Eighth supplementary list of British Isles
minerals (English)
GEORGE RYBACK42 Bell Road, Sittingbourne, Kent ME10 4EB, England
AND
PETER C . T A N D Y

Department of Mineralogy, British Museum (Natural History), London SW7 5BD, England

T n E supplementary lists of British Isles minerals
record those minerals found in Great Britain,
Northern Ireland, and the Republic of Irelandthat are not included in Greg and Lettsom's
Manual (1858). Seven such lists have been
published to date:
First: Spencer, L. J. (1898) Rep. Br. Assoc.
Adv. Sci., 875-7.
Second: ldem (1931) Ibid., 378.
Third: Idem (1958) Mineral. Mag., 31,
787-806.
Fourth: Embrey, P. G. (1977), as appendix toreprinted edition of Greg and Lettsom (1858),
where the first three lists are also reprinted.
Fourth list reprinted in Mineral Mag., 42,169-77.
Fifth (Scottish): Livingstone, A. and Macpherson, H. G. (1983) Mineral. Mag., 47, 99-105.
Sixth (Welsh): Bevins, R. E. (1988) Ibid., 52,
121--4.
Seventh (Irish): Ryback, G., Nawaz, R., andFarley, E. (1988) Ibid., 52, 267-74.
The last three, together with the present English
list, represent a set equivalent to one of the earlier
lists, the faster pace of new discoveries dictating
the division into smaller regional lists. An occurrence qualifies for inclusion in this English list
only if it is both the first in the British Isles andfrom an English locality, although the practice ofmentioning, where appropriate, additional finds
in whatever region has been continued.
To keep the supplementary lists realisticallybrief, none of them routinely includes correctionsof or deletions from Greg and Lettsom's Manual(1858), nor new and perhaps more significant
occurrences of species already on record. (Amineral should not normally appear in more than
one list.) Nevertheless, the lists are useful inbringing together a great deal of scattered infor-

Mineralogical Magazine, June 1992, Vol. 56, pp. 261-275
Copyright the Mineralogical Society

mation and, although they deal mainly withpublished work, in recording some occurrencesthat may otherwise remain unpublished.
Greg and Lettsom's Manual (1858), now widely
available in its reprinted form, still remains the
only general reference work on British Isles
minerals. Its age limits its usefulness and also
perpetuates a somewhat antique image of thestate of regional mineralogy in these countries.
While a replacement for Greg and Lettsom's
Manual is not yet envisaged, the outlook forEnglish mineralogy has improved recently. The
classic minerals of Cornwall and Devon are
splendidly described by Embrey and Symes(1987), although their book does not aim tocatalogue all the minerals or localities in thesecounties. Young (1987) and Cooper and Stanley(1990) have dealt comprehensively with all the
known occurrences in the Lake District, and in
the Caldbeck Fells area within the Lake District,respectively, and these works should be consulted
for further details of any Lake District mineralmentioned in our list.
More than 850 species are now known from the
British Isles, and 580 or so from England. Of
these latter, about 116 are listed here as certain
new additions, together with a few interesting
varieties of species already recorded from the
British Isles; the remainder of the 144 entries
concerns occurrences that need further work or
are in some way doubtful. The list documents
over 170 published occurrences and 70 unpublished ones, and includes the following new
species: ashoverite, barstowite, ferrok~sterite,
sweetite, tristramite, and vochtenite.
'NHM' refers to the Natural History Museum(statutory name British Museum (Natural
History)). NHM identifications were by powder
X-ray diffraction unless otherwise stated.

262

G. RYBACK AND P. C. TANDY

Acknowledgements
We are grateful to C. Alabaster, D. Baker, R.E.
Bevins, R.S.W. Braithwaite, D.P. CIough, N.J.
Elton, J. Faithfull, J.G. Francis, N. Hubbard, V.
Holyer, A. Livingstone, S. Moreton, S. Rust, C.
Sparrow, R.E. Starkey, R.F. Symes, P. Wallace,
M. M. Wirth, and B. Young for supplying unpublishedmaterial and answering queries. We thank especially
C. J. Stanley for valuable comments and information.
P. Perroud kindly provided data on minerals collectedby A. de Hailer at Tynagh mine, Ireland, unpublishedexcept in newsletters (Bulletins d'information) of theSociet6 genevoise de minrralogie.

Akagangite[3-Fe3+O(OH,CI)

Tetragonal

Significant component of siderite-calcite-Fe
sulphide concretions being formed in reduced
intertidal marsh and sandflat sediments, Warham
Marshes, Norfolk (Pye, 1988). Cf. Greigite. As asecondary mineral at Gravel Hill mine, Perranzabuloe, Cornwall (C. Sparrow, pers. comm., 1991;
XRD by Monica Price, Oxford).

Alloclase(Co,Fe)AsS
Monoclinic
Overgrowths (<0.5 mm) on arsenopyrite in aquartz-chlorite-apatite vein at Scar Crag, Causey
Pike, near Keswick, Cumbria (Ixer et al., 1979).
Alluaudite
Monoclinic
NaCaFe 2+ (Mn,Fe 2+ ,Fe 3+ ,Mg)2(PO4) 3
A green alteration product of triphylite andpossibly triplite in pegmatite at Megiliggar Rocks,
Tremearne, Breage, Cornwall; XRD pattern andelectron microprobe analysis consistent withthose of alluaudite (Stone and George, 1983).
Alumohydrocalcite
Triclinic
CaA12(CO3)e(OH)4.3H20
White powdery patches in massive aliophaneveins in sandstone, old museum specimens from
Scarborough, North Yorkshire; and, associatedwith halloysite, as white powdery aggregates
between nodules of scarbroite in the infiU ofsolution pipes in sandstone, Weston Favell,
Northamptonshire (Ryback, 1988). With allophane, gibbsite, etc. in fissure-fill in limestone,
Woodleaze quarry, Tytherington, Avon (Alabaster, 1989a).
Andersonite
Trigonal
Na2Ca(UOz)(CO3)3.6H20
Small masses of intergrown bright yellow-green
pseudocubic crystals (-<3mm), with schr6ckingerite and gypsum, on walls of a level in Geevor

mine, St. Just, Cornwall (Elton and Hooper,
1992).
Andradite, stannoan
In tin-bearing skarns at Meldon, Devon (ElSharkawi and Dearman, 1966).

Antimony
Sb
Trigonal
From Pengenna mine, St. Kew, Cornwall;
Hannaford, near Barnstaple, Devon; and localities in the Lake District, Cumbria (Ixer andStanley, 1980). Inclusions (<5 ~tm) in galena at
nine localities in the Lake District (Stanley andVaughan, 1981). Rare isolated granules(-<20 ~tm) in quartz, Wet Swine Gill, Caldbeck
Fells, Cumbria (Fortey etal., 1984). [Also, as
rare inclusions in galena, at Tynagh mine, Co.
Galway, Eire (Clifford etal., 1986). Earlier
records are doubtful: Cornwall (First Supplementary List); Doigelly gold field, Gwynedd, Wales(Andrew, 1910).] Arsenian antimony forms microscopic inclusions in arsenic in pegmatite at
Meldon, Devon (von Knorring and Condliffe,
1984).
Argentopyrite (?) A g F e 2 S 3Orthorhombic
As euhedral crystals (<150 • 30 ~tm), twinned'stars' and aggregates of grains in an unusual AgNi-Co mineral assemblage at Tynebottom mine,near Alston, Cumbria; the dimorph sternbergite
occurs as grains within the argentopyrite aggregates (Ixer and Stanley, 1987). [The specimens, inthe Kingsbury Collection in NHM, may not befrom this locality (C. J. Stanley, pets. comm.,1990).]
Ashoverite
Zn(OH)2
Tetragonai
A new species, from an oxidised vein exposureat Milltown quarry, near Ashover, Derbyshire,
forming groups of colourless 0.5 mm squareplates on fluorite (Clark etal., 1988; Rust, 1991b).
Cf. Sweetite.
Barbosalite Fe2+Fe~+(PO4)2(OH)2 Monoclinic
Present in the cores of spherules of 'andrewsite'from Wheal Phoenix, Linkinhorne, Cornwall(Dunn, 1990). Cf. hentschelite.
Barium-pharmacosiderite
Tetragonal (?)
BaFe~+(AsO4)6(OH)8.14HzO
An electron microprobe analysis is given of a
specimen from Cornwall (Peacor and Dunn,
1985). [Also, as small yellow cubes, from Tynaghmine, Co. Galway, Eire; XRD and qualitative

