willemite
A rare mineral, anhydrous zinc silicate, Zn₂SiO₄, that is a minor ore of zinc.

willemites
plural of willemite

wiluite
A dark green, brownish, or black blocky silicate mineral.

withamite
A reddish variety of epidote, found in Scotland.

withamites
plural of withamite

wollastonite
A grey inosilicate mineral, mostly calcium silicate, CaSiO₃, found deposited in limestone.

wollastonites
plural of wollastonite

xilingolite
A grey mineral with metallic lustre, having the chemical formula Pb₃Bi₂S₆.

ximengite
A trigonal mineral with chemical formula BiPO₄.

xiphonite
A scoriaceous amphibole with yellow crystals.

xitieshanite
A conchoidal green or yellow mineral with the chemical formula Fe³⁺(SO₄)(OH)·7H₂O.

xonaltite
A hydrous silicate of calcium, occurring in massive form of a white or bluish‐gray colour.

xonotlite
A mineral with the chemical formula Ca₆Si₆O₁₇(OH)₂, found in various colours.

yangite
A chain-silicate mineral with the formula PbMnSi₃O₈•H₂O.

yttrialite
A rare, highly radioactive yttrium thorium sorosilicate mineral with conchoidal fracture.

yttrialites
plural of yttrialite

yuksporite
A rare pink inosilicate mineral with orthorhombic crystals.

zakharovite
A silicate mineral of sodium and manganese, yellow in colour with a pearly lustre.

zeolite
Any of several minerals, aluminosilicates of sodium, potassium, calcium or magnesium, that have a porous structure (originally, those which swelled and gave off water when heated); they are used in water softeners, in ion exchange chromatography, and as industrial catalysts.

zeolites
plural of zeolite

zeuxite
A form of green tourmaline.

zhemchuzhnikovite
A mineral of organic origin with chemical formula NaMg(FeAl)C₂O₄.8H₂O, forming smoky green crystals with a vitreous lustre.

zimbabweite
A yellow-brown mineral with chemical formula (Na,K)₂PbAs₄(Nb,Ta,Ti)₄O₁₈, generally classed as an arsenite.

zinalsite
A supposed zinc aluminium silicate mineral, not officially recognised.

zinalsites
plural of zinalsite

zincocalcite
A mineral with chemical formula (Ca,Zn)CO₃.

zinnwaldite
A mineral with monoclinic crystals, KLiFe²⁺Al(AlSi₃)O₁₀(F,OH)₂, of the mica group.

zinnwaldites
plural of zinnwaldite

zircon
A mineral occurring in tetragonal crystals, usually of a brown or grey colour and consisting of silica and zirconia.
A crystal of zircon, sometimes used as a false gemstone.

zircons
plural of zircon

zircophyllite
A complex mineral with the chemical formula (K,Na)₃(Mn,Fe)₇(Zr,Ti,Nb)₂Si₈O₂₄(OH,F)₇.

zircophyllites
plural of zircophyllite

znucalite
A fluorescent radioactive mineral with the chemical formula CaZn₁₁(UO₂)(CO₃)₃(OH)₂₀·4(H₂O).

zorite
A pink silicate mineral.

zunyite
A fluorosilicate mineral of alumina occurring in tetrahedral crystals, chemical formula Al₁₃Si₅O₂₀(OH,F)₁₈Cl.

zussmanite
A hydrated iron-rich silicate, found as a pale green crystal with perfect cleavage.

zussmanites
plural of zussmanite

zvyagintsevite
A white opaque metallic mineral with the chemical formula (Pd,Pt,Au)₃(Pb,Sn).

acmonidesite
An orthorhombic sulfate chloride mineral with the chemical formula (NH₄,K,Pb)₈NaFe²⁺₄(SO₄)₅Cl₈.

adranosite
A tetragonal sulfate chloride mineral with the chemical formula (NH₄)₄NaAl₂(SO₄)₄Cl(OH)₂.

aiolosite
A hexagonal sulfate chloride mineral with the chemical formula Na₄Bi(SO₄)₃Cl.

alaite
A rare hydrous arsenate sulfate mineral with the chemical formula V₂O₅·H₂O.

aluminilite
alunite

aluminocoquimbite
A trigonal mineral that is a hydrated aluminium, iron sulphate

alumite
Alternative form of alunite.

alumites
plural of alumite

alunite
A gray whitish, water-soluble mineral, potassium aluminium sulphate; the natural source of alum, KAl₃(SO₄)₂(OH)₆.

alunites
plural of alunite

alunogen
An aluminium sulfate mineral often found on the walls of mines and quarries.

