's Image Gallery

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

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

Conichalcite: CaCu(AsO4)(OH)  
Barahonaite-(Fe): (Ca,Cu,Na,Fe+++,Al )12Fe+++2(AsO4)8(OH,Cl)x·nH2O

Comments: Micro yellow, platy barahonaite-(Fe) crystals associated with green "beads" of conichalcite, yellowish, earthy arseniosiderite and micro olivenite crystals.
Location: Dolores prospect near the village of Pastrana, in the Province of Murcia of southeastern Spain. Scale: Specimen Size 6 x 4 x 2 cm.
© Tom Loomis / Dakota Matrix

Connellite: Cu19Cl4(SO4)(OH)32·3(H2O)

Comments: Blue acicular crystals of connellite.
Location: Deep Creek Mountains, Tooele County, Utah, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Cookeite: LiAl4(Si3Al)O10(OH)8

Comments: Large tan-colored cookeite epimorph after a large 12 cm quartz crystal. The outer faces of the epimorph are overgrown with milky quartz crystals up to 15 mm long.
Location: Bennett & Orchard Pit mines, Buckfield, Oxford Co., Maine, USA. Scale: 17x17x11 cm.
© John Betts - Fine Minerals

Coombsite: K(Mn++,Fe++,Mg)13(Si,Al)18O42(OH)14

Comments: Sawed slab with brownish veining in pink (?) matrix.
Location: Watson's Beach, Otago, South Island,, New Zealand. Scale: 3x2cm x 5mm.
© Tom Loomis / Dakota Matrix

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

Cooperite: (Pt,Pd,Ni)S  
Osmium: (Os,Ir)  
Vasilite: (Pd,Cu)16(S,Te)7  
Vysotskite: (Pd,Ni)S

Comments: BSE image taken with a SEM of the sulfide-dominant microparagenesis filling a gas vacuole. Cooperite crystal surrounded by Pd-Cu-Pt-S phase (vasilite?), vysotskite and osmium laths (white) in chalcopyrite-bornite matrix (dark). (CanMin 38:1258).
Location: Pustaya River placer deposit, situated within the Koryak-Kamchatka platinum-bearing belt of Alaskan-type intrusions in eastern Russia. Scale: See Image.
© Canadian Mineralogist

Copiapite: Fe++Fe+++4(SO4)6(OH)2·20(H2O)

Comments: Brownish yellow tabular crystals of copiapite.
Location: Saghand, near Yazd, Yadz Province, Iran. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Copiapite: Fe++Fe+++4(SO4)6(OH)2·20(H2O)  
Rozenite: Fe++SO4·4(H2O)  
Ferrinatrite: Na3Fe+++(SO4)3·3(H2O)

Comments: White powdery rozenite coating with yellow ferrinatrite on purple copiapite.
Location: Le Cetine Mine, Siena, Tuscany, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Copper: Cu

Comments: Native copper forming a branching cluster of crystals with some massive calcite.
Location: Houghton County, Michigan, USA. Scale: Crystal size 1.5 cm.
© Dan Weinrich

Coquandite: Sb6O8(SO4)·(H2O)

Comments: Silky coquandite with stibnite.
Location: Pereta mine, Grosseto, Tuscany, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Coquimbite: Fe+++2(SO4)3·9(H2O)

Comments: Brownish yellow tabular crystals of coquimbite.
Location: Lavender Pit, Bisbee, Cochise County, Arizona, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Coquimbite: Fe+++2(SO4)3·9(H2O)  
Goldichite: KFe+++(SO4)2·4(H2O)  
Ferricopiapite: Fe+++2/3Fe+++4(SO4)6(OH)2·20(H2O)

Comments: Prismatic to fibrous crystals of goldichite on white massive coquimbite with yellow ferricopiapite.
Location: Dexter No. 7 Mine, Calf Mesa, San Rafael Swell, Emery County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Coquimbite: Fe+++2(SO4)3·9(H2O)

Comments: Coquimbite rosettes (small bumps) secondarily nucleated on a cryptocrystalline mass. AmMin, v90, p1734.
Location: Vents associated with underground coal fires in the Wuda coal bed of Inner Mongolia. Scale: See Image.
© American Mineralogist

Corderoite: Hg3S2Cl2

Comments: Small dark brown dodecahedral crystal of corderoite.
Location: Hohe Buche, Königsberg, Wolfstein, Palatinate, Rhineland-Palatinate, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Corderoite: Hg3S2Cl2  
Radtkeite: Hg3S2ClI

Comments: SEM image of prismatic radtkeite crystals and equant corderoite crystals on quartz matrix. AmMin, v76:1715).
Location: McDermitt mercury mine, Humboldt County, Nevada, USA. Scale: Scale Bar 10 µm.
© American Mineralogist

Cordierite: Mg2Al4Si5O18

Comments: Brown rectangular cordierite crystals in matrix. These crystals are not gemmy enough to be called iolite.
Location: Richmond Soapstone Quarry, Richmond, Cheshire Co., New Hampshire, USA. Scale: 24x20x15 mm.
© John Betts - Fine Minerals

Cordierite: Mg2Al4Si5O18

Comments: Piece of near-gem-quality glassy gray-blue cordierite with some yellowish internal reflections.
Location: Mt. Bity District, Madagascar. Scale: Overall: 2 x 1 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Cordylite-(Ce): Ba(Ce,La)2(CO3)3F2  
Synchysite-(Ce): CaCe(CO3)2F

Comments: Yellow crystals of cordylite-(Ce) on light brownish synchysite-(Ce).
Location: Narssârssuk (Narsarsuk), Igaliko, Greenland. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Corkite: PbFe+++3(PO4)(SO4)(OH)6  
Hinsdalite: (Pb,Sr)Al3(PO4)(SO4)(OH)6

Comments: Small brown rounded translucent crystals of corkite on darker brown botryoidal hinsdalite.
Location: Grube Schone Aussicht, near Dernbach, Montabaur, Rheinland-Pflaz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species