MINERALS FROM THE BRITISH ISLESEDS analysis (A. de Haller specimen; P. Perroud, pers. comm., 1989).]
Barstowite
PB4(CO3)C12.H20
Monoclinic
A new species, forming aggregates of tiny
subparallel elongate colourless crystals, as analteration product of phosgenite in lead veins at
Bounds Cliff, St. Endellion, Cornwall (Stanley
et al., 1991).
Bayerite
AI(OH)3
Monoclinic
Detected by XRD within a nodule containing
gibbsite and quartz, from the infill of solution
pipes in Upper Chalk at Newhaven, East Sussex(Wilmot and Young, 1985).
Berthierite
FeSb2S4
Orthorhombic
Occurs in antimony ore at Wheal Prosper, St.
Ewe, Cornwall (NHM identification, 1982,
R. W. Barstow specimens). Also at Wet Swine
Gill, Caldbeck Fells, Cumbria, as robust prisms
up to 2mm long (Fortey etal., 1984), and at
Hogget Gill, Patterdale, Cumbria (A. Russell
specimen in NHM, see Young, 1987). [Earlier
records from Cornwall (Greg and Lettsom, 1858;
Collins, 1892) are uncertain.]

Cubic
Pb26AgmCuzaC162( OH)48.3H20
Rare tiny blue cubes, with cumengdite, pseudobol6ite, cerussite, phosgenite, malachite, etc.,from Tolcarne Beach, Newquay, Cornwall (V.
Holyer specimen in National Museum of Wales;
XRD identification, 1983, by P.A. Williams).
Also from Newporth Beach, near Falmouth,
Cornwall; presence of Ag confirmed by microprobe analysis (NHM identification, R. Cook
specimen).
Bolgite263

Carnotite (?)

Monoclinic
K2(UOz)zV2Os.3H20
Bright yellow earthy from South Terras mine,
St. Stephen-in-Brannel, Cornwall; identified byqualitative chemical tests (Gramaccioli, 1955).
[Unconfirmed. Francevillite occurs at this locality(Fourth Supplementary List).]Chalcoalumite
Monoclinic
CuAI4(SO4)(OH) 12-3H~O
Pale blue to almost colourless, radiating, withcopper, cuprite and brochantite, on childrenite,
at South Wheal Crebor (=New East Wheal
Russell), Tavistock, Devon (Braithwaite andCooper, 1982); cf. carbonate-cyanotrichite.
White spherules (-<0.05 ram) investing quartz
crystals, with malachite, mimetite, brochantite,and chrysocolla, at Penberthy Croft mine, St.
Hilary, Cornwall (NHM identification, 1985, D.
Clough specimen). [Also from two localities in
Wales (Bevins etal., 1985; Saich and Rust,
1987).]
Clausthalite
PbSe
Cubic
A suite of rare selenides accompanies thedendritic gold of Hope's Nose, Torquay, Devon:
clausthalite, eucairite, fischesserite, klockmannite, naumannite, penroseite, tiemannite, trtistedtite, tyrrellite, and umangite. They occur as
microscopic grains and patches in calcite (Stanleyetal., 1990). Analyses and optical data forclausthalite, eucairite, fischesserite, penroseite,
tiemannite, and tyrrellite were published earlier(Criddle and Stanley, 1986). Clausthalite is also
reported from Budleigh Salterton, Devon (P.
Nancarrow, pers. comm. in Stanley et al., 1990).

Hexagonal
N a6Ca2A16Si6024(CO3)2
As an alteration product of nosean in phonolite, Wolf Rock, off Cornwall (Harrison et al.,1977).

Coffinite, yttrian phosphatianForms the cores of radioactive nodules in
Triassic sediments from the Knowle borehole,near Solihull, West Midlands; U0.64Y0,21_
P0.17SiO4 (Harrison et al., 1983). ]Similarly fromthe Avoniel borehole, Belfast, N. Ireland; microprobe analyses (Parnell, 1988a).]

Carbonate-cyanotrichite
Orthorhombic
Cu4Alz(CO3,SO4)(OH)12.2H20
Bright blue matted acicular crystals and coatings on copper, cuprite and childrenite, in places
grading into chalcoalumite, from New East
Wheal Russell (=South Wheal Crebor), Tavistock, Devon (Starkey, 1986). [Cyanotrichite (lettsomite) was listed in the First and Third Supplementary Lists; cf. Macpherson, 1983.]

Corrensite(Interstratified chlorite + vermiculite or smectite)
In clay fraction of Keuper mudstone at WilkesIcy, near Audlem, Cheshire (Poole and Whiteman, 1966). In Keuper marl at a number of
localities in Yorkshire, the Midlands, and South
Wales (Davis, 1967). In the Rhaetic of St. Audries
Bay, near Watchet, Somerset; Seaton, Devon;
and unspecified localities in between (Myall,

Cancrinite

264

G. RYBACK AND P. C. TANDY1979). [Also in Ordovician pelites in Snowdonia,
Wales (Merriman and Roberts, 1985).]

Cornwall (NHM identification, P. Wallace specimen collected in 1986).

Coulsonite (?)
FeV204
Cubic
Mentioned as a possible former constituent,
now replaced by hematite, in basal breccias of the
Mercia Mudstone Group at Newhurst quarry,
Shepshed, Leicestershire (King, 1983). Somematerial was examined at NHM but results wereinconclusive and it remains an unconfirmed
occurrence.

Dioptase
CuSiO2(OH)2
Trigonal
Bright green crystalline crusts, with rosasite,
serpierite, and adamite, Putts Gill baryte mine,
Caldbeck Fells, Cumbria (NHM specimen,
collected by A. W. G. Kingsbury in 1953; cf.
Hartley, 1984).

Cumenggite Pb2l Cu20C142(OH)40 Tetragonal
Pale blue microcrystalline crusts with bournonite, bindheimite, cerussite, etc., from vein
exposure at Newporth Beach, near Falmouth,
Cornwall (Dean, 1982; Dean et al., 1983). Alsofrom Daymer Bay, near Polzeath, and Trerubies
Cove, near Delabole, Cornwall (NHM identifications, 1986, R. E. Starkey specimens).
Cuprosklodowskite
Triclinic(H30)2Cu 2+(UO2)2(SiO4)z.2H20 'Bright-green velvety botryoidal crust on a
specimen from West Wheal Owles, St. Just,
Cornwall, is shown to be cuprosklodowskite. The
X-ray pattern is significantly different from that ofsklodowskite (D. Hudson specimen; NHM identification). Similar and possibly identical material
from Geevor mine, St. Just, is under investigation(N. J. Elton and J.J. Hooper, pers. comm.,
1992).
Cuprotungstite
Cu2+ (WO4)2(OH)2
Yellowish-green glassy massive, with wolframite and metatorbernite, Wheal Gorland, St.
Day, Cornwall (NHM specimen, collected by
A. W . G . Kingsbury in 1955). Green crusts(-<10 ~tm) on scheelite, from a quartz-scheeliteferberite vein at Buckbarrow Beck, Corney Fell,
Cumbria (Young et al., 1986).

