C

Cabalzarite


Cacoxenite


Cafarsite


Calcioancylite


Calcioaravaipaite


Calcioferrite


Calciostrontianite


Calcite


Calderonite


Caledonite


Callaghanite


Camerolaite


Campylite (Mimetite)


Canavesite


Cancrinite


Cannizzarite


Capranicaite


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


Challacolloite


Chamosite


Chayesite


Chenevixite


Chevkinite-(Ce)


Chiavennite


Childrenite


Chlorargyrite


Chrome-bearing Grossular (Garnet Group)


Chromium-bearing clinochlore


Chlorite


Chloroxiphite


Chondrodite


Chrysocolla


Churchite-(Y)


Cinnabarite


Claraite


Claudetite


Cleophane (Sphalerite)


Clinoatacamite


Clinochlore


Clinoclase


Clinoferrisilite


Clinoptilolite


Clinoptilolite-(Ca)


Clinopyroxene


Clinozoisite


Cobaltaustinite


Cobaltkoritnigite


Cobaltlotharmayerite


Cobaltocalcite


Cobaltomenite


Conichalcite


Connellite


Copiapite


Cordierite


Corkite


Cornetite


Cornubite


Cornwallite


Coronadite


Corundum


Cosalite


Covellite


Cowlesite


Crandallite  Group


Creaseyite


Creedite


Cristobalite


Crocoite


Cronstedtite


Crossite


Cryptomelane


Cumengeite