (1954) TRGSC 18,(pt.4 for
1952) 386-406. (doubtful occurrence)
Penberthy Croft Mine, St HilaryJOSËITE
Bi4TeS2.
Kingsbury collection BM(NH) (confirmed 26/1/1988 by R.F.Symes per.comm. to
P.Golley)
Penlee Quarry, NewlynJOSËITE-B
Bi4Te 2S.
Kingsbury collection BM(NH) (confirmed 26/1/1988 by R.F.Symes per.comm. to
P.Golley) Penlee Quarry, Newlyn

KAERSUTITE
NaCa2(Mg,Fe2+)4TiA12Si 6(O,OH)24.
D.R.C.Kempe (1968) Mineral.Mag. 36, 874-6.
In "minverite", St.Minver
KRANKITEFeAsO4.3.5H2O
8SLBM BM(NH) identification 1984 A.L.Ellis specimen.
South Terras Mine, St Stephen-in Brannel
KAOLNITE
A12Si2O5(OH)4.
W.Phillips (1819) 44. (porcelain clay)
Widespread in the areas of St Austell
St. Just
BreageKASOLITEPbUO 2SiO4.H 2O.
Russell Soc. Newsletter (undated C1990) 4, 2.
Loe Warren, St Just
KERMESITE
Sb 2S2O.
Russell ms 1949 BM(NH) Identified by colour only, requires confirmation.
Wheal Prosper, St Ewe
Tredinnick Mine, St Erney
Wheal Leigh, Pillaton
Poltreworgey Mine, Endellion
Cutlinworth Farm, Landrake
Port Quin Beach, St.Endellion
Trebullet Mine, Lezant
KESTERITE
Cu2(Zn,Fe)SnS4.
S.A.Kissin and D.R.Owens (1975) Can.Mineral 13, 309.
St Michael's Mount BI
Cligga Mine, Perranzabuloe
KIDWELLITE
NaFe3+9(PO4)6(OH) 10 .5H 2O.
R.S.W.Braithwaite and H.Corke (1980) Mineral.Mag. 43, 952-3.
Phoenix United Mines, Linkinhorne BIKRÖHNKITE
Na2Cu(SO4)2.2H2O.
R.J.Bowell (1992) J.Russell Soc. vol.4, pt.2, 50.
Wheal Hazard, St.Just
Kupfernickel, synonym of nickeline q. v..

KURAMITE
Cu3SnS4.
8SLBM BM(NH) specimen and analysis C.J. Stanley. (Pers. Comm. 1989).
Gunheath China Clay Pit, St Austell BI
KYANITE
A12SiO5.
J.S.Flett and J.B.Hill (1945) Lizard Survey 14.
St.Erth.
Polkemogo, with sillimanite in cordierite rockPistil Ogo, with sillimanite and staurolite

Labradorite(Ca,Na)(SiAl)4O8. (N&N)
J.J.H.Teall (1888) Mineral.Mag. 8, 116-20.
Man O'war Gneiss, The Lizard
Dean Quarry, St Keverne
Coverack Cove, The Lizard
LANARKITE
Pb2(SO)4O
C. Sparrow Russell Soc. Newsletter 3, (undated C1990) X-rd M. Price, Oxford
University Museum.
Gravel Hill Mine, Perranzabuloe
LANGITE
Cu4SO 4(OH)6.2H2O.
N.S.Maskelyne (1864) Phil.Mag., ser.4, 27,316.
Cornwall TL
Fowey Consols Mine, Tywardreath
Drakewalls Mine, Calstock
Wheal Edward, Calstock
Copper Hill Mine, Redruth
Wheal Bassett, Redruth
East Pool Mine, Illogan
Dolcoath Mine, Camborne
Geevor Mine, St.Just
Phoenix United Mines, Linkinhorne
Sharptor Mine, Linkinhorne
LAUMONTITE
CaA12Si 4O12.4H2O.
BM(NH) X-rd 7593F, very near laumontite, from Geevor Mine, G.Ryback
pers.comm. to the authors.
Geevor Mine, St.Just
LAURIONITE
PbClOH.
A.Russell and A.Hutchinson (1922) Geol.Mag. 59,182.
Wheal Rose, Sithney BI
LAVENDULAN
NaCaCu5(AsO4)4C1.5H2O.
N.Hubbard specimen, collected 1988/9
Cligga Mine, Perranzabuloe
Pentire Glaze Mine, St Minver
LEADHILLTTE
Pb4SO 4(CO3)2(OH)2.
A.Russell (1920) Mineral.Mag. 19, 648.
Wreck of the fireship 'Firebrand', Falmouth Harbour
Greystone Quarry, Lezant

Penberthy Croft, St.Hilary
LEPIDOCROCITE
y-Fe3+O(OH).
C. Sparrow (1989) Russell Soc. SW Newsletter 3, 6. BM(NH) specimen from Great
Retallack. C. Sparrow. Pers. Comm. 1991. X-rd identification M.Price, Oxford
University Museum.
Great Retallack Mine, Perranzabuloe
Gravel Hill Mine, Perranzabuloe
Trewethen Mine, St Kew
LEPIDOLITE
K(Li,AI)3(Si,AI)4O10(F,OH)2.
Greg and Lettsom (1858) 223-5.
Tremearne Pegmatite, Breage
St Michael's Mount
Tregonning Hill, Breage
Lanarth, Redruth
Gunheath China Clay Pit, St Austell
Lepidomelane variety of biotite (q.v.), ferrian biotite.
LEUCOPHOSPHITE
KFe 3+2(PO4)2OH.2H2O.
X-rd 14/6/86 M.Price Oxford University Museum, M. Grigg spec,
also BM(NH) X-rd 6103F (1986) from Gunheath, D.Lloyd spec.?.
Gunheath China Clay Pit, St Austell,
Wheal Gorland, Gwennap
Leucopyrite, synonym of löllingite q.v..
LIBETHENITE
Cu2PO4OH.
W.Phillips (1819) 235. (phosphate of copper)
Old Gunnislake Mine, Calstock BI
East Gunnislake Mine, Calstock (arsenatian var)
Phoenix United Mine, Linkinhorne
Gunheath China Clay Pit, St AustellSouth Wheal Frances, Illogan
Basset Mines, IIlogan
Penberthy Croft Mine, St Hilary
Pentireglaze Mine, St Minver
Wheat Cock, St.Just (Skip Shaft)
LIEBIGITE
Ca2U02(CO3)3.11H2O.
H.T.Evans and C.Frondel (1950) Am.Min. 35, 25111.
Wheal Basset, Redruth BI

LIKASITE
Cu3(NO3)(OH)5.2H2O
Barry Gamble specimen, confirmed BM(NH) September 1993.
Hingston Down Quarry, Calstock BI
LINARITE
PbCuSO4(OH)2.
J.H.Collins (1871) pt.2, 64. (found in 1866)
Wheal Penrose, Sithney
Garras Mine, St.Erme
Penhale Mine, Perranzabuloe
Pentire Glaze Mine, St MinverGreystone Quarry, Lezant
Wheal Carpenter, Gwinear
Penberthy Croft Mine, St Hilary
Polzeath Consols, St.Minver
LIROCONITE
Cu2AlAsO4(OH)4. 4H2O.
J.L.de Bournon (1801) Phil.Trans., 169-91.
Cornwall TL
Wheal Muttrell, Gwennap
Wheal Gorland, Gwennap
Ting Tang Mine, Gwennap
Wheal Unity, Gwennap
Wheal Cock, St.Just (Skip Shaft)
LISKEARDITE(A1,Fe3+)3AsO4(OH)6.5H2O.
N.S.Maskelyne (1878) Nature. 18, 426. Liskeard,
Cornwall TL
Marke Valley Mine,
Linkinhome Penberthy Croft Mine, St Hilary
LIZARDITE
Mg3Si 2O5(OH)4.
E.J.W.Whittaker and J.Zussman (1956) Mineral.Mag. 31, 107-26. Eastern Cliff,
Kennack Sands, The Lizard TL
Common in the Lizard seipentinite
LÖLLINGITE
FeAs2.
J.H.Collins.(1871) Pt.2, 62. (Leucopyrite)
New Consols Mine, Luckett
Castle-an-Dinas Mine, St Columb
Penlee Quarry, Newlyn
Cligga Head Mine, Perranzabuloe.
Tremeame Pegmatite, Breage
Lonchidite, arsenical marcasite, see marcasite.

LUDLAMIITE(Fe 2+,Mn,Mg)3(PO4)2.4H2O.
F.Field and N.S.Maskelyne (1877) Phil.Mag. 3, 52-7.
Wheal Jane, Kea TL
Lunnite, synonym of pseudomalachite q.v..

MACKINAWITE(Fe,Ni)9S8.
D.H.Green (1964) J.Petrol. 5, 134-38.
The Rill, Kynance Cove BI
MAGNESITE
MgCO3.
J.Garby (1863) TRGSC 7, 81.
The Rill, Kynance Cliff, The Lizard
The Lizard area, in serpentinite
Wheal Grambler, Gwennap
MAGNETITE
Fee+Fe 3+2O4.
W.Phillips (1819) 167-8. (oxydulated iron).
Botallack Mine, St Just
The Lizard
Gwenter
Treluswell, Penryn
Wheal Jane, Kea
Tregurtha Downs Mine, St Hilary
South Terras Mine, St Stephen-in-Brannel
Tretoil Mine, Lanivet
Trewen Quarry, South Petherwin
Polyphant Quarry, South Petherwin
Dean Quarry, St Keverne (Titanian magnetite)
MAHLMOODITE
FeZr(PO4)2.4H2O.
N.Elton(1994) Russell Soc.SW Branch Newsletter 13, 10-11.
Mineral Mag. 59, 166-168.
Kerriack Cove, Illogan BI (2nd world occurrence)
MALACHITE
Cu2CO3(OH)2.
W.Phillips (1819) 231-2. (green copper/malachite)
Wheal Gorland, Gwennap
Wheal Unity, Gwennap
Ting-Tang Mine, Gwennap
Carharrack Mine, Gwennap
Dolcoath Mine, Camborne
Wheal Buller, Redruth
Wheal Basset, Illlogan
South Caradon Mine, St Cleer
Phoenix United Mines, Linkinhorne
Old Gunnislake Mine, Calstock
Polzeath Consols, St.Minver
Gunheath China Clay Pit, St.Austell
Malacolite, Synonym of diopside q.v..

