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Chrisstanleyite: Ag2Pd3Se4 Tischendorfite: Pd8Hg3Se9 Tiemannite: HgSe
Comments: Polished section (PPL) showing tischendorfite (T, cream), clausthalite (Cl, off-white), tiemannite (Tie, gray), ankerite (black) and chrisstanleyite (C, greenish buff to pale brown). Location: Eskaborner Stollen (Eskeborn Adit) at Tilkerode, Harz, Mountains, Germany. (CanMin v40:739). Scale: Picture Size 275 µm. © Canadian Mineralogist
Christelite: Zn3Cu2(SO4)2(OH)6·4(H2O) Paratacamite: (Cu,Zn)2(OH)3Cl
Comments: Robins-egg blue christelite with dark green paratacamite on matrix. Location: San Francisco mine, Sierra Gorda, Chile. Scale: 3 cm. © John Veevaert
Chromatite: CaCrO4
Comments: Yellow, powdery coating of chromatite over carbonate rock. Associated minerals in the crust are halite and fluorapatite. Location: Ma'aleh Adumim, Hatrurim formation, West Bank, Palestine. Scale: Box Size 29x29 mm. © Pavel M. Kartashov
Chrombismite: Bi16CrO27
Comments: B&W image showing the relationship of grains of chrombismite to grains of chalcopyrite, pyrite and gold. (CanMin, v35:35). Location: Quartz veins in the Jialu gold nine, Luonan County, Shaanxi Province, China. Scale: Feld of view: 0.12 mm. © Canadian Mineralogist
Chromceladonite: KCrMg(Si4O10)(OH)2
Comments: Greenish gray, pearly aggregate of chromceladonite. Location: Srednaja Padma, Onega Karelia, Russian Federation. Scale: Box Size 2 x 2 cm. © Sonke Stolze / Systematic Minerals
Chromdravite: NaMg3(Cr,Fe+++)6(BO3)3Si6O18(OH)4
Comments: Dark green chromdravite grains in matrix. Location: Srednyaya Padma U-V deposit, Zaonezhie peninsula, Lake Onega, Karelia Republic, Northern Region, Russia. Scale: Specimen Size 2 cm. © Jeff Weissman / Photographic Guide to Mineral Species
Chromferide: Fe3Cr1-x (x=0,6)
Comments: Irregular nugget of chromferide. Location: Verchnevinsk, Ural, Russia. Scale: Nugget Size 1.5 mm. © Thomas Witzke
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
Chromite: Fe++Cr2O4 Theophrastite: Ni(OH)2
Comments: Green pearly scaly theophrastite coatings on massive dark chromite. Location: Vermion Region, near Thessaloniki, Kedriki Makedhonia, Greece. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Chromium: Cr
Comments: Small silvery-gray metallic grain of native chromium. Location: Sichuan, China. Scale: Grain size 0.7 mm. © Thomas Witzke / Abraxas-Verlag