Mineral Specimen Images (C)

Corvusite: (Na,Ca,K)V8O20·4(H2O)  
Vanoxite: V++++4V+++++2O13·8(H2O) (?)

Comments: Blue-black, somewhat silky vanoxite, with brown corvusite on sandstone.
Location: Club Mine, Uravan, Montrose County, Colorado, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cosalite: Pb2Bi2S5

Comments: Metallic-lustered cosalite on matrix.
Location: Limestone Quarry, Hammerunterwiesenthal, Oberwiesenthal, Erzgebirge, Saxony, Germany. Scale: Picture size 8 mm.
© Thomas Witzke / Abraxas-Verlag

Coskrenite-(Ce): (Ce,Nd,La)2(SO4)2(C2O4)·8(H2O)

Comments: SEM image of coskrenite-(Ce) crystals in cavities in epsomite. (CanMin, v37:1453).
Location: AIum Cave Bluff, Great Smoky Mountains, Tennessee. Scale: See Image.
© Canadian Mineralogist

Costibite: CoSbS

Comments: B&W polished section image of ullmannite-willyamite zoned crystal (Ul-Wi) surrounded by lollingite (Lol) containing lamellae of costibite (Co) in a siderite (Sid) matrix. AmMin v55:10.
Location: Consols Mine, Broken Hill, New South Wales, Australia. Scale: See Image.
© American Mineralogist

Cotunnite: PbCl2

Comments: White to tan translucent crystalline cotunnite on volcanic slag.
Location: Vesuvius, Campania, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cotunnite: PbCl2  
Burnsite: KCdCu7O2(SeO3)2Cl9

Comments: Images of burnsite grains (dark) in intimate intergrowth with cotunnite (light). Images obtained by scanning electron microscopy.
Location: North Breach of the great fissure Tolbachik volcano eruption (1975-1976), Kamchatka Peninsula, Russia. Scale: Scale bar: 20 µ-m.
© Canadian Mineralogist

Coulsonite: Fe++V+++2O4

Comments: Evenly disseminated fine-grained coulsonite in subhedral crystals (light gray) scattered through silicate gangue (dark gray), composed of chlorite, muscovite and scapolite. (AmMin, v47:1284).
Location: Metamorphosed igneous rocks of the Buena Vista Hills located some twenty miles southeast of the town of Lovelock, Nevada, USA. Scale: Picture Size 135 x.
© American Mineralogist

Cousinite: MgU2Mo2O13·6(H2O) (?)

Comments: minute aggregate of greenish black platy crystals of Cousinite.
Location: Shinkolobwe, Katanga, Shaba, Zaire. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Coutinhoite: ThxBa1-2x(H2O)y(UO2)2Si5O13·H2O

Comments: New mineral, IMA 2003-025, from this pegmatite. This is a co-type specimen. Flaky crystals of choutinhoite to less than 0.25mm in gelatin capsule.
Location: Lavra do Urucum, Serra do Urucum, Galileia, Minas Gerais, Brazil. Scale: Crystal size 0.25mm.
© Tom Loomis / Dakota Matrix

Coutinhoite: ThxBa1-2x(H2O)y(UO2)2Si5O13·H2O

Comments: Irregular aggregate of yellow coutinhoite. (AmMin, v 89, p 721).
Location: Urucum mine, Galiléia, Minas Gerais, Brazil. Scale: See Image.
© American Mineralogist

Covellite: CuS

Comments: Covellite crystal group.
Location: Butte, Montana, USA. Scale: 8 x 4 cm.
© Fabre Minerals

Covellite: CuS  
Nukundamite: (Cu,Fe)4S4

Comments: Metallic brownish rim of nukundamite with dark purplish-blue covellite on fine-grained pyrite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Cowlesite: CaAl2Si3O10·5-6(H2O)

Comments: Milky bluish translucent botryoidal cowlesite in vug.
Location: Goble, Columbia County, Oregon, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Coyoteite: NaFe3S5·2(H2O)

Comments: Black and white image of a polished section showing coyoteite crystals showing chevron pattern developed by opposing cleavage sets. Continuous parallel lines are polishing scratches. (AmMin 68:252).
Location: Coyote Peak mafic alkalic diatreme near Orick, Humboldt County, California. USA. Scale: Image size 0.26 mm.
© American Mineralogist

Crandallite: CaAl3(PO4)2(OH)5·(H2O)  
Wardite: NaAl3(PO4)2(OH)4·2(H2O)

Comments: Sliced and polished slab of yellow to white mixture of wardite and crandallite.
Location: Clay Canyon, Fairfield, Utah Co., Utah, USA. Scale: 11x6x.6 cm.
© John Betts - Fine Minerals

Crandallite: CaAl3(PO4)2(OH)5·(H2O)  
Phosphofibrite: KCuFe+++15(PO4)12(OH)12·12(H2O)

Comments: Olive-green colored fibrous phosphofibrite aggregates with white crandallite.
Location: Silver Coin Mine, Humboldt County, Nevada, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Creaseyite: Pb2Cu2(Fe+++,Al)2Si5O17·6(H2O)

Comments: Sparse light green micro crystalline creaseyite on crystalline quartz.
Location: Navajoa, Sonora, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Creaseyite: Pb2Cu2(Fe+++,Al)2Si5O17·6(H2O)

Comments: Green acicular sprays of creaseyite to 0.5mm on matrix.
Location: Rawhide mine, Mohave County, Arizona, USA. Scale: Picture size 5 mm.
© Tom Loomis / Dakota Matrix

Crednerite: CuMnO2  
Mendipite: Pb3Cl2O2

Comments: Sooty, deep-black, granular to platy crednerite with mendipite.
Location: Mendip Hills, Somerset, England. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Crednerite: CuMnO2  
Chloroxiphite: Pb3CuCl2(OH)2O2  
Mendipite: Pb3Cl2O2

Comments: Green, opaque granular chloroxiphite with mendipite and black crednerite.
Location: Higher Pitts Farm, Priddy, Mendip Hills, Somerset, England. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species