MALAYAITECaSnSiO5.
G.Van Marcke de Lummen (1985) Proc. Ussher Soc.
The Crowns, Botallack
Manganapatite, variety of fluorapatite (q.v.), original occurrence contained 6.7%
MnO.
Mangandolomite, variety of dolomite (q.v.), a manganiferous dolomite.
Manganhedenbergite, variety of hedenbergite (q.v.), manganoan hedenbergite(6.5% MnO).
MANGANITE
Mn3+O(OH).
W.Phillips (1819) 183. (Grey oxide of manganese)
Botallack Mine, St Just
Wheal Bucketts, Redruth
Lidcott Mine, Laneast
Trevena Mine, Tintagel
Restormel Royal Iron Mine, Lanlivery
Ruthers Mine, St Columb
Wheal Cock, St-Just (Skip Shaft)
Manganocalcite, variety of calcite (q.v.) with over 30% MnCO3.
MANGANOCOLUMBITE(Mn,Fe2+)(Nb,Ta),O6
M.Grigg specimen identified X-rd N.Elton 1994.
Gunheath China Clay Pit, St.Austell
MANSFIELDITEAlAsO4.2H2O.
pers.conmi. D.Clough. to P.J.Golley, identified BM(NH).
Penberthy Croft Mine, St Hilary
MARCASITE
FeS2.
W.Phillips (1819) 165-7. (radiated iron pyrites/white iron pyrites)
Cooks Kitchen Mine, Illogan
Tincroft Mine, Illogan
South Crofty Mine, Illogan
Wheal Clifford, Gwennap
Wheal Unity, Gwennap
Fowey Consols, Tywardreath
Wheal Jane. Kea
Mount Wellington Mine, Gwenmap
Wheal Mary Ann. Meiheniot
Hingston Downs Quarry, Calstock
Cook's Kitchen Mine, Illogan (Lonchidite)Tincroft Mine, Illogan (Lonchidite)
Mannatite, iron rich variety of sphalerite q.v..
MAWSONITE
Cu6Fe,SnSs.
D.A.C.Manning (1983) Proc.Ussher.Soc. 5,411-16.
Gunheath China Clay Pit, St Austell BI
MELANTERITEFeSO4.7H2O.
J.Garby (1848) TRGSC 7, 84. (sulphate of iron, green vitriol)
South Crofty Mine, Illogan
Wheal Jane. Kea
Fowey Consols, TywardreathTing-Tang Mine, Gwennap
United Mines, Gwennap
Geevor Mine, St. Just
Wheal Jane, Kea (pisanite)
Wheal Coates, St Agnes (pisanite)
Menackenite, synonym of ilmenite q.v..
MENEGHINITE
Pb13CuSb7S24.
A. W.G.Kingsbury (1965) Mineral.Mag. 35,424-6.
Pengemia Mine, St Kew BI
Pentire vein system, St MinverPortquin vein system, Endellion
MESOLITE
Na2Ca2AI6Si9O30.8H2O.
T.M.Hall (1868) The Mineralogist's Directory. 43.
A.Russell (1910) Mineral.Mag. 15, 3834. (of doubtful occurrence)
The Cliffs between Botallack and Wheal Cock, St.Just
METANOVÁCEKITE
Mg(UO,),(AsO 4)2 .4-8H20.
N.J.Elton, J.J.Hooper and A.Jeal (1994) Mineral Mag,-. 58, 513-4. Possibly formed
by dehydration of novácekite subsequent to collection'
West Wheal Owles, St.Just BI
Meta-SaléeiteMg(UO2)2P04),.8H,O.
(the lower hydrate of saléeite) P.J.Golley specimen, identified by optical
spectrometer and X-rd 17/3/1970 by D.Atkin, Institute of Geological Sciences.
South Terras Mine, St Stephen-in-Brannel BI
Wheal Edward, St.Just

METASIDERONATRITE
Na2Fe 3+2(SO4)4(OH)2.3H2O.
8SLBM BM(NH) identification 1985, R.E.Starkey specimen.
Trerubies Cove, near Delabole BI
METATORBERNITE
Cu(UO 2)2(PO4)2. 8H2O.
A.Hallimond (1920) Mineral Mag. 19, 43.
Most specimens labelled torbernite (q.v.) are metatorbernite.
Old Gunnislake Mine, Calstock (natural metatorbernite) BI
METAVOLTINE
Na6K2Fe 2+Fe3+6(SO4)12O2.18H2O.
8SLBM BM(NH) identification 1981, G.Ryback specimen.
Wheal Edward, St Just BI
METAZEUNERITE
Cu(UO2)2(AsO4)2 .8H2O.
A.W.G.Kingsbury (1952) TRGSC, 18, 386.
Wheal Gorland, Gwennap
Geevor Mine, St.Just
Wheal Edward, St.Just
MICROLINE
KA1Si3O8
W.A.Richardson (1923) QJGS 79, 547-76.
in the St.Austell Granite
In biotite granite, Lands End
In Li-mica granite, Tregonning Hill
MILARITE
K2Ca4A12Be4Si 24O60.H2).
SLBM4 A.W.G. Kingsbury specimen collected 1951-2.
Cheesewring Quarry, Linkinhome
MILLERITE
NiS.
J.Garby (1848) TRGSC 7, 72-92. (sulphuret of nickel)
St Austell Consols
Gerrans Bay
Fowey Consols, Tywardreath
Pengelly Mine, St Ewe
Wheal Chance, St Austell
Wheal Spamon, Redruth
Greystone Quarry, Lezant
MIMETITE
Pb5(AsO 4)3C1.
W.Gregor (1809) Phil.Trans.Roy.Soc.Lond. 99,195-205. (established presence ofchloride in mimetite)Wheal Unity, Gwennap
Wheal Alfred, Phillack
Wheal Carpenter, Gwinear
Wheal Rose, Sithney
Wheal Penrose, Sithney
Penberthy Croft Mine, St Hilary
Wheal Boys, Endellion
Trevinnick Mine, St Kew
Trewethen Mine, St Kew
Wheal Gorland, Gwennap
Croft Gothal Mine, St. Hilary
Pentire Glaze Mine, St Minver (crystal form suggests also variety Campylite,
R.Love specimen)
MINNESOTAITE(Fe 2+,Mg)3Si 4010(OH)2.
A.H.Clark (1970) Am.Min. 55, 283-4.
The Lizard
MITRIDATTTECa2Fe+32(PO4)3O23H2O.
J.R.Hawkes et al (1987) British Geological Survey 19, 4. (see sheet 3).
Gunheath China Clay Pit, St.Austell
MIXTTE
BiCu6(AsO4)3(OH)6.3H2O.
4SLBM BM(NH) specimen collected by A. W.G.Kingsbury.
Wheal Owles, St Just BI
Wheal Edward, St Just
Penberthy Croft Mine, St Hilary
Wheal Carpenter, Gwinnear
South Terras Mine, St. Stephen-in-Brannel
Old Gunnislake Mine, Calstock
MOLYBDENITE
MOS2
W.Phillips (1819) 185-6. (sulphuret of molybdena)
Wheal Unity, Gwennap
Wheal Gorland, Gwennap
Wheal Unity, Gwinear
Wheal Mary, Lelant
Penlee Quarry, Newlyn
Kit Hill Mine, Stokeclimsland
Prince of Wales Mine, Calstock
Hingston Down Quarry, Calstock
Drakewalls Mine, Calstock
Cligga Mine, Perranzabuloe

MONAZITE-(Ce)(Ce,La,Nd,Th)PO4.
H.A.Miers (1885) Mineral.Mag. 6, 164.
Lanterdan Quarry, Tintagel BI
Hingston Down Quarry, Calstock
Carnmenellis granite (accessory)
Prince of Wales Quarry, Tintagel
MONTMOR1LLONITE(Na,Ca)0.33(A1,Mg)2Si 4O10(OH)2.nH2O.
J.Garby (1848) TRGSC 7, 76. (fullers earth)
Great Retallack Mine, Perranzabuloe BI
Dean Quarry, St Keverne
MORINITE
NaCa22Al2(PO4)2(F,OH)5.2H2O.
N.J.Elton, J.J.Hooper and L.Coggan, in preparation.
Gunheath China Clay Pit, St.Austell
MOTTRAMITE
Pb(Cu,Zn)VO4OH.
G.S.Camm and M.Merry (1991) UKJMM. 9, 13. (Mottramite - Duftite
intermediate)
Penberthy Croft Mine, St Hilary
N.J.Hooper X-rd. of V.A.D.Holyer specimen.- mottramite.
Dean Quarry, St.Keverne
MPOROROITE
WA1O3(OH)3.2H2O.
B.Gamble spec. X-rd BM(NH) R.F.Symes 1993.
Hingston Down Quarry, Calstock BI
MUSCOVITE
KAl2(Si3Al)O 10(OH)2.
Greg and Lettsom (1858) 114-7.
Common throughout the Cornish granite
Gunheath China Clay Pit, St Austell
Trelavour Down, St Dennis

