Ceylonite: Properties and Occurrence
Ceylonite is dingy blue or grey with black varieties of spinel. It is a dark-colored spinel, called also pleonaste. It was named after the island…
Geographic Minerals
Carnelian: Properties and Occurrences
Carnelian is a brownish-red mineral commonly used as a semi-precious gemstone. It is the red, orange, or an amber variety of Chalcedony. In ancient Egypt,…
Cementite
Cementite is an intermetallic compound of iron and carbon, more precisely intermediate transition metal carbide with the formula Fe3C. It is iron carbide, a constituent…
Campylite: Properties and Occurrences
Campylite is a variety of the lead arsenate mineral mimetite which received the name from the Greek ‘kampylos’- bent, on account of the barrel-shaped bend…
Chabazite: Properties and Occurrences
Chabazite is a tectosilicate mineral of the zeolite group, closely related to gmelinite, with formula (Ca, Na2, K2, Mg)Al2Si4O12·6H2O. It was named after the Greek…
Cyrilovite
Cyrilovite, formula- [NaFe33+(PO4)2(OH)4·2(H2O)] is a hydrous sodium iron phosphate mineral. It is a tetragonal-trapezohedral mineral containing hydrogen, iron, oxygen, phosphorus, and sodium. It is isomorphous and…
Cymrite: Properties and Occurrences
Cymrite is a silicate mineral with the chemical formula BaAl2Si2(O, OH)8·H2O. It is a rare mineral consisting of a basic aluminosilicate of barium and belonging…
Cylindrite: Properties and Occurrences
Cylindrite is a sulfosalt mineral containing tin, lead, antimony, and iron with the formula: Pb3Sn4FeSb2S14. It is a most unusual sulfide mineral. It is a…
Cyanotrichite
Cyanotrichite is a hydrous copper aluminum sulfate mineral with formula Cu4Al2[(OH)12|SO4]·2H2O, also known as lettsomite. It is a rare, blue, orthorhombic copper aluminum sulfate mineral.…
Cuspidine: Properties and Occurrences
Cuspidine is a fluorine bearing calcium silicate mineral (sorosilicate) with the formula: Ca4(Si2O7)(F, OH)2. It is a mineral consisting of a basic silicate of calcium,…
Curite: Properties and Occurrences
Curite is a lead uranium oxide mineral with formula: Pb3(UO2)8O8(OH)6·3(H2O). It is named after the physicists Marie and Pierre Curie, who are both known for…
Cuprospinel: Properties and Occurrences
Cuprospinel is an inverse spinel with the formula CuFe2O4, where copper substitutes some of the iron cations in the structure. It is an isometric-hexoctahedral black…
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