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Calcioferrite: Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4·12(H2O)
Comments: Whitish green botryoidal crust of calcioferrite on matrix. Location: Brugues, Barcelona, Catalunya, Spain. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Calderite: (Mn++,Ca)3(Fe+++,Al)2(SiO4)3
Comments: Dark red brown translucent crystalline calderite. Location: Hazaribag, Bihar, India. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Calumetite: Cu(OH,Cl)2·2(H2O)
Comments: Light blue botryoidal coatings of calumetite on tarnished copper with green paratacamite. Location: Centennial Mine, Houghton County, Michigan, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Calzirtite: CaZr3TiO9 Augite: (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6 Richterite: Na(CaNa)(Mg,Fe++)5[Si8O22](OH)2
Comments: Gray irregular grain of calzirtite (see arrow) in fibrous augite with dark red richterite. Location: Jacupiranga Mine, Cajati, Sao Paulo, Brazil. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Caminite: Mg7(SO4)5(OH)4·(H2O)
Comments: White crystalline massive caminite. Location: Nepian Deposit, East Siberian Salt Basin, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Campigliaite: Cu4Mn(SO4)2(OH)6·4(H2O)
Comments: Sparse pale blue coatings of campigliaite on matrix. Location: Richfield, Sevier County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Canasite: (Na,K)6Ca5Si12O30(OH,F)4
Comments: Yellow translucent canasite grain with nepheline. Location: Kirovskii Mine, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Cancrisilite: Na7Al5Si7O24(C03)·3(H2O)
Comments: Light pink crystalline cancrisilite. Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Cannonite: Bi2O(OH)2SO4 Bismuthinite: Bi2S3
Comments: Opaque white crystal tufts of cannonite on quartz crystals with dark, metallic bismuthinite. Location: Marysvale, Piute County, Utah, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Caracolite: Na3Pb2(SO4)3Cl
Comments: Nearly transparent colorless thin crystalline crust of caracolite. Location: Iquique, Tarapaca, Chile. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Carboborite: Ca2Mg(CO3)2B2(OH)8·4(H2O)
Comments: Pure crystalline cleavage fragment of carboborite. Location: Inlamartit, Turkey. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Carlfriesite: CaTe++++2Te++++++O8
Comments: Pale bright yellow crystalline carlfriesite botryoids on white calcite. Location: Moctezuma, Sonora, Mexico. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Carlosturanite: (Mg,Fe++,Ti,Mn)21(Si,Al)12O28(OH)34
Comments: White to tan fibrous coatings of carlosturanite on matrix. Location: Val Varaita, Cuneo, Piemonte, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Carnallite: KMgCl3·6(H2O)
Comments: Clear crystalline massive carnallite. Location: Stassfurt, Sachsen-Anhalt, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Carnallite: KMgCl3·6(H2O) Rokuhnite: Fe++Cl2·(H2O)
Comments: Reddish brown rokuhnite, with carnallite (deliquescent). Location: Salzdetfurth Mine, Hildesheim, near Hanover, Niedersachsen, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Carpholite: MnAl2Si2O6(OH)4
Comments: Golden yellow compact radiating massive carpholite. Location: Schlaggenwald, Bohemia, Zapadocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Carrboydite: (Ni,Cu)14Al9(SO4,CO3)6(OH)43·7(H2O)
Comments: bluish green crusts of carrboydite. Location: Carr-Boyd Nickel Mine, Western Australia, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Caryinite: (Na,Pb)(Ca,Na)(Ca,Mn++)(Mn++,Mg)2(AsO4)3 Rhodonite: (Mn++,Fe++,Mg,Ca)SiO3
Comments: Yellow crystalline caryinite with pink rhodonite. Location: Langban, Varmland, Sweden. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Cassedanneite: Pb5(VO4)2(CrO4)2·(H2O)
Comments: Crystalline mass of cassedanneite, colored green by included descloizite. Location: Berezovskoye Mine, near Yekaterinburg, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Cattierite: CoS2 Siegenite: (Ni,Co)3S4
Comments: Pinkish metallic cattierite, intergrown with gray siegenite. Location: Shinkolobwe, Katanga, Shaba, Zaire. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species