NADORITEPbSbO2C1.
A.Russell (1927) Mineral.Mag. 21, 272. (read in 1923).
Bodannon Mine, St Endellion BI
Trevinnick Mine, St Kew
Portquin Beach, St.Endellion
Treore Mine, St Teath
Wheal Leigh, Pillaton
NANTOKITE
CuCI.
P.Seroka specimen, purchased 1963. Also reported by R.W.Barstow.
Levant Mine, St.Just
NATROLITE
Na2A12Si 3O10.2H2O.
J.Carne (1846) TRGSC 6, 48. (needlestone)
Chynalls Point, St Keverne
Parc Bean Cove, Mullion
Pol Cornick, The Lizard
George's Cove, The Lizard
Potstone Point, The Lizard
Dean Quarry, St.Kevetne
NATROMONTEBRASITE(Na,Li)AlPO4(OH,F).
M.Stone and M.C.George (1983) Proc.Ussher Soc. 5, 428-31.
Tremearne Pegamatite, Breage BI
NATRONNa2CO3.10H2O.
R.J.Bowell (1992) J. Russell Soc. 4, pt.2, 51. (previous records doubtful)
Botallack, St Just
NEOTOCITE(Mn,Fe,Mg)SiO3.H 20.
J.H.Collins (1878) Mineral.Mag. 2, 91. and(1879)3,89.
Wheal Owles, St Just BI (penwithite)
Geevor Mine, St. Just
NEPHELINE(Na,K)AlSiO4.
S. Allport (1871) Geol.Mag. 8, 247.
Wolf Rock BI
NICKELINE
NiAs.
W.Phillips (1819) 211. (Kupfernickel)
Wheal Chance, Tywardreath
Pengelly Mine, St EweFowey Consols, Tywardreath
St Austell Consols
Roskrow United Mine, Ponsanooth
NICKEL-SKUTTERUDITE(chloanthite)
NiAs2-3
Wheal Ann, Phillack (RIC spec.)
St Austell Consols
Fowey Consols, Tywardreath
Dolcoath Mine, Camborne
NONTRONITE (Chloropal)
Na0.3Fe 3+2 (Si,Al)4O10(OH)2.nH2O.
A.H.Church (1866) Chem.News. 14, 71.
Carclaze China Clay Pit, St AustellCarn Grey, Breage
Tremearne Pegmatite, BreageNOSEAN
Na 8A16Si 6O24(SO4).
S.Allport (1874) Geol.Mag. 1, 462. also, QJGS. 30, 529.
Wolf Rock BINOVÁCEKITE
Mg(UO 2)2(AsO 4)2.12(?)H2O.
N.J.Elton, J.J.Hooper and A.Jeal (1994) Mineral Mag. 58, in press.
Wheal Owles, St.Just BI
see also Unnamed Hydrated Uranyl Arsenate.

Oligoclase (Na,Ca)Si,Al)4O8,
J.Robson (1964) RGSC 150th Annvs. Vol. 123.
In the Cornish "greenstones" In biotite-granite
OLIVENITE
Cu2AsO4.OH.
M.H.Klaproth (1787) 29.
Wheal Gorland, Gwennap TL
Wheal Unity, Gwennap
Ting-Tang Mine, Gwennap
Carharrack Mine, Gwennap Phoenix
United Mines, Linkinhorne
Marke Valley Mine, Linkinhorne
Old Gunnislake Mine, CalstockSouth Terras Mine, St Stephen-in-Brannel
Penberthy Croft Mine, St Hilary
Pentire Glaze Mine, St.Minver
OLIVINE(Mg,Fe)SiO4.
J. H. Collins (1911) JRIC 18, 2, 451.
In the Meneage serpentine The Lizard
OPAL
SiO2.nH2O.
W.Phillips (1819) 9. (A specimen of fire opal from High Rosewame Mine was in
WP's collection raised about 1780.)
Rosewarne Mine, Gwinear
Carclaze China Clay Pit, St.Austell
Slip China-stone Quarry, St Dennis
Gunheath China Clay Pit, St Austell
Botallack Mine, St Just
Wheal Gorland, Gwennap
Wheal Damsel, Gwennap
Wheal Maudlin, Lanlivery
Wheal Buller, Redruth
Stenna Gwynn Mine, St Stephen-in-Brannel
Rocks China Clay Pit, St.Austell
Wheal Carne, St Just (TL of Isopyre)
ORPIMENTAs2S3.
J.Sowerby (1819) British Mineralogy No. 547.
Perranarworthal (Gregor specimen)
Burraton Coombe Quarry, Saltash (Sir A.Russell specimen)
Orthite, synonym of allanite q. v..

ORTHOCLASE
KAISi3O8
W.Phillips (1819) 89. (adularia)
Trewavas Head, Breage
Botallack Mine, St Just
Balleswidden Mine, St Just
St. Michael's Mount
Kynance Cove, The Lizard
United Mines, Gwennap
Tresayes Quarry, Roche (the "Glass Mine")
Wheal Coates, St Agnes
Colcerrow Quarry,
Luxulyan Gunheath China Clay Pit, St Austell
OTTRELITE(Mn,Fe2+,Mg)2Al4Si2O10(OH)4.
W.M.Hutchins (1889) Geol.Mag. 6, 214. (optical determination.) A.J.Brearley(1988) Mineral.Mag. 52, 394-96, quoted T.J.Primmer thesis showing this ismerely chloritoid with <1.1% MnO and not ottrelite.
Tintagel (In the Woolgarden phyllites)

Palygorskite, see pilolite, many but not all pilolites are palygorskite.
PARACOSTBITE
CoSbS.
A.J.Criddle and C.D. Stanley eds.(1986) The Quantative Data File for ore
Minerals. 2nd. issue. BM(NH) Lond. (specimen analysed was from the Kingsbury
collection BM(NH) and may be from another locality, requires confirmation)
Wheal Cock, St Just BI
PARALAURIONITE
PbClOH.
A.Russell and A.Hutchinson (1922) Geol.Mag. 59,182.
Wheal Rose, Sithney BI
Daymer Bay, Padstow
PARATACAMITE
Cu2(OH)3C1.
F.A.Bannister, M.H.Hey and G.F.Claringbull (1950) Mineral.Mag. 29,280-7.
Botallack Mine, St.Just
Levant Mine, St.Just
Geevor Mine, St. Just
West Wheal Owles, St Just
Wheal Cock, St Just
Cligga Head, Perranzabuloe
Penberthy Croft Mine, St Hilary
Wheal Hazard, St.Just
Botallack Cliff, St.Just
PARGASITE
NaCa2(Mg,Fe2+)4A1(Si6A12)O22(OH)2.
D.H.Green (1964) 150th Ann. RGSC, 100.
Kildown Point, The Lizard
Wheal Cock, St.Just
Botallack, St.Just
PARNAUITE
Cu9(AsO4)2SO 4(OH)10.7H2O.
8SLBM BM(NH) identification 1981
A. Russell collection specimen BM(NH).
Wheal Gorland, Gwennap BI
Penberthy Croft Mine, St Hilary
Wheal Unity, Gwennap
South Tolcarne Mine, Camborne
Mulberry Stockworks, Lanivet
Marke Valley Mine, Linkinhorne
PECTOLITE
NaCa2Si3O8OH.
A.F. Seager(1971). TRGSC. 20, (for 1967-8),97-113.
Dean Quarry, St Keverne

Porthoustock Quarry, St Keverne
PENTLANDITE(Fe,Ni)9S8.
Greg and Lettsom (1858) 296-7. (Eisennickelkies)
Wheal Jane, Kea
Wheal Falmouth, Kea
Penwithite, synonym of neotocite q.v..
Phacolite, a habit variety of chabazite Q.V..
PHARMACOSIDERITE
KFe3+4(AsO 4)3(OH)4.6-7H2O.
W.Phillips (1811) Trans.Geol.Soc.Lond. 1, 23-37 + figs. (arseiate of iron)Cornwall TL
Carharrack Mine, Gwennap
Wheal Gorland, Gwennap
Wheal Unity, Gwennap
Terras Iron Mine, St Stephen-in-Brannel
Penberthy Croft Mine, St Hilary
Old Gunnislake Mine, Calstock
Carn Brea Mine, IIlogan
Old Beam Mine, Bugle
Botallack Mine, St Just
Phoenix United Mine, Linkinhorne
Gunheath China Clay Pit, St.Austell
PHENAKITE
Be2SiO4.
J.Sowerby (1809) vol.4, 53-4. p1.331. (white tourmaline, said to be found in a mineat St.Just)
A. Russell (1911) Mineral. Mag. 16, 55-62.
Cheesewring Quarry, Linkinhome BI
South Phoenix Mine, Linkinhorne
South Crofty Mine, Illogan
Wheal Gorland, Gwennap
Wheal Cock, St Just
Wheal Edward, St Just
Wheal Kitty, St Agnes
PHILIPSBURGITE(Cu,Zn)6[(As,P)O4]2(OH)6.H2O.
8SLBM BM(NH) identification 1989, N.Hubbard specimen.
Wheal Carpenter, Gwinear
Penberthy Croft Mine, St Hilary
PHLOGOPITE
KMg3A1Si3O10(F,OH)2.
H.G.Dines(1956) Met.Min.Reg.SW.Engld. pt.2, 522.

Castle-an-Dins Mine,
St Columb Pendennis, Falmouth
PHOSGENITE
Pb 2CO 3C12.
Greg and Lettsom (1858) 421-3.
Wheal Confidence, Perranzabuloe (A.Russell considered this specimen to be from
Wheal Rose, Sithney)
Wheal Rose, Sithney
Penberthy Croft Mine,
St Hilary Bounds Cliff, Endellion
Tolcarne Beach, Newquay
Tregardock Beach, Newquay
Daymer Bay, Padstow
Newporth Beach, Falmouth
Wheal Golden, Perranzabuloe
Padstow Consols
PHOSPHOSIDERITE
Fe 3+ PO 4.2H2O
C. Sparrow (1989) Russell Society South West Branch Newsletter. No 3, 6. X-rd
identification M.Price Oxford University Museum.
Gravel Hill Mine, Perranzabuloe
PHOSPHURANYLITECa(UO 2)3(PO4)2(OH)2.6H2O.
8SLBM BM(NH) specimen, collected by R.W.Barstow. X-rd pattern near that ofphosphuranylite, chemical confirmation required.
Wheal Edward, St Just BI
Picotite, magnesium chromian hercynite.
Picrolite, synonym of antigorite q.v..
PIGEONITE(Mg,Fe2+,Ca)2Si2O6.
S.O.Agrell (1939) Mineral.Mag. 25, 305.
In the adinoles at Dinas Head, St.Merryn
Pigotite
An Al bearing organic compound. J.F.W.Johnston (1840) Phil.Mag. 3rd. ser., 17,382. Said to be have been formed by the action of wet vegetation on granite. seeHey 3.
Cornwall TL
Cripp's Cove, Treen
Piper's Hole, St.Mary's, Isles of Scilly
Pilolite (palygorskite ?) near Mg4A12Si10O27.15H2O
Oxford University specimen collected by A. W.G.Kingsbury.
Tolpetherwin Quarry, South Petherwin

