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Chromite: Fe++Cr2O4 Antigorite: (Mg,Fe++)3Si2O5(OH)4
Comments: Chromite veins in yellow to green antigorite with picrolite, chromian antigorite and dolomite (polished section). Location: Wood's Mine, near 'Texas', Little Britain Township, Lancaster County, Pennsylvania, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Chvaleticeite: (Mn++,Mg)SO4·6(H2O)
Comments: Powdery mass of chvaleticeite. Location: Chvaletice, Bohemia, Vychodocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Claringbullite: Cu++4(OH)7Cl
Comments: Velvety micro botryoids of claringbullite lining vug in slag. Location: Val Varenna, Pegli, Genova, Liguria, Italy. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Clausthalite: PbSe
Comments: black massive and botryoidal clausthalite on matrix. Location: Lasovice, Mittelbuhmen, Stredocesky, Czech Republic. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Clinochalcomenite: CuSeO3·2(H2O)
Comments: Blue-green crystalline coating of clinochalcomenite on sulfide ore. Location: Mina El Dragon, Potosi, Bolivia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Clinoenstatite: Mg2Si2O6
Comments: Crystalline massive clinoenstatite. Location: Cape Vogel, Papua New Guinea. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Clinoferrosilite: (Fe++,Mg)2Si2O6
Comments: Light green crystalline clinoferrosilite with dark green diopside. Location: Bushveld Complex, Merensky Reef, Rustenberg, Northern Province, South Africa. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Clinoholmquistite: [ ](Li2Mg3Al2)Si8O22(OH)2 Magnesioclinoholmquistite: Li2(Mg,Fe++)3Al2Si8O22(OH)2 Fluoro-sodic-pedrizite: NaLi2(Mg2Al2Li)S5Si8O22F2
Comments: Dark blue fibrous clinoholmquistite with radiating structure, variety magnesioclinoholmquistite. Clinoholmsquitite may be a new aphibole, fluoro-sodic-pedrizite.. Location: Near Murun, Republic of Sakha, Siberia, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Clinohumite: (Mg,Fe++)9(SiO4)4(F,OH)2
Comments: Orange-brown glassy crystalline clinohumite. Location: Kuhi-Lal, Pamir, Gorno-Badahsan, Tadzhikistan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Clinojimthompsonite: (Mg,Fe++)5Si6O16(OH)2 Jimthompsonite: (Mg,Fe++)5Si6O16(OH)2
Comments: Pale green to white glassy crystalline fibrous clinojimthompsonite intergrown with jimthompsonite. Location: Chester, Windsor County, Vermont, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species