Tetragonal
NaFe 3+ (PO4)2(OH)a.2H20
Yellow bipyramids (0.2--0.7 mm) with chalcosiderite in kaolinised granite at Gunheath china
clay pit, St. Austell, Cornwall (Ince, 1986).
Cyrilovite

Delafossite
CuFeO2
Trigonal
Small spherules on quartz, Cornwall (An 1860
specimen from the Allan-Greg Collection in
NHM, studied by Buist et al., 1966). Blackish
pointed crystals (<0.5 mm) with malachite andcuprite on quartz, Tolvaddon mine, Marazion,

Epidote, stannianWith cassiterite, malayaite, stannian titanite,
and amphibole in skarn at The Crowns, Botallack, St. Just, Cornwall; 0.63-2.84% SnO2 (Van
Marcke de Lummen, 1986a).
Eucairite
CuAgSeSee under clausthalite.

Orthorhombic

Ferberite
FeWO4
Monoclinic
Recorded from Cornwall, at Penhale mine, St.
Cleer, and at Wheal Arthur and East Calstockmine, Calstock (Dines, 1956). The wolframitefrom 'Godolphins Ball in Cumberland' [Godolphin mine, Breage, Cornwall], analysed by
Kerndt (1847), appears to have been ferberite.
With scheelite and chalcopyrite in a quartz vein at
Buckbarrow Beck, Corney Fell, Cumbria; microprobe analyses (Young et al., 1986).
Ferroaxinite
Triclinic
Ca2Fe2+ AI2BSi4Ols(OH)An old analysis of axinite from Cornwall(Whitfield, 1887) fits manganoan ferroaxinite. In
Cornwall, ferroaxinite is recorded from Botallack
mine and Roscommon Cliff, St. Just, and from
Liskeard (Dunn et al., 1980). Both magnesianand manganoan varieties occur in contact skarns
at Meldon, Devon (Chaudhry and Howie, 1969).
]Magnesian ferroaxinite also from Ballyconneely,
Connemara, Co. Galway, Eire (Benjamin,1968).]
Ferrocolumbite
FeNb206
Orthorhombic
Subhedral platy crystals (-<5 mm) from pegmatite veins in kaolinised granite at Gunheath china
clay pit, St. Austell, Cornwall; analysis shows
substantial substituion by Ti, W, and Sc (Hodkinson and Clark, 1977). Cf. manganocolumbite.

Tetragonal
Cuz(Fe,Zn)SnS4
Irregular masses up to a few mm across witharsenopyrite and quartz, and as exsolution lamellae in stannite, Cligga Head, Perranzabuloe,
Ferrokgsterite

MINERALS FROM THE BRITISH ISLES
Cornwall (Kissin and Owens, 1989). The namereplaces in part 'isostannite' which is now discredited (see under kEsterite).
Ferrostrunzite
Triclinic
Fe2+Fe 3+ (POa)2(OH)2.6H20
Straw-yellow to golden-yellow radial aggregates up to 1 cm in goethite from Gravel Hillmine, Perranzabuloe, Cornwall (Weiss, 1989).
The X-ray pattern is said to match JCPDS 11-133(strunzite) but an XRF analysis shows a ratio of
10 : 1 of total Fe to Mn.
Fersmite
Orthorhombic(Ca,Ce,Na)(Nb,Ta,Ti)2(O,OH,F)6
Partially replacing a microlite grain in lithium
pegmatite from Meldon, Devon (von Knorringand Condliffe, 1984).
Fischesserite
Ag3AuSe2
See under clausthalite.
Fraipontite

Cubic

Monoclinic(Zn,AI)3(Si,AI)2Os(OH)4
Soft white botryoidal crust, with smithsonite
and hemimorphite, from Copperthwaite vein,
Swaledale, North Yorkshire (NHM identification, 1967, G. Ryback specimen).
F~lOppite
Pb3SbsSls
Monoclinic
Dark grey patches of fibrous crystals accompanying stibnite in a quartz-stibnite-zinckeniteberthierite vein at Wet Swine Gill, Caldbeck
Fells, Cumbria (Fortey et al., 1984; cf. Cooper
and Stanley, 1990).
Glaucodot(Co,Fe)AsS
Orthorhombic
Microscopic overgrowths on arsenopyrite in aquartz-chiorite-apatite vein at Scar Crag, Causey
Pike, near Keswick, and on marcasite at Tynebottom mine, near Alston, Cumbria (Ixer et aI.,
1979). From Paddy End mine, Coniston, Cumbria (C. J. Stanley, pets. comm. quoted byYoung, 1987).

265

Marshes, Norfolk (Pye, 1981, 1984); cf. akagan6ite. An analysis of greigite from Treore mine,
St. Teath, Cornwall (Kingsbury Collection inNHM) is given by Criddle and Stanley (1986) but
the locality is in doubt and this occurrence
requires confirmation (C. J. Stanley, pers.
comm., 1990).
Grossular, stannoan
In calc-silicate hornfels at Meldon quarry, andin chert at Red-a-ven mine, Meldon, Devon(Dearman, 1965; El Sharkawi and Dearman,
1966). In a calc-silicate vein at Crowns Rock,
Botallack, St. Just, Cornwall (Alderton andJackson, 1978).
Hedleyite
Bi7Te3
Trigonal
As grains (-<0.2 mm) with bismuth, bismuthinite, and joseite in greisen, Carrock mine, Caldbeck Fells, Cumbria (Cooper and Stanley, 1990).
Hedyphane
Pb3Ca2(AsO4)3CI
Hexagonal
Cream coioured radiating crystal aggregates(-<7 mm) with duftite on quartz, Brandy Gill,
Caldbeck Fells, Cumbria (NHM identification,
1985, R . E . Starkey specimen). [Also fromTynagh mine, Co. Galway, Eire, as white togreenish tufts with malachite (A. de Hailer
specimen; P. Perroud, pers. comm., 1989).]
Hentschefite

Monoclinic
CuFe 3+ (PO4)z(OH)2'Andrewsite' from Wheal Phoenix, Linkinhome, Cornwall, is a mixture of hentschelite androckbridgeite, with minor chalcosiderite, and is
discredited as a species (Dunn, 1990. Cf.
barbosalite.
Hetaerolite
ZnMn204
Tetragonai
Small black octahedra and crystal aggregates inlizardite veins at Eastern Cliff, Kennack Sands,
Lizard, Cornwall (Bevins et al., 1987).

Gold, palladian
The dendritic gold of Hope's Nose, Torquay,
Devon, is palladian, with about 1 to over 6% Pd(Clark and Criddle, 1982); may contain up to 16%
of palladium (Scrivener et al., 1982).

Heterogenite
CoO(OH)
Trigonal
Black botryoidal crust c. 3 • 2 cm across on
mineralised Permo-Triassic sandstone fromEngine vein, Alderley Edge, Cheshire (NHM
specimen collected by A. W. G. Kingsbury in1963).

Greigite
Fe 2+Fe3+ $4
Cubic
Significant component of siderite-calcite-Fe
sulphide concretions being formed in reduced
intertidal marsh and sandflat sediments, Warham

Hurnboldtine Fe2+CzO4.2H20
Monoclinic
Yellow mierocrystalline crust (4 • 4 cm inarea), associated with crystals of cassiterite,
quartz and tourmaline, from Pendarves mine,

266

G. RYBACK AND P. C. TANDY

Camborne, Cornwall (NHM identification, 1986,
D. Baker specimen).
Hydro-andradite
Cubic
Ca3Fe3+(SiO4)3 x(OH)4x
A fluorine-beating aluminian hydro-andradite
occurs in quartz-rich nodules within metasomatically altered basalt at Botallack, St. Just, Cornwall (Van Marcke de Lummen, 1986b).

