Minerals

Cobaltkieserite

Co(SO4)·H2O

Cobaltkoritnigite

Co(AsO3OH)·H2O

Cobaltlotharmeyerite

CaCo2(AsO4)2·2H2O

Cobaltneustädtelite

Bi2Fe3+(Co,Fe3+)(AsO4)2(O,OH)4

Cobaltoblödite

Na2Co(SO4)2·4H2O

Cobaltomenite

Co(Se4+O3)·2H2O

Cobaltpentlandite

Co9S8

Cobalttsumcorite

PbCo2(AsO4)2·2H2O

Cobaltzippeite

Co(UO2)2(SO4)O2·3.5H2O

Coccinite

HgI2

Cochromite

CoCr2O4

Coconinoite

Fe3+2Al2(UO2)2(PO4)4(SO4)(OH)2·20H2O

Coesite

SiO2

Coffinite

U(SiO4)·nH2O

Cohenite

CFe3

Coiraite

(Pb,Sn)12.5As3Sn5FeS28

Colchesterite

Bi3+2Mo6+2O9

Coldwellite

Pd3Ag2S

Colemanite

CaB3O4(OH)3·H2O

Colimaite

K3VS4

Colinowensite

BaCuSi2O6

Collinsite

Ca2Mg(PO4)2·2H2O

Colomeraite

NaTi3+Si2O6

Coloradoite

HgTe

Colquiriite

CaLiAlF6

Columbite-(Fe)

Fe2+Nb2O6

Columbite-(Mg)

MgNb2O6

Columbite-(Mn)

Mn2+Nb2O6

Colusite

Cu13VAs3S16

Comancheite

Hg2+55N3-24(NH2,OH)4(Cl,Br)34

Combeite

Na4.5Ca3.5Si6O17.5(OH)0.5

Comblainite

Ni4Co3+2(OH)12(CO3)·3H2O

Compreignacite

K2(UO2)6O4(OH)6·7H2O

Congolite

Fe2+3B7O13Cl

Conichalcite

CaCu(AsO4)(OH)

Connellite

Cu36(SO4)(OH)62Cl8·6H2O

Cookeite

(Al,Li)3Al2(Si,Al)4O10(OH)8

Coombsite

KMn2+13(Si,Al)18O42(OH)14

Cooperite

PtS

Coparsite

Cu2+4O2(AsO4)Cl

Copiapite

Fe2+Fe3+4(SO4)6(OH)2·20H2O

Copper

Cu

Cubic (Isometric) H: 2.5-3.0

Coquandite

Sb3+6+xO8+x(SO4)(OH)x(H2O)1-x (x = 0.3)

Coquimbite

AlFe3(SO4)6(H2O)12·6H2O

Coralloite

Mn2+Mn3+2(AsO4)2(OH)2·4H2O

Corderoite

Hg3S2Cl2

Cordierite

Mg2Al4Si5O18

Cordylite-(Ce)

(Na,Ca,◻)BaCe2(CO3)4(F,O)