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Cesplumtantite: (Cs,Na,Ca)2(Pb,Sb+++,Sn)3Ta8O24
Comments: Brownish yellow cesplumtantite aggregate grains. Location: Manono, Shaba, Congo. Scale: See Image. © Rruff Database
Cesstibtantite: (Cs,Na)SbTa4O12
Comments: Flesh-coloured simpsonite (blue scheelite-like UV luminescention) crystal partially replaced with grey cesstibtantite (orange UV luminescention).. Location: Vasin-Myl'k Mt, Voron'i Tundry, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Specimen size is 6x5x2 cm. © Pavel M. Kartashov
Cetineite: (K,Na)3+x(Sb2O3)3(Sb2S3)(OH)x·(2.8-x)(H2O) Valentinite: Sb2O3
Comments: Orange-reddish acicular crystals of cetineite with white valentinite. Location: Cetine di Cotorniano mine (Cetine mine), Rosia, Siena, Tuscany, Italy. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Chabazite-Ca: (Ca0.5,Na,K)4[Al4Si8O24]·12H2O
Comments: Colorless hexagonal plates of chabazite. Location: Boral quarry, Bundoora, Victoria, Australia. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Comments: Twinned, white, blocky crystals of chabazite on basalt matrix. Location: Richmond, Melbourne, Victoria, Australia. Scale: 7x6x2 cm. © John Betts - Fine Minerals
Comments: Pinkish orange colored chabazite-Ca displaying a blocky, near-cubic form of triclinic crystals. Location: Imilchil, Anti-Atlas Morocco. Scale: 4.2 x 3.7 x 1.6 cm. © Fabre Minerals
Chabazite-K: (K2,Ca,Na2,Mg)[Al2Si4O12]·6(H2O)
Comments: Minute colorless crystals of chabazite-K on matrix. Location: Tyul'bnyunuai River Valley, Lovozero Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture Size 0.6 mm. © Jeff Weissman / Photographic Guide to Mineral Species
Chabazite-Na: (Na2,K2,Ca,Mg)[Al2Si4O12]·6(H2O) Herschelite: (Na,Ca,K)AlSi2O6·3(H2O)
Comments: Rounded transparent crystals of chabazite-Na (herschelite). Location: Horseshoe Dam, Maricopa County, Arizona, USA. Scale: Not Given. © Lou Perloff / Photo Atlas of Minerals
Chabourneite: (Tl,Pb)21(Sb,As)91S147 Smithite: AgAsS2
Comments: Black metallic chabourneite with conchoidal fracture, associated with yellow-red realgar and deep-red smithite. Location: Jas Roux, Pelvoux Mt., Valgaudemar, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France. Scale: See Image. © Rruff Database
Chaidamuite: (Zn,Fe++)Fe+++(SO4)2(OH)·4(H2O)
Comments: Pale yellow earthy coatings of chaidamuite with brown limonite on friable matrix. Location: Getchell Mine, Humboldt County, Nevada, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Chalcanthite: CuSO4·5(H2O) Chalcocyanite: CuSO4
Comments: White to pale bluish chalcocyanite with darker bluish chalcanthite. The mineral is hygroscopic and must be stored in a closed box. Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Chalcanthite: CuSO4·5(H2O) Dolerophanite: Cu2(SO4)O Fedotovite: K2Cu++3(SO4)3O
Comments: Brown crystals of dolerophanite with blue chalcanthite and green fedotovite. Location: Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 3 mm. © Thomas Witzke / Abraxas-Verlag
Chalcanthite: CuSO4·5(H2O) Fedotovite: K2Cu++3(SO4)3O
Comments: Green fedotovite with pale blue chalcanthite. Location: Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Chalcanthite: CuSO4·5(H2O)
Comments: Fibrous columnar crystalline chalcanthite. Location: Planet Mine, La Paz County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Chalcoalumite: CuAl4(SO4)(OH)12·3(H2O)
Comments: Pale bluish stellate twins of chalcoalumite on matrix. Location: Lavender Pit, Bisbee, Cohchise County, Arizona, USA. Scale: Size Not Given. © Lou Perloff / Photo Atlas of Minerals
Chalcocite: Cu2S
Comments: Chalcocite crystals in this specimen vary in size up to 1.2 cm across. Location: Bristol nr. Hartford, Connecticut, USA. Scale: 7.6 x 4 cm. © John Veevaert
Chalcocite: Cu2S Eskolaite: Cr2O3
Comments: Green crystalline eskolaite on massive chalcocite. Location: Lubelin, Poland. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Chalcocyanite: CuSO4 Chalcanthite: CuSO4·5(H2O)
Chalcomenite: CuSeO3·2(H2O)
Comments: Blue crystals of chalcomenite on matrix. Location: El Dragón mine, Quijarro province, Potosí, Bolivia. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag
Chalconatronite: Na2Cu(CO3)2·3(H2O)
Comments: Crystalline crusts of blue chalconatronite on sandstone. Location: Slick Rock, Egnar Area, San Miguel County, Colorado, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species