Jos#ite (Jos~ite-A) Bi4TeS2
Trigonal
A major constituent of 'grtinlingite' from Carrock mine, Caldbeck Fells, Cumbria, otherphases usually present being jos~ite-B, bismuthinite, and ingodite (Peacock, 1941; Zav'yalov andBegizov, 1981b; Cooper and Stanley, 1990).
As minute grains, with bismuthinite and laitakarite, at Coniston mines, Cumbria (Stanley andVaughan, 1982).

Hydrohetaerolite
Tetragonal
Zn2Mn408.H20
On calcite in oxidised veinstuff from Copperthwaite vein, Swaledale, North Yorkshire (NHM
identification, 1968, G. Ryback specimen). [Alsofrom Ballygown South mine, Silvermines, Co.
Tipperary, Eire, mixed with coronadite, as thinblack crusts on limonite containing hemimorphite(NHM identification, 1992, G. Ryback
specimen).]Josgite-B
Bi4Te2S
Trigonal
See under joseite-A and ingodite, above.

IdaiteCu3FeS 4 (?)
Hexagonal
As a secondary sulphide in a mineralized fault
in Triassic Dolomitic Conglomerate at Clevedon,
Avon (Ixer, 1986). A mineral close to idaite wasalso reported from Alderley Edge, Cheshire (Ixerand Vaughan, 1982).

Kentrolite
Pb2Mn2Si209
Orthorhombic
A thin red plate on matrix from Higher Pitts
Farm, Priddy, Somerset (NHM identification,
1982, A . W . G . Kingsbury specimen). Listedfrom Colemans quarry, Holwell, Somerset (Alabaster, 1990a).

Ikaite
CaCO3.6H20
Monoclinic
Although ikaite itself has not been recorded
from the British Isles, it was the parent mineral of
the long-known calcite pseudomorphs called 'jarrowite' or 'pseudogaylussite', from the River
Tyne at Jarrow, Tyne and Wear, and from the
Clyde at Cardross, Strathclyde, Scotland (Shearman and Smith, 1985).

K~sterite
Cu2(Zn,Fe)SnS4
Tetragonai
With stannoidite and rare zincian stannite at St.
Michael's Mount, Marazion, Cornwall; rarely at
Cligga Head, Perranzabuloe, Cornwall, withstannite (Moore and Howie, 1984). 'Isostannite'from Cligga Head (Claringbull and Hey, 1955) iskrsterite (Kissin and Owens, 1975; Corazza et al.,1986) or ferrok~sterite (Kissin and Owens, 1989).
[A very old analysis by Johnston referring to 'akind of tin pyrites' from St. Michael's Mount, andshowing Zn > Fe, is given by De ia Beche (1839)
without other details.]

Ingodite
Bi2TeS
Hexagonal
With jos~ite-A, jos~ite-B, and bismuthinite, asa minor component of 'grfinlingite' from Carrock
mine, Caldbeck Fells, Cumbria (Zav'yalov andBegizov, 1981a; Cooper and Stanley, 1990).
Isomertieite
Pdll SO2As2
CubicAnhedral to euhedral grains (-<15 p.m) associated with gold at Hope's Nose, Torquay,
Devon; mertieite-II occurs similarly (Clark andCriddle, 1982).
Ixiolite (?) (Ta,Nb,Fe,Mn,Sn)204 Monoclinic
In granite pegmatite at Megiliggar Rocks,
Tremearne, Breage, Cornwall; XRD pattern
identical with or close to that of ixiolite, butchemical confirmation is required (NHM identification, 1987, N. Talbot specimen).

KahkiteFe2(AsO4)2.7H20
Monoclinic
Green botryoidal crusts with zeunerite, King's
Wood mine, Buckfastleigh, Devon; pale green
crusts, South Terras mine, St. Stephen-in-Brannel, Cornwall (NHM identifications, 1982 and1984, R. W. Barstow and A. L. Ellis specimens,
respectively).

Monoclinic
NaFe93+(PO4)6( OH)10.5H20
Small globules of radiating greenish-yellow
fibres, with chalcosiderite in quartz-goethitematrix from Wheal Phoenix, Linkinhorne,
Cornwall (Braithwaite and Corke, 1980).
Kidwellite

Klockmannite
CuSe
See under clausthalite.

Hexagonal

Monoclinic(Cu,Zn)5(SO4)2(OH)6.6H20
Aggregates of tiny blue-green tabular crystals
with gypsum, namuwite, schulenbergite, andKtenasiteMINERALS FROM THE BRITISH ISLES
serpierite, Smallcleugh mine, Nenthead, Cumbria; identified by XRD (Rust, 1991a). This
material, also found at Brownley Hill mine, is infact zinc-dominant, ranging in composition fromthe nearly pure zinc end-member to Cu:Znnearly 1 : 1 (Livingstone, 1991).
Kuramite
Cu3SnS 4
Tetragonal
Grey granular metallic veins with possible
covellite, stannoidite, etc., in granite from Gunheath china clay pit, St. Austell, Cornwall; XRD,
optical, and electron microprobe identification(C. J. Stanley, pers. comm., 1989; NHM specimen from Capt. E. J. P. Sutton).
Laitakarite
Bi4(Se,S)3
Trigonal
Grains (<50 ~tm) associated with bismuth andbismuthinite, Bonser vein, Coniston mines, Cumbria (Stanley and Vaughan, 1982). ]First selenium
mineral from the British Isles.}Orthorhombic
MnNb206
Minute inclusions in minerals replacing wolframite at Carrock mine, Caldbeck Fells, Cumbria;
highly ferroan, with notable amounts of W, Ti
and Sc (Beddoe-Stephens and Fortey, 1981).
Minute crystals showing complex oscillatory
zoning, from pegmatites in the Meldon aplite,
Devon; composition within much of the manganocolumbite-manganotantalite range (von Knorring and Condliffe, 1984). Cf. ferrocolumbite.
Manganocolumbite

267

Melanotekite
Pb2Fe 3+ Si209 Orthorhombic
Much altered yellow relict crystals in limestonehosted replacement deposits of Fe and Mn oxides
at Merehead quarry, Somerset, and two localities
at Westbury-on-Trym, Avon (Alabaster, 1985).
Listed from Colemans quarry, Holwell, Somerset(Alabaster, 1990a).

Mereheadite
See under unnamed lead and lead-molybdenum oxychlorides.
Mertieite-H
Pds(Sb,As)3
See under isomertieite.

Trigonai

MetakOttigite (?)
Triclinic(Zn,Fe 3+,Fe2+)3(AsO4)2.8(H20,OH)
Minute yellowish-brown acicular crystals incavities in quartz, Sandbeds Gill, Bassenthwaite,
Cumbria; XRD indicates metakOttigite or ametak~Sttigite-symplesite intermediate (NHM
identification, 1988, N. Thomson specimen).
Metasideronatrite
Orthorhombic
Na2Fe3+(SO4)2(OH).H20
Yellow botryoidal material with gypsum andpyrite on a specimen from Trerubies Cove, near
Delabole, Cornwall, is a mixture of sideronatrite
and metasideronatrite; other specimens carry
only sideronatrite (NHM identifications, 1985,
R. E. Starkey specimens).

Manganosite
MnO
Cubic
Pinkish red fibres on a specimen of chrysoberylsaid to come from Ford Farm quarry, Sticklepath,
Devon, possibly contain manganosite as a constituent along with quartz, possible pseudorutile,
and an unidentified 7 A mineral (NHM identification, 1982, A. W. G. Kingsbury specimen). Also
shown to be a constituent of black crystalline
material from Roughton Gill, Caldbeck Fells,
Cumbria (NHM identification, 1986, Mr. Mings
specimen).