Pisanite, variety of melanterite (q.v.), cuprian melanterite.
Pitchblende, variety of uraninite, name given to massive uraninite (q.v.).
PITTICITE
Amorphous Fe3+ hydrous arsenate sulphate
Greg and Lettsom (1858) 277-8.
Wheal Sparnon, Redruth
Penberthy Croft Mine, St Hilary
Botallack Mine, St Just
Dolcoath Mine, Camborne
PLAGIONITE
Pb 5Sb8S17.
R.E.Clayton,R.C.Scrivener and C.J.Stanley (1990). Proc.Ussh.Soc., 7,258262.
Bounds Cliff vein system, Endellion.
PLANCHEITE
Cu8Si 8O22(OH)4.H2O.
8 SLBM BM(NH) specimen collected by A.W.G.Kingsbury 1958.
Gunheath China Clay Pit, St Austell
PLATINUM
Pt.
G.McPherson and T.Lamb (1921) Geol.Mag. 58, 512-14.
Manaccan, The Lizard
Kynance Cove, The Lizard
PLUMBOGUMMITE
PbA13(PO4)2(OH)5.H 2O.
A.W.G. Kingsbury.(1954) TRGSC. 18, part4 (for 1952), 393-4.
Wheal Gorland, Gwennap
Penberthy Croft Mine, St Hilary
Buttern Hill Placers, Altarnun
Wheal Alfred, Gwinear
PLUMBOJAROSITE
PbFe3+ 6(SO4)4(OH)12
A.W.G.Kingsbury and J.Hartley (1960) Mineral.Mag. 32, 423-32.
Penberthy Croft Mine, St Hilary
Wheal Carpenter, Gwinear
POLYBASITE(Ag,Cu)16Sb2S11.
C.A.Joy (1853) Inaug. - Diss. Gottingen. R.E.Clayton, R.C.Scrivener and
C.J.Stanley (1990) Proc.Ussh.Soc., 7, 258-262
Pentire vein system, St MinverPolytelite, synonym of freibergite q.v..
POSNJAKITE
Cu4SO 4(OH)6.H2O.
J.R.Knight and R.W.Barstow (1970) Mineral.Mag. 37, 740.
Drakewalls Mine, Calstock BI
Fowey Consols Mine, Tywardreath
Greystone Quarry, Lezant
Potassium magnesio-arfvedsonite
A.Hall (1982) Mineral.Mag. 45, 257-66.
Described in 8SLBM as a new amphibole, no record found of acceptance as a
species, no reference in Hey 3.
Pendennis Point, Falmouth
PREHNITE
Ca2A12Sr3O10(OH)2.
J.Carne (1822) TRGSC. 2, 310.
Porthoustock Quarry, St Keverne
Dean Quarry, St Keverne
Ghostcroft Mine, Mullion
Roscommon Cliff, St Just
Predannack Head, The Lizard area
Ogo Dour, The Lizard area
Prochlorite, synonym of ripidolite, variety of clinochlore (q.v.)
Protolithionite, lithium iron variety of zinnwaldite q.v..
PROUSTITE
Ag3AsS3.
H.G.Macpherson (1983) Mineral.Mag. 47,255. (BM(NH) specimen 36442. P.G.
Embrey 1981, Pers. Comm.).
Wheal Ludcott, St Ive BI
Przibramite, variety of sphalerite (q.v.), with up to 2% Cd.
PSEUDOBOLÉITE
Pb5Cu4C110(OH)8.2H2O
8SLBM V.A.D.Holyer specimen in the National Museum of Wales, (X-rdidentification 1983 by P.A.Williams).
Tolcarne Beach, Newquay BI
PSEUDOMALACHITE
Cu5(PO4)2(OH)4.H2O.
M.F.Heddle (1855) Phil.Mag. 10, 39. (lunnite)
Cornwall BI
Old Gunnislake Mine, Calstock
East Gunnislake Mine, Calstock
Wheal Carpenter, Gwinear
South Tolcarne Mine, Camborne

Phoenix United Mine, Linkinhorne
Penberthy Croft Mine, St Hilary
Wheal Providence, Gwinear
Gunheath China Clay Pit, St.Austell
Psilomelane a group name for hard massive black manganese oxides. J.H.Collins(1871) pt.2, 82.
Wheal Bucketts , Redruth
Pednandrea Mine, Redruth
Wheal Tolgus, Redruth
Restormel Royal Iron Mine, Lanlivery, (romanechite?) Dana 7th ed., 1, 699.
PUMPELLYITE - (Mg)
Ca2MgA12SiO4Si2O7(OH)2.H2O.
R.P.Barnes and J.R.Andrews (1981) Proc.Ussher Soc. 5, 139-46.
Great Penhaver Point, Roseland
Penlee Quarry, Newlyn
PYRARGYRITEAg3SbS3.
W.Phillips (1819) 217-18. (Red silver)
Wheal Ludcott, St Ive
Wheal Herland, Gwinear
North Dolcoath Mine, Camborne
Dolcoath Mine, Cambome
Wheal Mexico, Perranzabuloe
Holmbush Mine, Stokeclimsland
Wheal Duchy, Calstock
Wheal Alfred, Phillack
Silver Vein Mine, St Winnow
Harrowbarrow Mine, St Mellion
Herodsfoot Mine, Lanreath
PYRITEFeS2.
W.Phillips (1819) 164-6.
Botallack Mine, St Just
Levant Mine, St.Just
Great Wheal Fortune, Breage
Great Wheal Vor, Breage
Wheal Prospidnick, Sithney
Dolcoath Mine, Camborne
Tincroft Mine, Illogan
Wheal Jane, Kea
Wheal Unity, Gwennap
Wheal Kitty, St Agnes

PYROLUSITE
MnO2.
J.Garby (1848) TRGSC 7, 84.
Restormel Royal Iron Mine, Lanlivery
Treburland Manganese Mine, Altarnun
Pencrebar Mine, Callington
Lidcott Mine, Laneast
Wheal Truscott, Launceston
Greystone Quarry, Lezant
Tremore Quarry, Lanivet
PYROMORPHITE
Pb5(PO4)3C1.
W.Phillips (1819) 256-7. (phosphate of lead)
Wheal Alfred, Phillack
Wheal Hope, Perranzabuloe
Penberthy Croft Mine, St Hilary
Wheal Rose, Sithney
Wheal Penrose, Sithney
Wheal Helston
Garras Mine, St Erme
Trevinnick Mine, St Kew
Pentire Glaze Mine, St Minver
Watergate Bay, Newquay
Whipsiderry Beach adits, Newquay
Gunheath China Clay Pit, St.Austell
PYROPHYLLITE
A12Si 4O10(OH)2.
T.J.Primmer (1985) Mineral.Mag. 49, 365-74.
Bude - Newquay coast.
The Lizard (BM(NH) specimen)
PYROSMALITE(Fe 2+,Mn)8S16O15(OH,CI)to.
P.G.Embrey, footnote in P.E.Brown (1959) Mineral.Mag. 32,244.
Treburland Manganese Mine, Altamun
PYROSTILPNITEAg3SbS3.
8SLBM BM(NH) identification and specimen, collected by A.W.G.Kingsbury
1959.
St Teath BIPYRRHOTITE
FeS.
J.H.Collins (1871) Pt.2, 85.
East Pool Mine, Illogan
Botallack Mine, St Just
Wheal Jane, Kea

Wheal Kine, St Agnes
St Austell Consols
Wheal Maudlin, Lanlivery
Great Onslow Consols, St Breward

QUARTZ
SiO2.
Jars (1781) 3, 86.
(Wheal Sparnon, Redruth, cuttable quality)
QUARTZ Rock Crystal
SiO2.
Botallack Mine, St Just
Wheal Diamond, St Just
St Michael's Mount
Wheal Alfred, Phillack
Dolcoath Mine, Cambome
North Roskear Mine, Camborne
Wheal Sparnon, Redruth
Wheal Mary Ann, Menheniot
Lanterdan Quarry, Tintagel
Delabole Slate Quarry
QUARTZ Citrine
SiO2:
Botallack Mine, St Just
St. Michael's Mount
Carn Gloose, St Just
Wheal Jane, Kea
Wheal Buller, Redruth
Restormel Royal Iron Mines, Lanlivery
QUARTZ Smoky Quartz
SiO2.
Trewellard, St.Just
North Roskear Mine, Cambome
Wheal Buller, Redruth
Rostowrack China Clay Pit, St AustellSouth Terras Mine, St Stephen-inBrannel
Colcerrow Quarry, Luxulyan
QUARTZ
Rose Quartz
SiO2.
St. Michael's Mount
Wheal Bucketts, Redruth
QUARTZ Green quartz
SiO2.
Rostowrack China Clay Pit, St Austell
Restormel Royal Iron Mine, Lanlivery
QUARTZ Blue Quartz
SiO2.
North Roskear Mine, Camborne

QUARTZ
Rutilated Quartz Lanterdan Quarry,
Tintagel Delabole Slate Quarry
QUARTZ
pseudomorphs after Beta Quartz
SiO2.
J.Drugman (1928) Mineral Mag., 21, 366-82.
Wheal Coates, St Agnes
Belowda Beacon,
Roche Belowda China Clay Pit, Roche
QUARTZ
Hacked Quartz
Rostowrack China Clay Pit, St Austell
Wheal Trelawny, Menheniot
Wheal Ludcott, St Ive
East Pool Mine, Illogan
QUARTZ Amethyst
SiO2.
Wheal Bellon, St Just
Wheal Uny, Redruth
Wheal Jane, Kea
Rostowrack China Clay Pit, St Austell
Goonbarrow China Clay Pit, St Austell
Wheal Buller, Redruth
QUARTZ Milky Quartz
SiO2.
"passim"QUARTZ "Tiger Eye"
SiO2.
P.J.Golley specimen, collected by V.A.D.Holyer
Kynance Cove, The Lizard
QUARTZ Orange Quartz
SiO2.
Wheal Buller, Redruth
QUARTZ "Floatstone"
SiO2.
Wheal Alfred, Phillack
Pednandrea Mine, Redruth
Relistian Mine, Gwinear
QUARTZ Babel Quartz
SiO2.

