0	CACOXENITE (Hydrated Iron Aluminum Phosphate Oxide Hydroxide)
0	CALAVERITE (Gold Telluride)
Sale! 1	CALCIOVOLBORTHITE (Calcium Copper Vanadate Hydroxide)
Sale! 1	CALCITE (Calcium Carbonate)
0	CALEDONITE (Copper Lead Carbonate Sulfate Hydroxide)
0	CALOMEL (Mercury Chloride)
Sale! 1	CANCRINITE (Sodium Calcium Aluminum Silicate Carbonate)
0	CARBOCERNAITE (Calcium Sodium Strontium Cerium Barium Carbonate)
0	CARLETONITE (Hydrated Potassium Sodium Calcium Carbonate Silicate Fluoride Hydroxide)
0	CARNALLITE (Hydrated Potasium Magnesium Chloride)
Sale! 1	CARNOTITE (Hydrated Potassium Uranyl Vanadate)
0	CASSITERITE (Tin Oxide)
0	CATAPLEIITE (Hydrated Sodium Zirconium Silicate)
0	CAVANSITE (Hydrated Calcium Vanadium Silicate)
Sale! 1	CELESTITE (Strontium Sulfate)
0	CERUSSITE (Lead Carbonate)
0	CHABAZITE (Hydrated Calcium Aluminum Silicate)
0	CHALCANTHITE (Hydrated Copper Sulfate)
0	CHALCOCITE (Copper Sulfide)
0	CHALCOPHYLLITE (Hydrated Copper Aluminum Sulphate Arsenate Hydroxide)
0	CHALCOPYRITE (Copper Iron Sulfide)
0	CHALCOSIDERITE (Hydrated Copper Iron Phosphate Hydroxide)
0	CHALCOTRICHITE (variety of Cuprite, Copper Oxide)
Sale! 1	CHAROITE (Hydrated Sodium Calcium Barium Strontium Silicate Hydroxide Fluoride)
0	CHENGDEITE (Iridium Iron)
0	CHILDRENITE (Hydrated Iron Manganese Aluminum Phosphate Hydroxide)
0	CHKALOVITE (Sodium Beryllium Silicate)
0	CHLORAPATITE (the chlorine rich apatite)
0	CHLORARGYRITE (Silver Chloride)
Sale! 1	CHLORITE (Iron Magnesium Aluminum Silicate Hydroxide)
0	CHONDRODITE (Magnesium Iron Silicate Fluoride Hydroxide)
0	CHROMITE (Magnesium Iron Chromium Oxide)
0	CHROMIUM (Cr)
Sale! 2	CHRYSOBERYL (Berylium Aluminum Oxide)
Sale! 2	CHRYSOCOLLA (Hydrated Copper Silicate)
0	CHRYSOTILE (variety of Serpentine, Magnesium Iron Silicate Hydroxide)
0	CHURCHITE (Hydrated Yttrium Erbium Phosphate)
0	CINNABAR (Mercury Sulfide)
0	CITRINE (variety of Quartz- Silicon Oxide)
0	CLAUSTHALITE (Lead Selenide)
0	CLEAVELANDITE (variety of Albite, Sodium Aluminum Silicate)
0	CLIFFORDITE (Uranium Tellurate)
Sale! 2	CLINOCHLORE (Magnesium Aluminum Silicate Hydroxide)
Sale! 2	CLINOCLASE (Copper Arsenate Hydroxide)
0	CLINOHEDRITE (Hydrated Calcium Zinc Silicate)
0	CLINOHUMITE (Magnesium Iron Silicate Fluoride Hydroxide)
0	CLINOPTILOLITE (Hydrated Sodium Potassium Calcium Aluminum Silicate)
0	COBALT (Co)
*	COBALTITE (Group)
0	COBALTITE (Cobalt Arsenic Sulfide)
0	COBALTOCALCITE (alternate name for Sphaerocobaltite)
0	COCONINOITE (Hydrated Iron Aluminum Uranyl Phosphate Sulfate Hydroxide)
0	COESITE (Silicon Dioxide)
0	COLEMANITE (Hydrated Calcium Borate Hydroxide)
0	COLLINSITE (Hydrated Calcium Magnesium Iron Phosphate)
0	COLUMBITE (Iron Magnesium Manganese Niobium Tantalum Oxide)
Sale! 2	CONICHALCITE (Calcium Copper Arsenate Hydroxide)
0	CONNELLITE (Hydrated Copper Sulfate Chloride Hydroxide)
0	COPIAPITE (Hydrated Iron Magnesium Sulfate Hydroxide)
0	COPPER (Cu)
0	CORDIERITE (Magnesium Aluminum Silicate)
0	CORDYLITE (Barium Cerium Lanthanum Carbonate Fluoride)
0	CORNETITE (Copper Phosphate Hydroxide)
0	CORNWALLITE (Copper Arsenate Hydroxide)
0	CORUNDUM (Aluminum Oxide)
0	COVELLITE (Copper Sulfide)
0	CREEDITE (Hydrated Calcium Aluminum Sulfate Fluoride Hydroxide)
Sale! 1	CRISTOBALITE (Silicon Dioxide)
0	CROCOITE (Lead Chromate)
0	CROCIDOLITE (asbestiform variety of Riebeckite, Sodium Iron Magnesium Silicate Hydroxide)
0	CRYOLITE (Sodium Aluminum Fluoride)
0	CUBANITE (Copper Iron Sulfide)
0	CUMENGITE (Lead Copper Chloride Hydroxide)
0	CUMMINGTONITE (Magnesium Iron Silicate Hydroxide)
0	CUPRITE (Copper Oxide)
0	CUPROADAMITE (Copper Zinc Arsenate Hydroxide)
0	CUPROSKLODOWSKITE (Hydrated Copper Uranyl Silicate)
0	CYANOTRICHITE (Hydrated Copper Aluminum Sulfate Hydroxide)
0	CYLINDRITE (Iron Lead Tin Antimony Sulfide)