Metavoltine
Hexagonal
K2Na6Fe 2+Fe 3+ (804) 1202 . 18H20
Sulphur-yellow botryoidal crust, from cliffs
near the sea-level adit, Wheal Edward, St. Just,
Cornwall (NHM identification, 1981, G. Ryback
specimen).

Marialite
3NaA1Si3Os.NaCI
Tetragonal
White fibrous compact aggregates with tourmaline from the New Aplite quarry, Meldon, Devon(A. W. Scoble specimens in NHM, presented in1959). [The variety dipyre appeared in the Fifth
Supplementary List.]

Natromontebrasite
Triclinic(Na,Li)Al(PO4)(OH,F)
Alteration product of amblygonite in granite
pegmatite at Megiliggar Rocks, Tremearne,
Breage, Cornwall; identification based on electron microprobe analyses (Stone and George,
1983).

Mawsonite
Cu6Fe2SnS8
Tetragonal
Replacing small grains of stannoidite in theHensbarrow granite stock, St. Austell, Cornwall(Manning, 1983).

Moolooite
CuC204.nH20 Orthorhombic
Vivid blue crystalline inclusions (-<0.5 mm) in
the lichen Lecidea inops from Coniston mines,
Cumbria (Chisholm et al., 1987).

Natron (?)
Na2CO 3.10H20
Monoclinic
An old entry in the locality card-index of theNHM collections refers to natron from Botallack

268

G. RYBACK AND P. C. TANDY

mine, St. Just, Cornwall, but a recent (1990)
search in the collections failed to find any
specimens. Listed by Wolioxail (1989) on thebasis of this record.

Naumannite
Ag2Se
See under clausthalite.

Orthorhombic

Nordstrandite
AI(OH)3
Triclinic
Earthy, white or pale cream, associated withbrown Fe oxides and black manganiferous
matter, in nodules from the infill of solution pipes
in Upper Chalk at Newhaven, East Sussex(Wilmot and Young, 1985).
Para-alumohydrocalcite
CaAI2( CO3)2(OH)4.6H20
With allophane, scarbroite, and dundasite infissure-fill in limestone, Hampstead Farm quarry,
Chipping Sodbury, Avon (Alabaster, 1989a,
1990b). As a vein 8 mm wide in ferruginous
sandstone from a quarry at Boughton, near
Northampton; identified by XRD (Dept. ofGeology, Leicester University specimen; J. Faithfull, pers. comm., 1989).
Paracostibite (?)
CoSbS
Orthorhombic
A specimen supposedly from Wheal Cock, St.
Just, Cornwall (Kingsbury Collection in NHM)
has been analysed (Criddle and Stanley, 1986)
and confirmed by XRD; but it may be fromanother locality and the occurrence needs to be
confirmed (C. J. Stanley, pers. comm., 1990).
Parahopeite
Zn3(PO4)z.4H20
Triclinic
Recorded as having been found by A. W. G.
Kingsbury [in the 1950s-60s] at Roughton Gill,
Caldbeck Fells, Cumbria (Hartley, 1984); and at
Turf Pits mine, Grassington Moor, and Cockhill
mine, Bewerley, both in North Yorshire (Dunham and Wilson, 1985).
Pararammelsbergite (?)
Orthorhombic
NiAs2
A nickel diarsenide with c. 5% Co and showing
the optical properties of pararammelsbergite isnoted as a trace component of the mineralisation
at Alderley Edge, Cheshire (Ixer and Vaughan,1982).
Parkinsonite
See under unnamed lead and lead-molybdenum oxychlorides.

Parnauite

Orthorhombie

Cu9(AsO4)2(SOa)(OH)I0.7H20
Bright green crystalline, on an old specimen ofspangolite from Wheal Gorland, Gwennap,
Cornwall (A. Russell Collection in NHM; XRD
identification, 1981). Subsequently confirmed on
specimens from five other localities in Cornwall
and Devon, submitted by several collectors(NHM identifications). [Also, as pale turquoise
spherules with tennantite and with clinotyrolite,
at Tynagh mine, Co. Galway, Eire (A. de Hailer
specimen; P. Perroud, pers. comm., 1989).]

Penroseite(Ni,Co,Cu)Se2
See under clausthalite.

Cubic

Pharmacolite CaHAsO4.2H20
See under picropharmacolite.

Monoclinic

Philipsburgite
Monoclinic(Cu,Zn)6(AsO4,PO4)2(OH)6.H20
Grass-green globular aggregates (-<2mm)
associated with malachite in cavities in veinquartz, Potts, Gill baryte mine, Caldbeck Fells,
Cumbria (Braithwaite and Ryback, 1988); also
from Low Pike (Young et al., 1990) and Driggith
mine (N. Hubbard specimen, identified by IR,
1990). Thin botryoidal crusts in small cavities inquartz, Wheal Carpenter, Gwinear, Cornwall(NHM identification, 1989, N, Hubbard
specimen).
Phosphuranylite (?)
Ortborhombic
Ca(UO2)3(PO4)z(OH)z.6H20
Bright yellow crystalline crusts on shale from
Wheal Edward, St. Just, Cornwall; XRD patternnear that of phosphuranylite, but chemical confirmation would be desirable (NHM specimen,
collected by R. W. Barstow).
Phurcalite
Orthorhombic
Ca2(UO2)3(POa)2(OH)4.4H20
Microscopic yellow bladed crystals, often inradiating clusters, with autunite on joints in
granite, Merrivale quarry, Dartmoor, Devon(Braithwaite et al., 1989b). One of the 'unidentified uranium mineral(s)' from Merrivale mentioned in the Fourth Supplementary List.
Picropharmacolite
Triclinic
Ca4MgHz(AsO4)4 . 11H20
Crust of white satiny fibres and massive, withpharmacolite, weilite, wapplerite, etc., from
Wanthwaite mine, St. John's in the Vale, Cumbria (NHM specimens, see Young, 1987). [Also269

MINERALS FROM THE BRITISH ISLES
from Silver Glen, Alva, Clackmannanshire, Scotland, with erythrite and Co arsenides (S. Moreton
specimen, XRD identification by Royal Museumof Scotland).]PlanchEite

Orthorhombic
CusSi8022(OH)4.H20
Three A. W. G. Kingsbury specimens in NHM,
identified by XRD; blue compact radiating
sphernles up to 8 mm across coated with chrysocolla, Driggith mine, Caldbeck Fells, Cumbria(collected 1952; cf. Hartley, 1984, and Young,1987); dark blue grains in turquoise, Gunheathchina clay pit, St. Austell, Cornwall (collected1958); and a broken matrix-free blue compact
radiating spherule several mm across, Engine
vein, Alderley Edge, Cheshire (collected 1963).
Pollucite(Cs,Na)2A12Si4012. H20
Cubic
Colourless anhedral grains in pegmatite lenses
in aplite, Meldon, Devon (Kingsbury, 1964).
Potassium magnesio-arfvedsonite
A new amphibole, occurring as a minor component of a minette intrusion at Pendennis Point,
Falmouth, Cornwall (Hall, 1982).
Pseudobolgite
Tetragonal
PbzCu4Cil0(OH)s.2HeO
See under bolrite.
Pseudorutile (?)
Fe2Ti309
See under manganosite.