Great Work Mine, Breage
QUARTZ
Cryptocrystalline (chalcedony, jasper, flint)
Trevascus Mine, Gwinear
Pednandrea Mine, Redruth
Botallack Mine, St Just
Wheal Maudlin, Lanlivery
Penlee Quarry, Newlyn
Marazion Beach Portreath Beach
Loe Bar, Helston
Rinsey Head, Breage
North Roskear Mine, Camborne (including "Haytorite")RAMMELSBERGITE
NiAs2.
R.J.Davis, M.H.Hey, andA.W.G. Kingsbury (1965) Mineral.Mag. 35, 72-83.
South Terras Mine, St Stephen-in-Brannel
Roskrow United Mine, Ponsanooth
Rashleighite, an intermediate between turquoise and chalcosiderite.
M.H.Hey, F.A.Bannister and A.Russell (1938) Mineral.Mag. 25, 54.
Castle-an-Dinas Mine, St Columb Major TL
Bunny Mine, St.Austell TL
Gunheath China Clay Pit, St Austell
REALGARAsS.
A.Russell (1944) Mineral.Mag. 27, 3.
Burraton Coombe Quarry, Saltash BI
Redondite, messbach-type variscite, q. v..
REICHENBACHITE
Cu 5(PO4)2(OH)4.
8SLBM R.S.W.Braithwaite and G.Ryback, Mineral.Mag. in press. Old
Gunnislake Mine, Calstock BI
Restormelite
Aluminosilicate of Na and K. A.H.Church (1870) J.Chem.Soc. 23, 165.
Hey 3, 591. A doubtful or unidentified mineral.
Restormel Royal Iron Mine, Lanlivery TT
RHABDOPHANE(Ce,La)PO4.H 2O.
W.G.Lettsom (1878) Zeits.Kryst.Min. 3,191.
also (1878) Phil.Mag. 13, 527.
Cornwall TL
RHABDOPHANE-(Nd)(La,Ce)PO4.H2O.
J.F.W.Bowles and G.E.Morgan (1984) Mineral.Mag. 48,146.
Fowey Consols Mine, TywardreathRHODOCHROSITE
MnCO 3.
J.H.Collins (1871) pt.2, 41. (diallogite)
Botallack Mine, St Just
Wheal Owles, St Just
Levant Mine, St. Just
Treburland Manganese Mine, Altarnun
Lidcott Mine, Laneast
Simm's Lode, Geevor Mine, St.Just
Trebarwith Strand, Tintagel

RHODONITE
Mn2+SiO3.
J.Sowerby (1817) British Min. Vol. 5, 253-4. p1.536.
Treburland Manganese Mine, Altarnun
Pencrebar Mine, Callington
Lidcott Mine, Laneast
Atway Mine, Launceston
Greystone Wood Mine, Lezant
Tor Wood Mine, Pillaton
Greystone Quarry, Lezant
RIEBECKITENa2(Fe2+,Mg)Fe3+2SigO22(OH)2.
A.Hall (1982) Mineral.Mag. 45, 257.
Pendennis Dyke, Falmouth
Ripidolite, variety of clinochlore (q.v.), ferroan clinochlore.
ROCKBRIDGETTE(Fe 2+ Mn 2+)Fe3+4(PO4)3(OH)5.
A.W.G.Kingsbury (1957) Mineral.Mag. 31,429.
Phoenix United Mines, Linkinhome BI
Gravel Hill Mine, Perranzabuloe
Rockbridgeite / Frondelite
J.R.Hawkes et al,(1987) British Geological Survey Report 19, 4. (see sheet 3.) Alsoon M.Grigg specimen, N.J.Elton EDX and XRD.(Predominant specie not noted).
Gunheath China Clay Pit, St.Austell
ROMÉITE(Ca,Fe,Mn,Na)2(Sb,Ti)2O6(O,OH,F)
B.Gamble specimen, X-rd. BM(NH) 1994 - a member of the stibiconiteromditegroup.
Hingston Down Quarry, Calstock
ROQUESITECuInS2.
A.J.Criddle and C.D.Stanley eds.(1986) The Quantitative Data File for Ore
Minerals, 2nd issue. BM(NH) Lond. The first indium mineral from the British Isles.
Geevor Mine, St.Just BI
ROSASITE(Cu,Zn)2CO 3(OH)2.
A.W.G.Kingsbury and J.Hartley Mineral.Mag. 31, 501-2.
Penberthy Croft Mine, St Hilary
ROSCHERITE
Ca(Mn,Fe2+)2Be3(PO4)3(OH)3.2H2O.
A.M.Clark, E.E.Fejer, A.G.Couper, O.von Knorring, R.W.Turner andR.W.Barstow (1983) Mineral Mag. 47, 81-3.
Gunnislake Clitters Mine, Calstock BI
Rubellite, variety of tourmaline of a pink colour, substantially free from Fe or
Mg (Hey 3), variety of elbaite (EM). J.Purser (1974) RIC Library, Truro.
Wheal Harmony, Redruth
RUSSELLITE
Bi2WO6.
M.H.Hey and F.A.Bannister (with note by A.Russell) (1938) Mineral Mag. 25,
41-55.
Castle-an-Dinas Mine, St Columb TL
Hingston Down Quarry, Calstock
RUTHERFORDINE(UO2)CO3.
C.C.James (1947) TRGSC. 17, 256-68.
South Terras Mine, St Stephen-in-Brannel
RUTILE
TiO2.
J.H.Collins (1871) pt.2, 89. Lanterdan Quarry, Tintagel (var. Sagenite q.v.)
Lanterden Quarry, Tintagel
Delabole Slate Quarry
Dinas Head, Padstow
Greystone Quarry, Lezant

SADANAGAITE(K,Na)Ca2(Fe 2+,Mg,A1,Fe3+,Ti)5(Si,AI) 8O22(OH)2.
G. Van Marcke de Lummen (1985) Proc. Ussher Soc. 6, 211-17.
Botallack Mine, St-Just B1SAFFLORITE(Co,Fe)As2.
1820 Specimen X-rd by Dr.S.Weiss, Munich University
Wheal Spamon, Redruth
Sagenite, variety of rutile (q.v.), name given to complex reticulated twinned
intergrowths of acicular rutile crystals.
SALÉEITE
Mg(UO 2)2(PO4)2,10H2O.
Confirmed by X-rd on P.J.Golley specimen from South Terras Mine by D.Atkin,
Institute of Geological Sciences 17/3/70. Listed in 8SLBM on other specimens as
incompletely characterised.
South Terras Mine, St Stephen-in-Brannel BI
Wheal Edward, St Just
Wheal Basset, Illogan
Roughtor Consols, St Clether
SANIDINE
KA1Si3O8.
C.E.Tilley (1959) Geol.Mag. 96, 503-4.
Wolf Rock
Sahlite, synonym of salite, Fe bearing variety of diopside q.v..
SAPONITE
Ca0.25(Mg,Fe)3(Si,Al)4O10(OH)2 .nH2O.
W.Borlase (1758) Nat.Hist.Comwall. (Soap Stone)
The Lizard BI
Kynance Cove
Scapolite - Wernerite ?
J.Robson (1964) RGSC 150th Annv. 124.
Tater-Du greenstones with zoisite and axinite.
SCHEELITE
CaWO4.
W.Phillips (1819) 191-2.
Pengelley Croft Mine, Breage BI
Wheal Cock, St Just
Levant Mine, St.Just
Carrick Dhu Mine, St Ives
Wheal Maudlin, Lanlivery
Penhale Mine, St Cleer

Old Gunnislake Mine, Calstock
Hingston Down Quarry, Calstock
Hawkswood Mine, North Hill
Treburland Mine, Altamun
SCHMIEDERTTE
Pb2Cu2(Se 4+O3)Se6+O4)(OH)4.
N. Carruth Dealers List. Aug-Sept. 1991 (BM(NH) confirmed). Russell Soc.
Newsletter (SW) No. 6, 17.
Greystone Quarry, Lezant
SCHORLNaFe2+3A16(BO3)3Si6O18(OH)4.
W.Phillips (1819) 96.
Logan Rock, Land's End
Roche Rock, St.Dennis
and throughout the Cornish granites.
SCHRÖCKINGERITE
NaCa3(UO2)(CO3)3(SO4)F.10H2O.
N.J.Elton and J.J.Hooper (1992) Mineral.Mag. 56,124-25.
No. 17 level, Peeth Lode, Geevor Mine, St.Just BISchrőtterite, variety of allophane much richer in Al than normal allophane
SCHULENBERGITE(Cu,Zn)7(SO4,CO3)2(OH)10.3H2O
8SLBM BM(NH) identification, J.Betterton specimen.
Prince of Wales Mine, Calstock
SCOLECITE
CaA12Si 3O10.3H2O.
R.W. Barstow specimen, Plymouth Museum. Specimen in P.Golley collection.
Dean Quarry, St Keveme
SCORODITE
Fe 3+ AsO4.2H2O.
W.Phillips (1819) 239-10. (martial arseniate of copper)
Carharrack Mine, Gwennap
Wheal Muttrell, Gwennap
Wheal Unity, Gwennap
Wheal Gorland, Gwennap
Tincroft Mine, Illogan
Crinnis Mine, St AustellSouth Terras Mine, St Stephen-in-Brannel
Hingston Down Consols and Quarry, Calstock
Penberthy Croft Mine, St Hilary
Old Gunnislake Mine, Calstock
Gunheath China Clay Pit, St.AustellSEGNITITE
PbFe3H(AsO4)2(OH)6.
X-rd identification, M.Merry specimen, by .S.Weiss, Munich University 1993.
Penberthy Croft Mine,St Hilary BI
SEMSEYITE
Pb9Sb 8S21.
Sir A. Russell mss 1949 BM(NH), also B.V.Cooper specimen in P.J.Golleycollection.
Wheal Boys, Endellion
SENARMONTITE
Sb2O3.
T.Davies (1867) Geol.Mag. 4, 192. (visual identification)
Endellion. BI
Treore Mine, St Teath
Port Quin Mine, St.Endellion
Bodannon Mine, Endellion
Bounds Cliff, Endellion
East Wheal Leigh, Pillaton
SEPIOLITE
Mg4Si6O15(OH)2.6H2O.
S.Caillere (1949) Bull.Soc.Franc.Min.Cryst. Vol.72, 5. also S.Caillère andS.Hénin (1949) Nature 163, 962.
Kennack Sands, The Lizard
SERPIERTTE
Ca(Cu,Zn)4(SO4)2(OH)6.3H2O.
C. Sparrow pers.comm.
Penberthy Croft Mine, St.Hilary
SHATTUCKITE
Cu5(SiO3)4(OH)2
Reported with ceruléite.
Wheal Maid Decline, Gwennap
SIDERITE
FeCO3.
W.Phillips (1819) 178-9. (Spathose iron) + figs
Wheal Maudlin, Lanlivery
Great Onslow Consols, St Breward
Crinnis Mine, St Austell
Fowey Consols, Tywardreath
Dolcoath Mine, Camborne
Tincroft Mine, IIlogan
South Crofty Mine, Illogan
Strangles Beach, St Gennys
Old Treburgett Mine, St Teath
Trewethen Mine, St Kew

