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Strassmannite

Al(UO2)(SO4)2F·16H2O

Sulfur

S

Orthorhombic H: 1.5-2.5

Svanbergite

SrAl3(SO4)(PO4)(OH)6

Tennantite-(In)

Cu6(Cu5In)As4S13

Tetrahedrite-(Cu)

Cu6(Cu4Cu2)Sb4S13

Thaumasite

Ca3Si(OH)6(CO3)(SO4)·12H2O

Titanium

Ti

Tianhuixinite

(MoO3)3·H2O

Tilkerodeite

Pd2HgSe3

Tennantite-(Mn)

Cu6(Cu4Mn2)As4S13

Tetrahedrite-(Cd)

Cu6(Cu4Cd2)Sb4S13

Tetrataenite

FeNi

Tin

Sn

Toledoite

TiFeSi

Tourmaline

Complex borosilicate

Trigonal H: 7.0-7.5

Tongbaite

Cr3C2

Topaz

Al2SiO4(F,OH)2

Orthorhombic H: 8.0

Torryweiserite

Rh5Ni10S16

Toturite

Ca3Sn2(SiFe3+2)O12

Tsumebite

Pb2Cu(PO4)(SO4)(OH)

Tungsten

W

Vanderheydenite

Zn6(PO4)2(SO4)(OH)4·7H2O

Virgilluethite

MoO3·H2O

Vanuralite

Al(UO2)2(VO4)2(OH)·8.5H2O

Vegrandisite

BaCl2

Vladkuzminite

K4CuZn3(AsO4)4

Vielleaureite-(Ce)

Mn2+Ce(MgAlMn2+)(Si2O7)(SiO4)F(OH)

Vihorlatite

Bi24Se17Te4

Vadlazarenkovite

Pd8Bi1.5Te1.25As0.25

Vaniniite

Ca2Mn2+3Mn3+2O2(AsO4)4·2H2O

Vapnikite

Ca2CaUO6

Vlasovite

Na2ZrSi4O11

Weilerite

BaAl3(SO4)(AsO4)(OH)6

Whiterockite

CaMgMn3+3O2(PO4)2(CO3)F(H2O)5

Wiperamingaite

NaCaFe3+Al(PO4)F5(OH)·H2O

Wattevilleite

Na2Ca(SO4)2·4H2O (?)

Whiteite-(CaMnFe)

CaMnFe2Al2(PO4)4(OH)2·8H2O

Zhanghengite

CuZn

Xenotime-(Gd)

Gd(PO4)

Yamhamelachite

KCrP2O7

Zincaluminite

(Zn1-xAlx)(SO4)x/2(OH)2·nH2O (x < 0.5, n > 3x/2)

Gypsum

CaSO4 · 2H2O

Monoclinic H: 1.5-2.0

Corundum

Al2O3

Trigonal H: 9.0

Malachite

Cu2(CO3)(OH)2

Monoclinic H: 3.5-4.0

Copper

Cu

Cubic (Isometric) H: 2.5-3.0

Kyanite

Al2SiO5

Triclinic H: 4.5-7.0

Epidote

Ca2(Al,Fe)3(SiO4)(Si2O7)O(OH)

Monoclinic H: 6.0-7.0

Hematite

Fe2O3

Trigonal H: 5.0-6.5