Hexagonal

Pyrostilpnite
Ag3SbS3
Monoclinic
Red-brown platy crystals on quartz, St. Teath,
Cornwall; identified by XRD (NHM specimen,
collected by A. W. G. Kingsbury in 1959).
Queitite

Monoclinic
Zn2Pb4(SO4) (SiO4) (Si207)
White silky botryoidal crust on leadhillite andsusannite, Red Gill mine, Caldbeck Fells, Cumbria (Braithwaite et al., 1989a). [Also from Leadhills, south Scotland (Jackson, 1990).]
Ranci#ite

Hexagonal (?)(Ca,Mn2+)Mn44+O9.3H20
Pink-brown powdery from near Newbiggin,
Teesdale, Durham (precise locality not known;
NHM specimen, XRD identification, 1985).

Redondite (Messbach-type variscite)
Orthorhombic
A1PO4.2H20
Identified by XRD at Pitts Cleve quarry,
Tavistock, Devon, and Treore mine, St. Teath,
Cornwall (A. W . G . Kingsbury specimens in
NHM). [The Devon material was probably thatexhibited as variscite at a Mineralogical Society
meeting in 1962 (Mineral. Mag., 33, lxiv).]
Reichenbachite

Monoclinic
Cu5(PO4)2(OH)4

Many specimens of pseudomalachite from the
Old Gunnislake mine, Calstock, Cornwall, havebeen re-identified as the recently described polymorph reichenbachite (R. S. W. Braithwaite and
G. Ryback, unpublished work).
Roquesite

CuInS2

Tetragonal

Inclusions (<0.3 mm) in chalcosine, Geevor
mine, St. Just, Cornwall; analysis and optical data
(Criddle and Stanley, 1986). [First indium
mineral from the British Isles.]Roscherite
Monoclinic
Ca(Fe 2+ ,Mn)2Be3(PO4)3(OH)3.2H20
Dark sage-green, radiating, forming spherules
up to 5 mm across, on crusts of minute carbonatefluorapatite crystals lining cavities in quartz,
Clitters United mine, Calstock, Cornwall; close
to the iron end-member in composition. Also
found as fiat radiating aggregates on joints inquartz (Clark et al., 1983).
Sadanagaite
Monoclinic(K,Na) Ca2(Fe~+,Mg,AI,Fe3+,Ti)5(Si,A1)sO22(OH)2
From the amphibole zone of skarns at Botallack, St. Just, Cornwall (Van Marcke de Lummen, 1985).
Sal#eite (?)

Monoclinic
Mg(UO2)2(PO4)2.10H20

Incompletely characterised uranium minerals
giving XRD patterns matching those of sal6eite,
or similar to those of salreite and nov~irekite,occur in Cornwall at Wheal Edward, St. Just;
Wheal Basset, Redruth; and Roughtor Great
Consols, St. Clether (NHM identifications).
Specimens have been found by several collectors.
[Exact identification difficult since there are noadequate published X-ray data for pure salreite.]

270

G. RYBACK AND P. C. TANDY

SchrOckingerite

Triclinic

NaCa3(UO2)(CO3)3(SO4)F.10H20
Greenish yellow spherules (-<4 mm) composedof minute pseudohexagonal plates, with andersonite and gypsum, on walls of a level in Geevor
mine, St. Just, Cornwall (Elton and Hooper,
1992).
Schulenbergite
Trigonal(Cu,Zn)7(SO4,fO3)2(OH) t0.3H20
Rare small blue-green crystals with serpieriteand namuwite, Waterbank mine, Ecton, Staffordshire (NHM identification, 1987, S. A. Rust
specimen), and similarly from Smallcleugh mine,
Nenthead, Cumbria (Livingstone etal., 1990).
From Prince of Wales mine, Calstock, Cornwall(NHM identification, J. Betterton specimen).
[Also from Wales at Nant-y-Cagal (Eaglebrook)
mine, Ceulanymaesmawr, Dyfed, and Dyfngwm
mine, Penegoes, Powis (NHM identifications,S. A. Rust specimens).]
Schultenite
PbHAsOa
Monoclinic
A spray of colourless blades (-<1 mm) in cavity
in white quartz from Deer Hills vein, Caldbeck
Fells, Cumbria (Symes et al., 1991).
Sodium-zippeite
Orthorhombic
Na4(UO2)6(SO4)3(OH) 10.4H20
All specimens of 'zippeite' from Geevor mine,
St. Just, Cornwall, examined so far have proved
to be sodium-zippeite (N. J. Elton and J.J.
Hooper, pers. comm., 1992).
Stannite, zincian
From Wheal Agar, Iilogan, Cornwall, containing 3.1% Zn (Springer, 1968). Small grains (with5.1% Zn) in the Hensbarrow granite stock, St.
Austeli, Cornwall (Manning, 1983). From St.
Michael's Mount, Marazion (3-4% Zn) andCligga Head, Perranzabuloe (5~5% Zn), Cornwall (Moore and Howie, 1984). These papers
report electron microprobe analyses. Cf.
ferrok~sterite.
Stannoidite

Orthorhombic
Cus(Fe,Zn)3SnzS12With stannite and mawsonite as small grains in
the Hensbarrow granite stock, St. Austell, Cornwall (Manning, 1983). Seen abundantly, closely
associated with k~sterite, in polished sections of
the mineralised veins at St. Michael's Mount,
Marazion, Cornwall (Moore and Howie, 1984).

Sternbergite (?)
AgFe2S3
See under argentopyrite.

Orthorhombic

Strashimirite
Monoclinic
Cus(AsO4)4(OH)4.5H20
Pale blue compact, from Wheal Gorland,
Gwennap, Cornwall (NHM identification, 1985,
D. Lloyd specimen). [Also from Tynagh mine,
Co. Galway, Eire, as pale blue-green fluffy
spherules, sometimes enclosing olivenite (Sarpet al., 1987; P. Perroud, pers. comm., 1989).]
Strengite
FePO4.2H20
Orthorhombic
Pinkish globular aggregates on yellowish
fibrous cacoxenite in goethite, Stowe's shaft,
Wheal Phoenix, Linkinhorne, Cornwall; and as
pale purple globules with goethite and cacoxenite
from Burdell Gill, Caldbeck Fells, Cumbria(NHM specimens, collected by A . W . G .
Kingsbury; exhibited at a Mineralogical Society
meeting in 1962, Mineral. Mag., 33, lxiv). From
Carrock mine, Caldbeck Fells (D. McCallum,
pers. comm. in Cooper and Stanley, 1990), andGravel Hill mine, Perranzabuloe, Cornwall (C.
Sparrow, pers. comm., 1991; XRD identification
by Monica Price, Oxford). [Also from Ballycormick, Shanagolden, Co. Limerick, Eire, as clusters of pale-lilac needles with cacoxenite (N.
Hubbard specimen, IR identification by G.
Ryback, 1991).]
Strunzite MnZ+Fe3+(PO4)2(OH)2.6H20 Triclinic
Straw-yellow acicular (1-2 mm) in cavities ingoethite, Gravel Hill mine, Perranzabuloe, Cornwall (NHM identifications, 1986-87, M. Merryand C. Sparrow specimens). Cf. ferrostrunzite.
SweetiteZn(OH)2
Tetragonal
A new species, from Milltown quarry, near
Ashover, Derbyshire; whitish, transparent ortranslucent, bipyramidal or occasionally tabular
crystals up to 1 mm in size, with fluorite, calcite
and baryte (Clark et al., 1984; Rust, 1991b). This
was the first of four polymorphs of Zn(OH)2
found by S. A. Rust at this locality; cf. ashoverite,
unnamed zinc hydroxide, and wtilfingite.
Symplesite (?)

