Mineral Specimen Images (C)

Charoite: K5Ca8(Si6O15)2(Si2O7)Si4O9(OH)·3(H2O)  
Tokkoite: K2Ca4[Si7O18(OH)](F,OH)

Comments: Yellow crystalline tokkoite intermixed with purple charoite (viewed cross-sectional to fiber direction).
Location: Murun, Aldan, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Charoite: K5Ca8(Si6O15)2(Si2O7)Si4O9(OH)·3(H2O)  
Tinaksite: K2Na(Ca,Mn++)2(Ti,Fe)O[Si7O18(OH)]

Comments: Polished slab of deep purple chariote with inclusions of black augite, white feldspar and orange tinaksite.
Location: Murun, Siberia, Russia. Scale: Picture size 10 cm.
© Kevin Ward

Chayesite: K(Mg,Fe++)4Fe+++(Si12O30)

Comments: Crystalline aggregate of rusty red, thin tabular hexagonal plates of chayesite stacked along the c-axis on matrix.
Location: Pauliberg Mt., Kobersdorf, Oberpullendorf, Burgenland, Austria. Scale: Crystal size 0.5 mm.
© Tom Loomis / Dakota Matrix

Chayesite: K(Mg,Fe++)4Fe+++(Si12O30)  
Merrihueite: (K,Na)2(Fe++,Mg)5Si12O30

Comments: A sharp, chemically zoned crystal of copper-brown merrihueite(?) (see Lapis-Magazine 4/2002 Page 38/39) overgrown on bluish chayesite.
Location: Basalt quarry, Pauliberg Mt., Kobersdorf, Oberpullendorf, Burgenland, Austria. Scale: Crystal Size 0.15 cm.
© Jeff Weissman / Photographic Guide to Mineral Species

Chekhovichite: (Bi,Pb,Fe)2Te4O11

Comments: Crude, white transparent subhedral chekhovichite crystal.
Location: Zod Deposit, 14 km East of Verdenis, Armenia. Scale: Specimen Size 2x7 mm.
© Diederik Visser

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

Chenevixite: Cu2Fe+++2(AsO4)2(OH)4·(H2O)

Comments: Green micro crystals of chenevixite on matrix.
Location: Majuba Hill, Pershing County, Nevada, USA. Scale: Size Not Given.
© John Veevaert

Chenguodaite: Ag9FeTe2S4

Comments: BSE Image of coexisting chenguodaite (U1) and galena (Gn), part of the grain is extracted for Gandolfi camera diffraction. (Chinese Science Bulletin 2008, 53(22)).
Location: Bunan deposit, Shandong Province, People’s Republic of China. Scale: See Image.
© Chinese Science Bulletin

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

Cheralite-(Ce): (Ce,Ca,Th)(P,Si)O4

Comments: Brown to tan, massive cheralite-(Ce) showing cleavage traces.
Location: Uranium King Mine, Trent Creek, Encampment Copper District, Sierra Madre Mts., Carbon Co., Wyoming, USA. Scale: Picture size 1.4 cm.
© Paul M. Schumacher

Cherepanovite: RhAs  
Cooperite: (Pt,Pd,Ni)S  
Platinum: Pt

Comments: Creamy-grayish fractured grains of cherepanovite with gray granular cooperite and white massive grains of iridian ruthenian platinum. Polished section in reflected light.
Location: Placer Deposit, Northern Pekul'nei River, Pekul'nei Range, Chukotka (Tchukotka) Okrug, Chukot Peninsula, Far-Eastern Region, Russia. Scale: Picture size 0.12 mm.
© Thomas Witzke / Abraxas-Verlag

Chernikovite: (H3O)2(UO2)2(PO4)2·6(H2O)

Comments: Greenish-yellow crystals of chernikovite intimately intergrown with meta-autunite.
Location: Rockelmann Quarry, Schwarzenberg, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture Size 3.5 mm.
© Thomas Witzke / Abraxas-Verlag

Chernovite-(Y): YAsO4

Comments: Dark brown irregular masses and veinlets of chernovite-(Y) in pale creamy tan-colored matrix.
Location: Montaldo Mine, Piedmont, Italy. Scale: 2 1/4" x 2".
© Chris Wright / Wrights Rock Shop

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

Chervetite: Pb2V2O7  
Francevillite: (Ba,Pb)(UO2)2V2O8·5(H2O)

Comments: Bottle brown tabular crystals of chervetite on yellow francevilleite.
Location: Mounana, Haut-Ogoue, Gabon. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Chesterite: (Mg,Fe++)17Si20O54(OH)6  
Magnetite: Fe++Fe+++2O4

Comments: Green platy chesterite in black, metallic magnetite.
Location: Near Missoula, Missoula County, Montana, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Chestermanite: Mg2(Fe+++,Mg,Al,Sb+++++)BO3O2  
Ludwigite: Mg2Fe+++BO5

Comments: Black capillary crystals of ludwigite with green inclusions of chestermanite in impure marble.
Location: Near Potter Pass, Fresno County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Chevkinite-(Ce): (Ce,La,Ca,Th)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22

Comments: Dark brown crystal of chevkinite-(Ce).
Location: Miass, Central Ural Mountains, Russia. Scale: 3 cm.
© Dave Barthelmy

Chiavennite: CaMnBe2Si5O13(OH)2·2(H2O)

Comments: Prismatic micro crystals of chiavennite less than 1mm.
Location: Ute, Sweden. Scale: Picture size 1 cm.
© Tom Loomis / Dakota Matrix

Childrenite: Fe++Al(PO4)(OH)2·(H2O)

Comments: Single, terminated crystal of childrenite.
Location: Linopolis, Minas Gerais, Brazil. Scale: 2.6 cm.
© John Veevaert