's Image Gallery

Cornetite: Cu3(PO4)(OH)3

Comments: Crystals of cornetite on matrix.
Location: Etoile Mine, Katanga Province, Dem. Rep. of Congo. Scale: Crystal size 0.5 cm.
© John Veevaert

Cornetite: Cu3(PO4)(OH)3

Comments: Radial groups of intense blue cornetite crystals in green malachite.
Location: Mine de l'Etoile, Shaba, Lubumbashi Zaire. Scale: Picture size 5 cm.
© Fabre Minerals

Cornubite: Cu5(AsO4)2(OH)4  
Conichalcite: CaCu(AsO4)(OH)

Comments: Blue green crystalline cornubite alteration of enargite with green conichalcite in white calcite.
Location: Lime Bluff Quarry, Lycoming County, Pennsylvania, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cornwallite: Cu5(AsO4)2(OH)4

Comments: Emerald green botryoidal crystals of cornwallite.
Location: Tintic District, Juab County, Utah, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Coronadite: Pb(Mn++++,Mn++)8O16  
Crocoite: PbCrO4

Comments: Black coronadite with red crocoite on matrix.
Location: Callenberg North (no. 1) open cut, Callenberg, Glauchau, Saxony, Germany. Scale: Specimen size 7 cm.
© Thomas Witzke / Abraxas-Verlag

Coronadite: Pb(Mn++++,Mn++)8O16  
Iodargyrite: AgI

Comments: Dark, fine-grained massive coronadite with yellowish octahedral iodargyrite crystals.
Location: Broken Hill, New South Wales, Australia. Scale: Picture size 3x2 cm.
© Dave Barthelmy

Corrensite: (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10·n(H2O)

Comments: Platy, authigenic chloritic mixed-layer clays (Corrensite?), lining the pore spaces of a sandstone. SEM image from a core sample.
Location: Unknown. Scale: Picture size 33 µ-m.
© OMNI Laboratories, Inc

Corrensite: (Ca,Na,K)(Mg,Fe,Al)9(Si,Al)8O20(OH)10·n(H2O)

Comments: White earthy crust of corrensite on matrix.
Location: Bolet, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Corundum: Al2O3

Comments: corundum (variety Sapphire).
Location: Miass, Urals, Russia. Scale: 10 x 8 cm.
© Fabre Minerals

Corundum: Al2O3  
Zincohogbomite-2N2S: (Zn,Fe++)(2-2x)(Ti)xAl4O8

Comments: Thin-Section (Plane Polarized Light) of a brown, twinned zincohögbomite-2N2S crystal with blue corundum.
Location: Mikro-Lakka Emery deposit, Kerketeas Mt, Sámos Island, Aegean Islands Department, Greece. Scale: Picture size 1.1 mm.
© Thomas Witzke / Abraxas-Verlag

Corundum: Al2O3

Comments: Bright red ruby corundum crystals in white marble matrix.
Location: Jagdalak (Jagdalek; Jagdalik) Ruby Mine, Sorobi District, Konar (Kunar; Konarh; Konarha; Nuristan) Province, Afghanistan. Scale: 4x3.5x3 cm.
© John Betts - Fine Minerals

Corvusite: (Na,Ca,K)V8O20·4(H2O)

Comments: Silky to dull brown corvusite in/on sandstone.
Location: Fire Fly Mine, near Delta, Emery County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

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