Triclinic
Fe3(AsO4)2.8H20
A member of the symplesite-metavivianite
series, probably symplesite, forms rare palegreenish flat radiating aggregates on quartz fromdumps below Netherrow Brow, Caldbeck Fells,
Cumbria (NHM identification, 1987, B. Youngspecimen; see Cooper and Stanley, 1990). Also at

MINERALS FROM THE BRITISH ISLES
Wanthwaite mine, St. John's in the Vale, Cumbria (NHM specimen, see Young, 1987). Cf.
metak0ttigite.
Tennantite, bismuthian (?)
An analysis and optical data are given fortennantite with 7.4% Bi, supposedly from Bicknoller quarry, near Watchet, Somerset (Criddle
and Stanley, 1986), but the specimen (Kingsbury
Collection in NHM) may be from another locality(C. J. Stanley, pers. comm., 1990).
Thenardite
Na2SO4
Orthorhombic
White or colourless curved bladed crystals c.
1 cm long, in abandoned workings of Billingham
anhydrite mine, Cleveland (Raymond, 1959).
Thick, finely crystalline, colourless or white
efflorescences, Mountfield gypsum mine, Battle,
East Sussex (Young et al., 1985).
Tiemannite
HgSe
Cubic
From Hope's Nose, Torquay, Devon (seeunder clausthalite). [Also from old mine dumps inSilver Glen, Alva, Central Region, Scotland(Parnell, 1988b).]
Titanite (sphene), stannian
From skarn at Botallack, St. Just, Cornwall;-<7.0% SnO2 (Van Marcke de Lummen, 1985,
1986a). Accessory in granite near the Birch Tor
and Vitifer mines, Dartmoor, Devon; -<4.6%
SnO 2 (Alderton, 1988).
Triphylite
LiFePO4
Orthorhombic
Intergrown with triplite in granite pegmatite at
Megiliggar Rocks, Tremearne, Breage, Cornwall(Stone and George, 1983).
Triplite(Mn,Fe,Ca)2PO4(F,OH) Monoclinic
Dark brown, irregular piece about 5 x 2 cm
across, in granite pegmatite at Megiliggar Rocks,
Tremearne, Breage, Cornwall; composition variable (George etal., 1981; Stone and George,
1983). [Also from lithium-rich pegmatite at Glenbuchat, Aberdeenshire, Scotland (Macphersonand Livingstone, 1982).]
Tristramite
Hexagonal(Ca,U 4 + ,Fe 3 + )(PO4,SO4,CO3).l.5-2H20
A new species, forming greenish fine-grained
aggregates of acicutar to fibrous crystals in quartzpitchblende veins at Wheal Trewavas, Trewavas
Head, Breage, Cornwall; also at several other old
mines in Cornwall (Atkin et al., 1983).

271

Triistedtite
Ni3Se4
See under clausthalite.

Cubic

Tyrrellite(Cu,Co,Ni)3Se4
See under clausthalite.

Cubic

Umangite
Cu3Se2
See under clausthalite.

Tetragonal

Unnamed copper calcium sodium phosphate
hydrateSprays of small aquamarine-blue bladed
crystals on chrysocolla from Roughton Gill mine,
Caldbeck Fells, Cumbria; may be a new species(Cooper and Stanley, 1990). An apparently
identical mineral occurs at Judkins quarry,
Nuneaton, Warwickshire (Ince et al., 1990).
Unnamed fibrous iron sulphide
An incompletely characterised mineral, similar
to the fibrous iron sulphide from Canada andCyprus (Jambor, 1969; Harris and Vaughan,1972), occurs with valleriite at Pol Cornick,Mullion, Lizard, Cornwall (Clark, 1970).
Unnamedlead
andlead-molybdenum
oxychlorides
Work is continuing on the two new species from
Merehead quarry, Somerset, reported in the
Fourth Supplementary List. One of these appears
to have a very complicated and possibly novel
structure. Of the working names 'mereheadite'(yellow) and 'parkinsonite' (red), the latter has
recently been approved by the IMA. The appearance of these names in the literature (Alabaster,
1989b) and their popular use among mineraldealers and collectors, prior to any publication
defining the species, is regrettable.
Unnamed lead oxide hydrate
Rare white cubo-octahedral crystals in anoxidised vein exposure at Milltown quarry, near
Ashover, Derbyshire; XRD pattern matches thatof synthetic 3PbO.H20 (Rust, 1991b).
Unnamed silver iron sulphides (?)
Optical and electron microprobe examinationof argentiferous nickel ore from Tynebottom
mine, near Alston, Cumbria, revealed two minor
phases: AgFeS2, forming lamellar intergrowths
with chalcopyrite; and AgFesSI> an alteration
product of argentopyrite (Ixer and Stanley, 1987;
may not be from this locality, cf. argentopyrite).

272

G. RYBACK AND P. C. TANDY

Unnamed zinc analogue of ktenasite
See under ktenasite.
Unnamed zinc hydroxide
A white radiating acicular mineral, identicalwith synthetic y-Zn(OH)2, occurs together withother polymorphs of Zn(OH)2 in an oxidised vein
exposure at Milltown quarry, near Ashover,
Derbyshire (Clark et al., 1988; Rust, 1991b). Cf.
sweetite.
Uranopilite
Monoclinic(UO2)6(SO,~)(OH)10.12H20
From St. Just, Cornwall (Chemical analysis by
Nova~ek, 1935, quoted by Palache et al., 1951).
Orange encrustation on altered uraninite-bearingveinstuff from Wheal Owles, St. Just (Frondel,
1952).
Violarite
FeNi2S4
Cubic
With pyrite and marcasite as microscopic
loosely intergrown aggregates within chalcopyrite
or silver minerals at Tynebottom mine, near
Alston, Cumbria (Ixer and Stanley, 1987; may
not be from this locality, cf. argentopyrite).
]Also, as an alteration product of pentlandite, atTalnotry, Newton Stewart, south Scotland (Stanley etal., 1987); and from Esgair Hir mine,
Ceulanymaesmawr, Dyfed, Wales (Rust andMason, 1988).]
Vochtenite
Monoclinic(Fe 2+,Mg)Fe 3+(UO2)4(POa)4(OH ).12-13H20
A new species, occurring as small brown
pseudoquadratic crystal aggregates at Wheal
Basset, Redruth, Cornwall (Zwaan et al., 1989).
Waylandite
Trigonal(Bi,Ca)A13(PO4,SiO4)2(OH)6
Small ( < 0 . 5 m m ) colourless or brownish
crystals, and bluish crystalline bands, on bismutite, Restormel mine, near Lostwithiel, Cornwall(Clark et al., 1986). Tiny greenish blue crystals incavities in goethite from Stowe's shaft, Wheal
Phoenix, Cornwall, belong to the plumbogummite group, near waylandite (NHM identification, 1985, N. Hubbard specimen).
Weddellite
CaC204.2H20
Tetragonal
Small (-<1 mm) modified flattened bipyramidsin the oxidised vein exposure in Milltown quarry,near Ashover, Derbyshire (Rust, 1983).
WeiliteCaHAsO4
See under picropharmacolite.

Triclinic

Whewellite
CaC~O4.H20
Monoclinic
Colourless glassy crystalline in coal, with calcite, from Mealbank quarry, Ingleton, North
Yorkshire (NHM identification, 1964, A. W. G.
Kingsbury specimen). [Also, with glushinskite,under the lichen Lecanora atra at Mill of Johnston, near Insch, NE Scotland (Wilson etal.,1980).]
Wickmanite
MnSn(OH)6
Cubic
Orange-yellow octahedra (-<1 mm) in cavities
in axinite, Wheal Cock Zawn, St. Just, Cornwall(Hubbard, 1989).
WMfingite
Zn(OH)2
Orthorhombic
A small star-like cluster of colourless crystals inan oxidised vein exposure at Milltown quarry,near Ashover, Derbyshire (Clark etal., 1988;
Rust, 1991b). Cf. sweetite.
Yarro wire
Cu9S sHexagonal
Grains (<0.5 ram) replacing bornite and chalcosine, Cannington Park, near Bridgwater,
Somerset; analysed (Criddle and Stanley, 1986;
C.J. Stanley, pers. comm., 1989). Probably
widespread as an alteration product of copper
sulphides but previously referred to as 'blaubteibender' covellite, which has now been characterised as the species yarrowite and spionkopite.

