Calcite

Calcitization

Cancrinite

Cassiterite

Celadonitization

Chabazite

Chalcedony

Chalcocite

Chalcopyrite

Chlorite

Chloritization

Chloritoid

Cinnabar

Clay minerals

Clinohumite

Copper

Covellite

Cristobalite

Cummingtonite

Cuprite

Cymatolite

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