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Cabalzarite: Ca(Mg,Al,Fe++)2(AsO4)2(H2O,OH)2
Comments: Brownish crystals of cabalzarite on matrix. Location: Falotta, Tinizong (Tinzen), Sursass (Oberhalbstein), Grischun (Grisons; Graubünden), Switzerland. Scale: Picture size 5 mm. © Thomas Witzke / Abraxas-Verlag
Cabriite: Pd2SnCu Sperrylite: PtAs2
Comments: Polished section (PPL) image of a ovoid grain of cabriite (Ca) rimmed by native silver (Ag) in a matrix of brownish cubanite (Cu), with tawny chalcopyrite (Cp). Surrounded on three sides by coarse, millimetric crystals of sperrylite (Sp). Location: Noril’sk-Talnakh mining district of northwestern Russia. (CanMin, v40:473). Scale: Feld of view 1.2 mm. © Canadian Mineralogist
Comments: Small crystal of dull gray cabriite on a larger tin-white sperrylite crystal. Location: Dzhezhazgan, Kazakhstan. Scale: Crystal size 1.5 mm. © John Veevaert
Cacoxenite: (Fe+++,Al)25(PO4)17O6(OH)12·75(H2O) Strengite: Fe+++PO4·2(H2O)
Comments: Lilac colored, spear-head shape crystals of strengite to 5mm in large, open vug associated with golden fibrous cacoxenite. Location: Coon Creek, Polk Co., Arkansas, USA. Scale: Picture size 2 cm. © Tom Loomis / Dakota Matrix
Cacoxenite: (Fe+++,Al)25(PO4)17O6(OH)12·75(H2O)
Comments: Radial, spherical individual crystal sprays of brownish yellow cacoxenite. Location: El Horcajo (Ciudad Real), Spain. Scale: 0.5 mm diameter. © Tom Loomis / Dakota Matrix
Cadmoindite: CdIn2S4
Comments: Tiny speck of brown cadmoindite adhered to double-stick tape mounted in an acrylic box for protection. Location: Kudriavy, Iturup Island, Russia. Scale: Speck size - Microscopic. © John Betts - Fine Minerals
Cadmoselite: CdSe
Comments: Black cadmoselite grains in quartz. Location: Republic of Tuva, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Cadwaladerite: Al(OH)2Cl·4(H2O)
Comments: Yellow crystalline grain of cadwaladerite, somewhat deliquescent. Location: Cerro Pintados, south east of Iquique, Tarapaca, Chile. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Cafarsite: Ca8(Ti,Fe++,Fe+++,Mn)6-7(As+++O3)12·4(H2O)
Comments: Small, cubic crystal of cafarsite on matrix. Location: Wannigletscher, Binntal, Switzerland. Scale: Crystal size 0.5 cm. © Rob Lavinsky
Comments: Octahedron of cafarsite with a green coloration (?) on a gneiss matrix. Location: Vasl D' Aosta, Italy. Scale: 4.6x4.5x3.2 cm. © Isaias Casanova / IC Minerals