anglesite
A crystalline mineral form of lead sulfate, PbSO₄, formed by the weathering of galena.

anhydrite
An evaporite mineral made of anhydrous calcium sulfate.

anhydrites
plural of anhydrite

anhydrokainite
A sulfate chloride mineral with the chemical formula KMg(SO₄)Cl.

antlerite
A greenish hydrous copper sulfate mineral.

aphthitalite
An evaporite consisting of mixed potassium and sodium sulphates; also found in the fumaroles of volcanos.

aphthitalites
plural of aphthitalite

arcanite
Potassium sulfate.

arzrunite
A biaxial orthorhombic sulfate chloride mineral.

astrakanite
An evaporite consisting of a mixed sodium and magnesium sulphate.

barite
A mineral, barium sulphate, with the chemical formula BaSO₄.

barites
plural of barite

baryte
Alternative form of barite.

barytes
Barite.
plural of baryte

bassanite
An evaporite, consisting of calcium sulfate, found at Vesuvius.

belousovite
A monoclinic sulfate chloride mineral with the chemical formula KZn(SO₄)Cl.

bloedite
Alternative spelling of blödite.

bluelizardite
A pale yellow monoclinic sulfate chloride mineral with the chemical formula Na₇(UO₂)(SO₄)₄Cl(H₂O)₂.

bobmeyerite
An orthorhombic sulfate chloride mineral with the chemical formula Pb₄(Al₃Cu)(Si₄O₁₂)(S_(0.5)Si_(0.5)O₄)(OH)₇Cl(H₂O)₃.

botryogen
A hydrous magnesium sulfate mineral.

brochantite
A basic copper sulfate mineral

brochantites
plural of brochantite

bukovskyite
An iron arsenate sulfate mineral that forms nodules with a reniform surface.

bukovskyites
plural of bukovskyite

calciolangbeinite
A mineral found in Russia, containing potassium, calcium and sulfate.

carphosiderite
A basic, hydrated form of ferric sulfate

carphosiderites
plural of carphosiderite

chalcanthite
A mineral form of copper sulfate, CuSO₄.

chalcanthites
plural of chalcanthite

chlorellestadite
A hexagonal sulfate chloride mineral with the chemical formula Ca₁₀(SiO₄)₃(SO₄)₃Cl₂, found in Europe and Cuba.

chukhrovite
Any of a group of rare sulfate-fluoride minerals.

clinotyrolite
A polytype of tyrolite, considered to be a synonym of tangdanite.

connellite
A rare hexagonal hydrous copper chlorosulfate mineral with the chemical formula Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O.

connellites
plural of connellite

coquimbite
The nonahydrate of iron(III) sulfate.

cyanosite
chalcanthite (a copper sulfate)

cyanotrichite
A rare, blue, orthorhombic copper aluminium sulfate mineral.

cyanotrichites
plural of cyanotrichite

diadochite
A phosphosulfate mineral with a greenish-yellow to brown colour.

epsomite
An evaporite, consisting of magnesium sulphate, also found in fumaroles, with the chemical formula MgSO₄·7H₂O.

epsomites
plural of epsomite

ettringite
A trigonal hydrous calcium aluminium sulfate mineral.

ettringites
plural of ettringite

euchlorin
Alternative form of euchlorine.

euchlorine
A rare emerald-green sulfate mineral found as a natural sublimate in fumaroles around volcanic eruptions, and having the chemical formula KNaCu₃(SO₄)₃O).
A yellow or greenish-yellow gas, supposed to consist of chlorine dioxide with some free chlorine.

fluorellestadite
A rare nesosilicate of calcium, with sulfate and fluorine, belonging to the apatite group.

fluorellestadites
plural of fluorellestadite

glaserite
An evaporite, consisting of potassium sulphate.

glauberite
An evaporite, consisting of a mixed sodium and calcium sulphate, with the chemical formula Na₂Ca(SO₄)₂.

gordaite
A trigonal-pyramidal sulfate chloride mineral with the chemical formula NaZn₄(SO₄)(OH)₆Cl · 6H₂O.

gypboard
Alternative form of gypsum board.

gypsa
plural of gypsum

gypse
Obsolete form of gypsum.

gypsum
A mineral consisting of hydrated calcium sulphate. When calcinated, it forms plaster of Paris.

gypsumboard
Alternative form of gypsum board.

gypsums
plural of gypsum

hauynite
Alternative form of haüynite.

hauynites
plural of hauynite

hexahydrite
An evaporite, consisting of magnesium sulphate hexahydrate.

hydrocyanite
anhydrous copper sulfate

jachymovite
A basic uranyl sulfate found associated with dolomite.

johannite
A rare green uranium sulfate mineral.