Clinohedrite
Clinohedrite is a rare silicate mineral. Its chemical composition is a hydrous calcium-zinc silicate; CaZn(SiO4)·H2O. Under shortwave ultraviolet light it fluoresces a rich orange color.…
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Clinoclase: Properties and Occurrences
Clinoclase is a hydrous copper arsenate mineral, Cu3AsO4(OH)3. It is a rare secondary copper mineral. It was first known from the Wheal Gorland Mine (now…
Cleusonite: Properties and Occurrences
Cleusonite is a member of the crichtonite group of minerals with a chemical formula of (Pb, Sr)(U4+, U6+)(Fe2+, Zn)(Ti, Fe2+, Fe3+)18(O, OH)38. It was found…
Clearcreekite
Clearcreekite is polymorphous with peterbaylissite. The chemical formula of clearcreekite is Hg1+3CO3(OH)∙2H2O. It is a monoclinic-prismatic pale greenish yellow mineral containing carbon, hydrogen, mercury, and…
Clausthalite
Clausthalite is a lead selenide mineral, PbSe. It forms a solid solution series with galena PbS. is a member of the Galena Group of minerals.…
Claudetite
Claudetite is an arsenic oxide mineral with chemical formula As2O3. It is a mineral consisting of a native arsenic trioxide As2O3 crystallizing in the monoclinic…
Clarkeite: Properties and Occurrences
Clarkeite is a uranium oxide mineral of composition (Na, Ca, Pb)2(UO2)2(O, OH)3 or (Na, Ca, Pb)(UO2)O(OH)·0-1H2O. It is a rare dark brown radioactive mineral whose…
Cinnabar: Properties and Occurrences
Cinnabar is a bright red mineral consisting of mercury sulphide, sometimes used as a pigment. It refers to the common bright scarlet to a brick-red…
Chvaleticeite
Chvaleticeite is a monoclinic hexahydrite manganese magnesium sulfate mineral and soft monoclinic mineral with formula: (Mn2+, Mg)[SO4]·6(H2O). It occurs in the oxidized zone of manganese…
Chrysotile: Properties and Occurrences
Chrysotile or white asbestos is the most common serpentine asbestos used commercially and has long curly and pliable fibers. It is the most commonly encountered…
Chrysocolla: Properties and OOccurrences
Chrysocolla is a hydrated copper phyllosilicate mineral with formula: Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x<1) or (Cu, Al)2H2SiO5(OH)4·nH2O. It is a greenish-blue mineral consisting of hydrated copper silicate, occurring…
Cymophane: Properties and Occurrences
Cymophane Translucent yellowish chatoyant chrysoberyl is called cymophane or cat’s eye. It is a yellow or green opalescent variety of chrysoberyl. Cymophane has its derivation…
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