C

Cabalzarite


Cacoxenite


Cafarsite


Calcioancylite


Calcioaravaipaite


Calcioferrite


Calcite


Caledonite


Callaghanite


Campylite (Mimetite)


Canavesite


Cancrinite


Cannizzarite


Carletonite


Carlhintzeite


Carminite


Carnotite


Carrolite


Cassiterite


Castellaroite


Catapleiite


Cavansite


Celadonite (Smectite Group)


Celestite


Ceruleite


Cerussite


Cervantite


Cetineite


Chabazite


Chabazite-(Na) (formerly called Herschelite)


Chalcanthite


Chalcedony


Chalcoalumite


Chalcophanite


Chalcophyllite


Chalcopyrite


Chalcosiderite


Chalcosiderite-turquoise series


Chalcosite


Chamosite


Chayesite


Chenevixite


Chiavennite


Childrenite


Chlorargyrite


Chrome-bearing Grossular (Garnet Supergroup)


Chromium-bearing clinochlore


Chlorite


Chloroxiphite


Chrysocolla


Churchite-(Y)


Cinnaber


Claraite


Claudetite


Cleophane (Sphalerite)


Clinoatacamite


Clinochlore


Clinoclase


Clinoferrisilite


Clinoptilolite


Clinopyroxene


Clinozoisite


Cobaltaustinite


Cobaltkoritnigite


Cobaltocalcite


Cobaltomenite


Conichalcite


Connellite


Cordierite


Corkite


Cornetite


Cornubite


Cornwallite


Coronadite


Corundum


Cosalite


Covellite


Cowlesite


Crandallite  Group


Creedite


Cristobalite


Crocoite


Cronstedtite


Crossite


Cryptomelane


Cumengeite


Cuprite


Cuprian adamite


Cuprosklodowskite


Curite


Cyanotrichite


Cyrilovite