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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
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)
Comments: Fibrous columnar crystalline chalcanthite. Location: Planet Mine, La Paz County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
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
Challacolloite: KPb2Cl5
Comments: White to transparent challacolloite crystals on matrix. Location: Eruption of 1855, Mount Vesuvius, Campania, Italy. Scale: See Image. © Jeff Weissman / Photographic Guide to Mineral Species
Chamosite: (Fe++,Mg,Fe+++)5Al(Si3Al)O10(OH,O)8
Comments: Dark green sectile massive chamosite. Location: Jalgaon, Maharashtra, India. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Chaoite: C
Comments: Dark masses of chaoite intermixed with graphite on rock shocked by meteorite impact. Location: Ries Crater, Bopfingen, Bavaria, Baden-Wurttemberg. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Chelkarite: CaMgB2O4Cl2·7(H2O) (?)
Comments: Minute transparent nearly colorless microcrystals of chelkarite. Location: Chelkar, Zapadno-Kazahstan, Kazakhstan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Chenite: Pb4Cu(SO4)2(OH)6
Comments: Sky blue crystalline coating of chenite on matrix. Location: Silberhutte, Altenau, Harz Mountains, Germany. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Chernykhite: (Ba,Na)V+++,Al)2(Si,Al)4O10(OH)2
Comments: Dark green flake of chernykhite. Location: Balasauskandyk, Juzno-Kazahstan, Kazakhstan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species