Wheal Drea, St.Just
Greystone Quarry Lezant
SIDERONATRITE
Na2Fe 3+(SO4)2OH.3H2O
8SLBM BM(NH) identification 1985. R.E.Starkey specimen.
Trerubies Cliff, near Delabole
SILLIMANITE
Al2SiO5.
C.E.Tilley (1937) Geo.Mag. 74,14 (in schist), 143 (in granite).
Polkemogo, The Lizard
Cheesewring Quarry, Linkinhorne
Pistil Ogo Cove, The Lizard
SILVERAg.
M.Hitchens (1801) Phil.Trans.Roy.Soc.Lond. 91, 159-64., also Phil.Mag. 10, 7780.
Levant Mine, St. Just
Botallack Mine, St Just
Wheal Herland, Gwinear
Wheal Alfred, Phillack
Wheal Ann, Phillack
Dolcoath Mine, Camborne
Wheal Mexico, Perranzabuloe
Crinnis Mine, St Austell
Wheal Ludcott, St Ive
Wheal Spamon, Redruth
Penberthy Croft Mine, St.Hilary
Wheal Duchy, Calstock
Wheal Maid Decline, Gwennap
SKUTTERUDITE(Co,Fe,Ni)As2-3
R.J.Davis, M.H.Hey and A.W.G.Kingsbury (1965) Mineral.Mag. 35,72-83.
Wheal Herland, Gwinear
Roskrow United Mine, Ponsanooth
Wheal Spamon, Redruth
East Pool Mine, Illogan
Dolcoath Mine, Camborne
St Austell Consols
Polgooth Mine, St Austell
Wheal Trugo, St ColumbSouth Terras Mine, St Stephen-in-Brannel
Wheal Ann, Phillack (RIC spec.) (Chloanthite)
St Austell Consols (Chloanthite)
Fowey Consols, Tywardreath (Chloanthite)
Dolcoath Mine, Camborne (Chloanthite)Smaltite, arsenic deficient variety of skutterudite q.v..
SMITHSONITE
ZnCO3.
J.H.Collins (1871) Pt.2 21. (calamine)
Fowey Consols, Tywardreath
Wheal Mary, Lelant
Perran Great St George Mine, Perranzabuloe
Greystone Quarry, Lezant
SODIUM-ZIPPEITE
Na4(UO2)6(SO4)3(OH)10.4H2O
8SLBM N.J.Elton and J.J.Hooper (1993) Mineral.Mag. 57, 352-54. All
specimens of 'zippeite' examined by the above authors so far have proved to be
sodium zippeite.
Geevor Mine, St.Just BI
SPANGOLITECu 6AlSO4(OH)12C1.3H2O.
H.A. Miers (1893) Mineral -Mag. 10, 274.
Wheal Gorland, Gwennap BI
West Caradon Mine, St.Cleer
Spathose iron, synonym of siderite q.v..
SPESSARTINE
Mn 3A12(SiO4)3.
A.Russell (1946) Mineral Mag. 27, 22135.
Treburland Manganese Mine, Altarnun
SPHALERITE(Zn,Fe)S.
M.H.Klaproth (1778) 31.
Wheal Jane, Kea
Wheal Boys, Endellion
Greystone Quarry, Lezant
Trevaunance Mine, St Agnes
Fowey Consols Mine, Tywardreath (cadmiferous - Przibramite)
Wheal Brothers, Calstock
Wheal Rose, Sithney
Wheal Penrose, Sithney
Botallack Mine, St Just
Wheal Alfred, Phillack
Great Wheal Chiverton, Perranzabuloe (Marmatite)
Wheat Jane, Kea (Marmatite)
Sphene, synonym of titanite q.v..

SPINEL
MgAl2O4.
C.E.Tilley (1935) Mineral.Mag. 24, 181-202.
Kenidjack, St Just
STANNITE
Cu2FeSnS4.
M.H.Klaproth (1787) Obs.Min.Chem.Hist.Fossils. Cwll. 21-3.
Wheal Rock, St Agnes TL
Botallack Mine, St Just
Carn Brea Mine, Illogan
East Pool Mine, Illogan
Wheal Jane, Kea
Stenna Gwynn Mine, St Stephen-in-Brannel
Bunny Mine, St Austell
Mulberry Mine, Lanivet
Holmbush Mine, Stokeclimsland
Wheal Primrose, St Agnes
Killifreth Mine, Kenwyn
Hingston Down Quarry, Calstock
STANNOIDITE
Cus(Fe,Zn)3Sn 2S12.
D.A.C.Manning (1983) Proc. Ussher Soc. 5,411-16.
Gunheath China Clay Pit, St Austell BI
St. Michael's Mount
Cligga Head Mine, Perranzabuloe
STAUROLITE(Fe2+Mg,Zn)2A19(Si,Al)4O22(OH)2.
Tilley (1937) Geol.Mag. 74, 300-9.
Pistil Ogo Cove, The Lizard
STEPHANITEAg5SbS4.
T.Davies (1866) Geol.Mag. 3, 432.
Wheal Ludcott, St Ive BI
Wheal Boys, St.Endellion
Wheal Newton, Calstock
STEVENSITE(Ca,Na)x Mg3Si 4O10(OH)2
Author not named,; (1994) Sept., Russell Soc. Newsletter, , 25, 16. X-rd,
J.J.Hooper. Pseudomorphous after pectolite.
Dean Quarry, St.Keverne Trevassack. The Lizard
STIBICONITE
Sb 3+Sb5+206(OH).
A.Russell (1949) mss. BM(NH)
Wheal Boys, Endellion

Wheal Prosper, St Ewe
Trenute Mine, Lezant
Trebullet Mine, Lezant
Wheal Leigh, Pillaton
Hatt Trial, Botus Fleming
Cutlinwith Farm, Landrake see also romtéite.
STIBNITE
Sb 2S3.
N.Grew (1681) Cat.Roy.Soc.Lond. 334.
Wheal Boys, Endellion
Poltreworgey Mine, Endellion
Dizzard Mine, Poundstock
Wheal Prosper, St Ewe
Wheal Leigh, Pillaton
Hatt Trial, Botus Fleming
Tredinnick Mine, St Erney
Cutlinwith Farm, Landrake
Trenute Mine, Lezant
Trebullet Mine, Lezant
STILBITE
NaCa2A15Si13O36.14H2O.
J.Carne (1822) TRGSC 2, 310.
The cliffs between Wheal Cock and the Crowns Rock, St Just
Dean Quarry, St Keverne
Colcerrow Quarry, Luxulyan
Parc Bean Cove, Mullion
STILPNOMELANE
K(Fe2+,Mg,Fe3+)8(Si,AI)12(O,OH)27.
D.H.Green (1964 ) RGSC 150th Annv. 99.
Mullion Island Cove, Mullion
STOKESITE
CaSnSi3O9.2H2O.
A. Hutchinson (1899) Phil.Mag., sec.5, 48,480.
Roscommon Cliff, St Just TL
Halvosso Quarry, Longdowns
STOLZITE
PbWO4.
C.Jewson specimen collected Nov. 1993. X-rd D.I.Green Manchester
University Museum.
Hingston Downs Quarry, Calstock
STRASHIIMIRITE
Cus(AsO 4)4(OH)4.5H2).
8SLBM BM(NH) identification 1985, D.Lloyd specimen.
Wheal Gorland, Gwennap BI

Wheal Unity, Gwennap
STRENGITE
Fe 3+PO 4.2H2O.
8SLBM BM(NH) specimens collected by A.G.W.Kingsbury and exhibited at the
Min.Soc. meeting in 1962, Mineral.Mag., 33, Ixiv.
Phoenix United Mines, Linkinhorne BI
Gravel Hill Mine, Perranzabuloe
STRUNZITE
Mn 2+Fe 3+2(PO4)2(OH)2 .8H2O.
8SLBM BM(NH) identification 198697, M.Merry and C.Sparrow specimens.
Gravel Hill Mine, Perranzabuloe BISTRÜVERITE(Ti,Ta,Fe3+) O2
pers. comm. C. Sparrow reported BM(NH) identification
Tremearne Pegmatite, Breage
SULPHURS.
W.Borlase (1758) Native in a mass of antimony from a mine in St. Kew Parish'
J.H.Collins (1871) pt.2, 99.
Carnon Valley
Lambriggan Mine, Perranzabuloe
Port Isaac Cliffs
Gravel Hill Mine, Perranzabuloe
Pentire Glaze Mine, St.Minver
SVANBERGITESrAI3PO 4SO 4(OH)6.
A.W.G.Kingsbury (1964) RGSC 150th Annvs. Vol. 249.
Wheal Coates, St Agnes BI

