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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
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