Geographic Minerals

Cerussite (also known as lead carbonate or white lead ore) is a mineral consisting of lead carbonate (PbCO3), and an important ore of lead. The…

Cerium is a chemical element with symbol Ce and atomic number 58. Cerium is a soft, ductile and silvery-white metal that tarnishes when exposed to…

Cerite is a complex silicate mineral group containing cerium, formula (Ce, La, Ca)9(Mg, Fe+3)(SiO4)6(SiO3OH)(OH)3. It is a mineral consisting of a hydrous silicate of cerium…

Celsian is an uncommon feldspar mineral, barium aluminosilicate, BaAl2Si2O8. It is an uncommon feldspar mineral, which was first discovered in 1895 in Imfeld Binnental, Switzerland.…

Celestine or celestite is a mineral consisting of strontium sulfate (SrSO4). The mineral is named for its occasional delicate blue color. It is a strontium…

Celadonite is a mica group mineral, a phyllosilicate of potassium, iron in both oxidation states, aluminum and hydroxide with the formula: K(Mg, Fe2+)(Fe3+, Al)[Si4O10](OH)2. It…

Cavansite, whose name is derived from its chemical composition, calcium vanadium silicate, is a deep blue hydrous calcium vanadium phyllosilicate mineral, occurring as a secondary…

Cattierite (CoS2) is a cobalt sulfide mineral found in the Democratic Republic of Congo. It is a mineral consisting of cobalt sulfide and belonging to…

Cassiterite is a tin oxide mineral, SnO2. It is a reddish, brownish, or yellowish mineral consisting of tin dioxide. It is the main ore of…

Caryopilite (synonymous with ectropite and ektropite) is a brown-colored mineral with formula (Mn2+, Mg)3Si2O5(OH)4. It is tiny brown-red spherules of caryopilite in clusters to <1mm…

Carrollite, CuCo2S4, is a sulfide of copper and cobalt, often with the substantial substitution of nickel for the metal ions, and a member of the…

Carpholite is a manganese silicate mineral with formula Mn2+Al2Si2O6(OH)4. It occurs as yellow clusters of slender prisms or needles. It crystallizes in the orthorhombic system.…