TALC
Mg3Si4O10(OH)2.
W.Phillips (1819) 92P
Pentreath Beach, The Lizard
Kynance Cove, The Lizard
Devil's Frying-pan, The Lizard
Kennack, The Lizard
Tallingite, discredited species, see A.W.G.Kingsbury (1950) Mineral Mag. 29,
280-6. Established that tallingite and connellite were the same species.
Tavistockite, discredited species, see P.G.Embrey and E.E.Fejer (1969) Mineral
Mag., 37, 123-7. Proved to be a mixture of kaolin and carbonate fluorapatite(q.v.). Stenna Gwyn 'tavistockite' is wavellite.
TANTALITE
Fe +2Ta2O6
J.R.Hawkes et al,(1987) British Geological Survey Report 19, 4. (see sheet 3.)
Also on M.Grigg specimen, N.J.Elton EDX and XRD.
Gunheath China Clay Pit, St.Austell
TENNANTITE(Cu,Fe)12As4S13.
W.Phillips (1819) Q.J.Lit.Sci.Arts, 7, 95.
Cornwall TL
Dolcoath Mine, Camborne
North Roskear Mine, Camborne
Cook's Kitchen Mine, Illogan
Tincroft Mine, Illogan
Wheal Jewell, Gwennap
Tresavean Mine, Gwennap
Trevascus Mine, Gwinear
Relistian Mine, Gwinear
Carn Brea Mine, Illogan
Wheal Jane, Kea
Levant Mine, St.Just
Geevor Mine, St.Just
Hingston Down Quarry, Calstock
TENORITE
CuO.
W.Phillips (1819) 230. (black copper)
Wheal Trefusis, Redruth
Botallack Mine, St Just
Great Wheal Fortune, Breage
Relistian Mine, Gwinear
Wheal Gorland, Gwennap
Ting-Tang Mine, Gwennap
Dolcoath Mine, Camborne
East Crinnis Mine, St AustellFowey Consols Mine, Tywardreath
Phoenix United Mines, Linkinhorne
Old Gunnislake Mine, Calstock
TEPHROITE
Mn 2+2SiO4.
A.Russell (1946) Mineral.Mag. 27, 221-35.
Treburland Manganese Mine, Altamun
TETRAHEDRITE(Cu,Fe)12Sb4S13.
W.G.Maton (1797) Obs.Nat.Hist.Westn.Counties Engld. 1, 245. (Fahlore)
Herodsfoot Mine, Lanreath
Poldice Mine, Gwennap
Crinnis Mine, St Austell
Trevascus Mine, Gwinear
Botallack Mine, St Just
Levant Mine, St.Just
Tresavean Mine, Gwennap
Padstow Consols
Wheal Anna Maria, Constantine
Trelill Quarry, St Kew
Pengenna Mine, St Kew
Tetrahedrite, argentian , see freibergite
Thuringite, a variety of chamosite (q.v.), ferrian chamosite.
TIN
Sn
R.D.Penhallurick (1986) Tin in Antiquity 35-36.
The only known specimen of tin from Cornwall is No. 100 in the copper ores
section of the Rashleigh collection, RIC, Truro. It contains both tin metal and native
copper, however it is doubted whether the tin is of natural occurrence.
Killifreth Mine, Kenwyn
Titanaugite variety of augite (q.v.), titanian augite, occasionally Al may be absent.
TITANITE
CaTiSiO 5.
N.J. Jackson (1974) Proc. Ussher Soc. 3,186-8.
Grylls Bunny, Botallack, St. Just
Land's End Greenstone
Trelissick Dyke, Falmouth
Pendennis Dyke, Falmouth
Botallack (stannian)
Titanomagnetite variety of magnetite (q.v.), titaniferous magnetite.

TOPAZ
Al2SiO4(F,OH)2.
P.Rashleigh (1797) Spec. of Brit. Mins. select. from the Cabinet of P.R. pt. 1, pl. 5,
fig.2.
St Michael's Mount
Cligga Head, Perranzabuloe
Tremearne Pegmatite, Breage
Great Wheal Fortune, Breage
Wheal Kitty, St Agnes
Polberro Mine, St Agnes
Castle-an-Dinas Mine, St Columb
Beam Mine, St Austell
Goonbarrow China Clay Pit, St Austell
Gunheath China Clay Pit, St Austell
St Mewan Mine, St Mewan
Belowda China Clay Pit, St.Austell
TORBERNITE
Most Cornish specimens are metatorbetnite q.v.
Cu(UO 2)2(PO4)2 .8-12H2O.
W.Gregor (1805) Phil.Trans.Roy.Soc.Lond. 95, 331-48.
Stenna Gwynn, St.Stephen
Wheal Edward, St Just
Gunheath China Clay Pit, St.Austell
Wheal Trenwith, St Ives
Wheal Basset, Illogan
Wheal Buller, Redruth
Wheal Gorland, Gwennap
Wheal Unity, Gwennap
Fowey Consols, Tywardreath
Blackpool China Clay Pit, St AustellSouth Terras Mine, St Stephen-in-Brannel
West Wheal Owles, St.Just
Tourmaline Previously a species, now a group name, the following locations arerecorded for tourmaline, and probably refer to the mineral schorl. See also thetourmaline group minerals and varieties Achroite, Dravite, Indicolite, Rubellite,
Schorl and Verdelite.
(Na,Ca)Li,Mg,Fe2+,Al)3(Al,Fe3+)6B3Si 6 O27 (O,OH,F)4.
W.Phillips (1819) 35-7.
Roscommon Cliff, St Just
Botallack Mine, St Just
Ding-Dong Mine, Madron
St Michael's Mount
Great Work Mine, Breage
Tremearne Pegmatite, Breage
Luxulyan (in Luxullianite)
Gunheath Chin Clay Pit, St Austell
Carclaze China Clay Pit, St Austell
Dorothy China Clay Pit, St AustellTREMOLITE
Ca2(Mg,Fe2+)5SiOgO22(OH)2.
W.Phillips (1819) 49-50.
Goonhilly, The Lizard Mullion, The Lizard
Predannack Head, The Lizard
Kynance Cove, The Lizard
Duporth Beach, St Austell
TRIDYMITE
SiO2.
H.Fox (1895) TRGSC 11, 687-724.
In rhyolitic pumice in the metamorphic aureole of granite (Falmouth)
Dinas Head, Padstow
TRIPHYLITE
LiFe2+PO4.
M.Stone and M.C.George (1983) Proc. Ussher Soc. 5, 428-31.
Tremeame Pegmatite, Breage BI
TRIPLITE(Mn+2,Fe+2,Mg,Ca)2(PO4)(F,OH).
M.C.George, M.Stone, E.E.Fejer, and R.F. Symes (1981) Mineral Mag. 44, 236-8.
Tremearne Pegmatite, Breage BI
TRIPLOIDITE(Mn 2+,Fe 2+)2PO4(F,OH).
A.H.Clark and A.G.Couper (1979) Mineral.Mag. 43, 179-780.
Wheal Owles, St Just BI
TRISTRAMITE(Ca,U4+,Fe3+)(PO4,SO4).2H 2O.
D.Atkin, I.R.Basham and J.F.W.Bowles (1983) Mineral.Mag. 47, 393-6.
Wheal Trewavas, Breage TL
Trequeen
Wheal Buller, Redruth
Wheal Damsel, Gwennap
Wheal Providence, Lelant
Wheal Alice, Lelant
TRÖGERITE(UO2) 3(AsO4) 2.12H2O.
J.Robson (1954) TRGSC. 18, (for 1952) 406-10. Listed without source.
South Terras Mine, St Stephen-in-Brannel BI
Tungstic Ochre
Synonym of tungstite and ferritungstite. A. Russell. Mineral Mag. 25, 1938.
East Pool Mine, Illogan
South Crofty Mine, Illogan

Poldice Mine, Gwennap
Tolvadden Mine, Illogan
TURQUOISE
CuA16(PO4)4(OH)8.5H2O.
A.Russell (1952) Mineral Mag. 29, 909-12.
Gunheath China Clay Pit, St Austell
Castle-an-Dinas Mine, St Columb Major
Bunny Mine, St.Austell
Phoenix United Mines, (Stowe's Section), Linkinhorne - "henwoodite"
TYROLITE
CaCu5(AsO 4)2CO3(OH)4.6H2O.
BM(NH) X-rd 1984, confirmed 24/10/84 by J.Fuller.
Old Gunnislake Mine, Calstock
Penberthy Croft Mine, St Hilary
Carn Brea Mine, Illogan
TYUYAMUNITE
Ca(UO 2)2V 2O 8.5-8H2)
N.J.Elton and J.J.Hooper (1994) J.Russell Soc. 5, 2, 114-5.
X-rd BM(NH)9053F and energydispersive X-ray, occurs with zeunerite anduranophane.
Cargodna Section, West Wheal Owles, St.Just BI

Unnamed - hydrated uranyl arsenate
A.G.Damley, T.H.English, O.Sprake, E.R.Preece and D.Avery (1965) Mineral.Mag.
34, 167. (Al analogue of novácekite)
Wheal Bray, Altarnun.
Unnamed copper analogue of canfleldite.
Cu8SnS6.
D.H.M.Alderton (1991) Jour.Russell Soc. 4, pt. 1, 17-20. (analysis 16).
Gunheath China Clay Pit, St.Austell
Unnamed copper aluminium phosphate
S. Weiss (1987) Lapis vol. 12, 3, 26.
South Caradon Mine Adit, St.Cleer
Unnamed Iron sulphide (fibrous)
An incompletely characterised mineral. A.H.Clark (1970) Am.Min. 55, 283-4.
Pol Cornick, Mullion, The Lizard (occurs with valleriite)
URANINITE
UO2.
W.Phillips (1819) 201.
Wheal Edward, St Just
Botallack Mine, St Just
Geevor Mine, St.Just
Wheal Trenwith, St Ives
Dolcoath Mine, Camborne
East Pool Mine, Illogan
Roskrow United Mine, Ponsanooth
Wheal Bray, Altamun
South Terras Mine, St Stephen-in-Brannel
Old Gunnislake Mine, Calstock
URANOPHANE
Ca(UO 2)2[SiO 3(OH)]2.5H2O
N.Elton confirmed occurrence at West Wheal Owles in pers. comm. to the authors.
P.Oldfield specimen,
Wheal Edward, BM(NH) X-rd near uranophane (+).
West Wheal Owles, St.Just
Wheal Edward, St Just
URANOPILITE(UO2)6SO 4(OH)10.12H2O.
Chemical analysis by Novdcek, 1935, quoted by C.Palache, H.Berman, andC.Frondel (1951) Dana's Syst.Min.,7th edn., vol. 2, 582.
C.Frondel (1952) Am.Min. 37, Cornwall BI
Wheal Owles, St.Just
Wheal Edward, St Just
Geevor Mine, St. Just (No. 17 Level, Peeth Lode)URANOSPATHITE
HAl(UO2)4(PO4)4.40H2O.
A.F. Hallimond(l 915) Mineral.Mag. 17,230.
Wheal Basset, Illogan TL
URANOSPINTTE
Visually identified specimens from Wheal Edward, St. Just and Wheal Basset,
Illogan analysed by X-rd. by N.J. Elton have proved to be metatorbernite