Monoclinic(Fe 2+,Mn)2(POa)F
Dark brown masses in pegmatite at Megiliggar
Rocks, Tremearne, Breage, Cornwall (NHM
identification, 1987, N. Talbot specimen).
Zwieselite

R e f e r e n c e s

Alabaster, C. (1985) Melanotekite from the Bristol
District. Proc. Bristol Nat. Soc., 45, 11-16.
(1989a) Alumohydrocalcite from the Bristol District. J. Russell Soc., 2, No. 2, 5-10.
- - (1989b) The Wesley mine: a further occurrence ofmanganese oxide hosted lead oxychloride minerals in
the Bristol District. Ibid., 29-47.
(1990a) Alstonite and barytocalcite from Llantrisant, South Wales, and barytocalcite from Holwell,Mendip Hills, England. Ibid., 3, No. 1, 1-16.
(1990b) New occurrences of secondary aluminium
minerals from the Bristol District. Ibid., 3, No. 2,
49-59.
Alderton, D. H. M. (1988) Calc-silicate minerals fromthe Dartmoor granite. Mineral. Mag., 52, 527-9.
- - and Jackson, N. J. (1978) Discordant calc-silicate
bodies from the St. Just aureole, Cornwall. Ibid., 42,427-34.
----MINERALS FROM THE BRITISH ISLES
Andrew, A. R. (1910) The geology of the Dolgelleygold-belt, North Wales. Geol. Mag., 47, 159-71.
Atkin, D., Basham, I. R., and Bowles, J.. F. W. (1983)
Tristramite, a new calcium uranium phosphate of therhabdophane group. Mineral. Mag., 47,393-6.
Beddoe-Stephens, B. and Fortey, N. J. (1981) Columbite from the Carrock Fell tungsten deposit. Ibid., 44,
217-23.
Benjamin, R. E. K. (1968) An axinite-epidote-tourmaline vein cutting amphibolite, western Connemara,
Eire. Ibid., 36, 747-50.
Bevins, R. E., Rowbotham, G., Stephens, F.S.,
Turgoose, S., and Williams, P. A. (1985) Lanthanite(Ce), (Ce,La,Nd)2(CO3)3.SH20, a new mineral from
Wales, U.K. Am. Mineral., 70, 411-13.
- - Symes, R. F., Horak, J. M., and Holyer, V. (1987)
Hetaerolite from Eastern Cliff, Kennack Sands,
Cornwall: the first British occurrence. Mineral. Mag.,51, 1720.
Braithwaite, R. S. W. and Cooper, B. V. (1982)
Childrenite in South-West England. Ibid., 46,
119-26.
-and Corke, H. (1980) Kidwellite from Cornwall.
Ibid., 43, 952-3.
and Ryback, G. (1988) Philipsburgite from the
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Cooper, M. P., and Hart, A. D. (1989a) Queitite,a mineral new to Britain, from the Caldbeck Fells,
Cumbria. Ibid., 53, 508-9.
Paar, W. H., and Chisholm, J. E. (1989b)
Phurcalite from Dartmoor, Southwest England, andits identity with 'nisaite' from Portugal. Ibid., 583-9.
Buist, D. S., Gadalla, A. M. M., and White, J. (1966)
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731-41.
Chaudhry, M. N. and Howie, R. A. (1969) Axinites
from the contact skarns of the Meldon aplite,
Devonshire, England. Ibid., 37, 45-8.
Chisholm, J. E., Jones, G. C., and Purvis, O. W. (1987)
Hydrated copper oxalate, moolooite, in lichens.
Ibid., 51,715-18.
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Notice No. 91.
Clark, A. H. (1970) A probable second occurrence ofJambor's 'fibrous iron sulfide'. Am. Mineral., 55,
283-4.
Clark, A. M. and Criddle, A. J. (1982) Palladiumminerals from Hope's Nose, Torquay, Devon.
Mineral. Mag., 46, 371-7.
Fejer, E. E., Couper, A. G., von Knorring, O.,
Turner, R. W., and Barstow, R. W. (1983) Iron-richroscherite from Gunnislake, Cornwall. Ibid., 47,
81-3.
- - - - and Jones, G. C. (1984) Sweetite, a newmineral from Derbyshire. Ibid., 48, 267-9.
-Couper, A. G., Embrey, P. G., and Fejer, E. E.
(1986) Waylandite: new data, from an occurrence inCornwall, with a note on 'agnesite'. Ibid., 50,731-3.
Fejer, E. E., Cressey, G., and Tandy, P. C. (1988)
Ashoverite, a new mineral, and other polymorphs of
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Zn(OH)2 from Milltown, Ashover, Derbyshire.
Ibid., 52, 699-702.
Clifford, J. A., Ryan, P., and Kucha, H. (1986) A
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Corazza, M., Corsini, F., and Tanclli, G. (1986)
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Davis, A. G. (1967) The mineralogy and phase equilibrium of Keuper Marl. Quart. J. Eng. Geol., 1, 25-38.
Dean, A. C. (1982) First British occurrence of cumeng6ite. J. Russell Soc., 1, No. 1, 40-4l.
Symes, R. F., Thomas, J. H., and Williams, P. A.
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Dearman, W. R. (1965) Bismuth and molybdenite from
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Dunn, P. J. (1990) Andrewsite and laubmannite
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Leavens, P. B., and Barnes, C. (1980) Magnesioaxinite from Luning, Nevada, and some nomenclature designations for the axinite group. Mineral.
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E1Sharkawi, M. A. H. and Dearman, W. R. (1966) Tinbearing skarns from the North-west border of theDartmoor Granite, Devonshire, England. Econ.
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Elton, N. J. and Hooper, J. J. (1992) Andersonite andschr6ckingerite from Geevor mine, Cornwall: two
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Embrey, P. G. and Symes, R. F. (1987) Minerals of
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Fortey, N. J., Ingham, J. D., Skilton, B. R. H., Young,B., and Shepherd, T. J. (1984) Antimony mineralisation at Wet Swine Gill, Caldbeck Fells, Cumbria.
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George, M. C., Stone, M., Fejer, E. E., and Symes,
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(1988) An occurrence of akagan6ite (13FeOOH.C1) in recent oxidized carbonate concretions, Norfolk, England. Mineral. Mag., 52, 125~5.
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(1991a) Ktenastie, from Smallcleugh mine, Nent-

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1

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8

8

b

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MINERALS FROM THE BRITISH ISLES
head, Cumbria, the first British occurrence. UK
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(1991b) The minerals of Milltown quarry,
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Symes, R, F., Wirth, M., and Young, B. (1991)
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Cooper, M. P., Nancarrow, P. H. A., and Green,
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25~8.
Young, B. R., Young, B., and Raine, A. T. (I985)
Thenardite (Na2SO4), a mineral new to Britain, from
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Zav'yalov, E. N. and Begizov, V. D. (1981a) [The new
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(1981b) [Once more on the problem ofgrtinlingite. 1 Ibid., 633-5.
Zwaan, P. C., Arps, C. E. S., and de Grave, E. (1989)
Vochtenite,(Fe2+ ,Mg)Fe3+ [UO2/POa]a(OH). 1213H20, a new uranyl phosphatc mineral from Wheal
Basset, Redruth, Cornwall, England. Mineral. Mag.,53, 473-8.

--]Manuscript received 25 July 1991]