VALENTINITE
Sb 2O3.
A.W.G.Kingsbury (1957) Mineral.Mag. 31,499.
Trevinnick Mine, St.Kew
Wheal Leigh, Pillaton
Port Quin Beach, Endellion
Bodannon Mine, Endellion
Treore Mine, St Teath
VALLERIITE
4(Fe,Cu)S.3(Mg,Al)(OH)2.
A.H.Clark (1970) Am.Min. 55, 283-4.
Pol Cornick, Mullion, The Lizard
The Rill, Kynance Cliff, The Lizard
VANADINITE
Pb 5(VO4)3CI.
S.Camm and M.Merry (1991) Lapis 16, 9, 38.
Penberthy Croft Mine, St Hilary
VANDENBRANDEITECuUO2(OH)4.
R.W.Barstow specimen, P.Golley collection.
Wheal Edward, St Just
VARISCITE
AlPO4.2H2O.
R.W.Barstow (1982) Mineral.Mag. 46, 512.
Gunheath China Clay Pit, St Austell
Hensbarrow China Clay Pit, St Austell
Treore Mine, St Teath (Redondite, q.v.)
VARLAMOFFITE(Hey 3, considers this a variety of cassiterite, although other authorities do notagree.)(Sn,Fe)(O,OH)2.
A.Russell and E.A.Vincent (1952) Mineral.Mag. 29, 817-26.(the mineral, now
known as varlamoffite, was first noticed by Russell at Cligga Head Mine,
Perranzabuloe in 1906, and mentioned in a paper read to Mineral.Soc. 1937)
Cligga Mine, Perranzabuloe BI
Penberthy Croft Mine, St Hilary
Wheal Rock, St Agnes
Bunny Mine, St Austell
Mulberry Mine, Lanivet
Kit Hill Mine, Stokeclimsland
Hingston Down Quarry, Calstock
Gunheath China Clay Pit, St.AustellVerdelite, variety of tourmaline of a green colour.
J.H.Collins (1911) JRIC, 18, 159-60.
Wheal Unity, Gwennap
Dorothy China Clay Pit, St.Austell
VESUVIANITE
Ca10(Mg,Fe)2A14 SiO34(OH)4.
J.Robson (1948)TRGSC. 17, 466.48
Treburland Mn. Mine, Altarnun
Botallack
VIVIANITE
Fe 2+3(PO4)2 .8H2O.
A.G.Werner (1817) Letztes MineralSyst., 41.
St.Agnes, Cornwall TL (almost certainly Wheal Kine)
Wheal Kine, St Agnes
Parknoweth Mine, St.Just
Botallack Mine, St Just
Wheal Edward, St Just
Wheal Owles, St Just
Wheal Jane, Kea
Wheal Falmouth, Kea
Wheal Gorland, Gwennap
VOCHTENITE(Fe 2+,Mg)Fe3+[(UO2)(PO4)] 4 .12-13H2O.
P.C.Zwaan, C.E.S.Arps and E.de Grave (1989) Mineral.Mag. 53, 473-8.
Wheal Basset, Illogan TL
Voltzite
E.S.Dana (1868) 5th edn. 50. C.Fondel (1967) Amer.Min. 52, 617. Shown to be a
mixture of sphalerite or wurtzite and an organometallic compound of zinc.
Cornwall, probably at Redruth.

WAVELLITE
A13(PO4)2(OH,F)3.5H2O.
W.Gregor (1805) Phil.Trans.Roy.Soc.Lond. 95, 331-48.
Stenna Gwynn Mine, St Stephen-in-Brannel
Castle-an-Dinas Mine, St Columb
Gunheath China Clay Pit, St Austell
Old Beam Mine, Bugle
Wheal Remfry China Clay Pit, St.Austell
WAYLANDITE(Bi,Ca)Al3[(P,Si)O4]2,(OH)6.
A.M.Clark, A.G.Couper, P.G.Embrey and E.E.Fejer (1986) Mineral.Mag. 50,
731-3.
Restormel Royal Iron Mine, Lanlivery BI
Phoenix United Mines (Stowe's section), Linkinhorne (a mineral nearwaylandite)
Wheal Owles, St Just
Gunheath China Clay Pit, St.Austell
WEILERITE
BaA13AsO4SO4(OH)6.
R.W.Barstow collected BM(NH) specimen BM 1975,42, X-rd identification'near weilerite', requires chemical examination. Wheal Unity, Gwennap
WHITMOREITE
Fe 2+ Fe 3+ 2(PO4)2(OH)2 .4H2O.
X-rd identification, M.Price Oxford University Museum 4/8/87 M.Grigg spec.
Gravel Hill Mine, Perranzabuloe BI
WICKMANITE
MnSn(OH)6.
N.Hubbard (1989) Mineral.Mag. 48, 388.
Wheal Cock Zawn, St Just BI
WITTICHENITE
Cu3BiS3
C.Scheding specimen identified by P.Tandy BM(NH).
Geevor Mine, St.Just
WOLFRAMITE(Mn,Fe)WO4.
W.Phillips (1819) 190-1.
An intermediate member of the hubernite-ferberite. series, frequently used as agroup name,Hey 3. Cornish wolframite is probably Ferberite q.v..
St Michael's Mount
Wheal Fanny, Redruth
Cligga Mine, Perranzabuloe
Wheal Jane, Kea
Drakewalls Mine, Calstock
East Pool Mine, Illogan

Pednandrea Mine, Redruth
Dolcoath Mine, Camborne
Cook's Kitchen Mine, Illogan
Goonbarrow China Clay Pit, St.Austell
pseudomorphous after scheelite at Wheal Maudlin Mine, Lanlivery and recently
at Hingston Down Quarry, Calstock
WOLLASTONITE
CaSiO 3.
J.H.Collins (1911) JRIC, 18, 460. 'recorded by Mr. A.Russell in greenstone withblende'.
North Roskear Mine, Camborne
Clicker Tor Quarry, Menheniot
Treburland Manganese Mine, Altarnun Bodmin
Wheal Mary, Lanivet
WOODWARDITE
Cu 4A12SO 4(OH)12 .2-4112O.
A.H.Church (1866) J.Chem.Soc. 19, 131.
Cornwall TL
South Caradon Mine, St Cleer
Wheal Cock, St Just
Wheal Hazard, St.Just
WROEWOLFEITE
Cu4SO 4(OH)6.2H2O.
R.W. Barstow (1983) Mineral.Mag. 47, 240-1.
Penberthy Croft Mine, St Hilary
East Gunnislake Mine, Calstock
WULFENITE
PbMoO4.
Oxford University X-rd 1992
Greystone Quarry, Lezant
Wheal Golden, Perranzabuloe
Garras Mine, St Erme
Redmoor Mine, Callington
Polzeath Consols, St.Minver
Wheal Mary Ann, Menheniot
WURTZITE(Zn,Fe)S.
J.Noelting (1887) [Inaug. Diss, Kiel, 21] (1890) Abstract in Z. Kryst. Min. 17, 220.
Liskeard
BI
Wheal Unity, St.Day BI
Gunheath China Clay Pit, St.Austell
Wheal Ellen, St.Agnes
Wheal Jane. Kea.

XANTHIOSITE
Ni3(AsO4)2.
R.J.Davis, M.H.Hey and
A. W.G.Kingsbury (1965) Mineral.Mag. 35, 72.
South Terras Mine, St Stephen-in-Brannel BI
XENOTIME-(Y)YPO 4.
N.L.Jefferies (1984) Proc. Ussher Soc. 6, 35-41. (in the accessory mineral
assemblage).
Carnmenellis granite, inclusions in biotite
In beach sand, Carbis Bay, St.Ives

ZEUNERITE
Cu(UO 2)2(AsO 4)2.10-16H2O.
C.C. James (1947) TRGSC. 256-268.
Wheal Gorland, Gwennap BI
South Terras Mine, St Stephen-in-Brannel
Roughtor Mine, St.Clether
Wheal Maid, Gwennap
Wheal Edward, St.Just
ZINKENITE
Pb9Sb22S42.
R.W.Barstow specimen in BM(NH) incompletely identified.
Poltreworgy Mine, St.Endellion
ZINNWALDITE
KLiFe2+A1(A1Si3)O10(F,OH)2.
F. Sandberger (1885) Unters. uber Erzange, Zweites Heft. 168-69.
(Protolithionite)
Hensbarrow Clay Pit, St.Austell (Protolithionite)
Great Work, St Just
Gunheath China Clay Pit, St Austell
ZIPPEITE
K4(UO2)6(SO4)3(OH)10.4H2O.
T.Robertson and H.G.Dines (1929) Mining Mag. Sept. 147-53.
Old Gunnislake Mine, CalstockSouth Terras Mine, St Stephen-in-Brannel
Carharrack Mine, St Day
Wheal Buller, Redruth
Wheal Edward, St.Just
ZIRCONZrSiO 4.
N.J. Jeffries (1984) Proc. Ussher Soc. 6, 35-41.
As a microscopic accessory in the Carnmenellis granite
Carbis Bay
Micro crystals in Delabole slate
ZOISITE
Ca2A13(SiO 4)3(OH).
J.Robson.(1948) TRGSC. 17. 466.
Warren's Quarry, Camelford
Tolpetherwin Quarry, South Petherwin
Dinas Head, Padstow
ZWIESELITE(Fe 2+,Mn2+)2PO4F.
8SLBM BM(NH) identification 1987, N.Talbot specimen.
Tremearne Pegmatite, Breage BI

Bitumens / Hydrocarbons
Anthracite
Average composition C 92-94%, H 34%, O 3-4.5%, N up to 1%. J.H.Collins(1871) Pt. 2, 35. (coal) Widemouth Bay
High Cliff, St Gennys
Pednandrea Mine, Redruth
Roscrow United Mine, Ponsanooth
Wheal Jane, Kea (found in thin joints in killas 1971)
Wheal Duchy & Peru, Perranzabuloe
Bitumens
Average composition C79-86%, H912%, S11/2-10%, J.H.Collins (1871) pt.2,
16-7.
Wheal Jewell, Gwennap
Wheal Unity, Gwennap
Carharrack Mine, St Day
North Treskerby Mine, Redruth
North Roskear Mine, Camborne
South Crofty Mine, Camborne
Poldice Mine, Gwennap
Cook's Kitchen Mine, Illogan
Uraniferous hydrocarbon R.K.Harrison and K.Taylor (1966) Bull. Geol.
Surv. 25,41-8.
Wheal Speed.