Jeff Weissman's Image Gallery

McDougall Minerals sells high-quality mineral specimens from all over the world to collectors of all levels, from beginners to connoisseurs

John Betts - Fine Minerals, New York. Dealers of Fine Minerals and Natural Crystal Clusters since 1989. We buy rock collections, we buy gem collections, we buy mineral collections.

Dakota Matrix was founded in 1996 and has offered systematic and rare mineral specimens online since 1998.

Images from Jeff Weissman

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Jeff Weissman's Image Gallery With 1177 Images

Clinochalcomenite Image

Images:

Clinochalcomenite: CuSeO3·2(H2O)
Kerstenite: PbSeO4 (?)
Krutaite: CuSe2

Comments: Tan opaque fibrous kerstenite with possible blue clinochalcomenite on dark krutaite.
Location: Mina El Dragon, Potosi, Bolivia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinoenstatite Image

Images:

Clinoenstatite: Mg2Si2O6

Comments: Crystalline massive clinoenstatite.
Location: Cape Vogel, Papua New Guinea. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinoferrosilite Image

Images:

Clinoferrosilite: (Fe++,Mg)2Si2O6

Comments: Light green crystalline clinoferrosilite with dark green diopside.
Location: Bushveld Complex, Merensky Reef, Rustenberg, Northern Province, South Africa. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinoholmquistite Image

Images:

Clinoholmquistite: [ ](Li2Mg3Al2)Si8O22(OH)2
Magnesioclinoholmquistite: Li2(Mg,Fe++)3Al2Si8O22(OH)2
Fluoro-sodic-pedrizite: NaLi2(Mg2Al2Li)?5Si8O22F2

Comments: Dark blue fibrous clinoholmquistite with radiating structure, variety magnesioclinoholmquistite. Clinoholmsquitite may be a new aphibole, fluoro-sodic-pedrizite..
Location: Near Murun, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinohumite Image

Images:

Clinohumite: (Mg,Fe++)9(SiO4)4(F,OH)2

Comments: Orange-brown glassy crystalline clinohumite.
Location: Kuhi-Lal, Pamir, Gorno-Badahsan, Tadzhikistan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinojimthompsonite Image

Images:

Clinojimthompsonite: (Mg,Fe++)5Si6O16(OH)2
Jimthompsonite: (Mg,Fe++)5Si6O16(OH)2

Comments: Pale green to white glassy crystalline fibrous clinojimthompsonite intergrown with jimthompsonite.
Location: Chester, Windsor County, Vermont, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinosafflorite Image

Images:

Clinosafflorite: (Co,Fe,Ni)As2

Comments: Silvery metallic granular clinosafflorite in rock.
Location: Nordmark, Varmland, Sweden. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Clinotobermorite Image

Images:

Clinotobermorite: Ca5Si6(O,OH)18·5(H2O)

Comments: Opaque white pure massive clinotobermorite.
Location: Bazhenovskoe, Asbest, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Coalingite Image

Images:

Coalingite: Mg10Fe+++2(CO3)(OH)24·2(H2O)

Comments: Brown micaceous sub-metallic coatings of coalingite on serpentinite rock.
Location: Near Gem Mine, San Benito County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Coconinoite Image

Images:

Coconinoite: Fe+++2Al2(UO2)2(PO4)4(SO4)(OH)2·18(H2O)

Comments: Pale yellow coatings of coconinoite on sandstone.
Location: Jomac Mine, White Canyon, San Juan County, Utah. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Coesite Image

Images:

Coesite: SiO2

Comments: Fine-grained, massive coesite.
Location: Meteor Crater, Canyon Diablo, Coconino County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Cohenite Image

Images:

Cohenite: (Fe,Ni,Co)3C
Troilite: FeS
Kamacite: alpha-(Fe,Ni)
Taenite: gamma-(Fe,Ni)

Comments: Brown masses of troilite, with white cohenite, in kamacite/taenite matrix, in meteorite (polished section).
Location: Meteor Crater, Canyon Diablo, Coconino County, Arizona, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Columbite-(Fe) Image

Images:

Columbite-(Fe): Fe++Nb2O6
Baotite: Ba4(Ti,Nb)8Si4O28Cl

Comments: Minute brown crystalline grains of baotite in dark ferrocolumbite (columbite-(Fe)).
Location: Sheep Creek, Ravalli County, Montana. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Columbite-(Fe) Image

Images:

Columbite-(Fe): Fe++Nb2O6
Plumbopyrochlore: (Pb,Y,U,Ca)2-xNb2O6(OH)

Comments: Brown plumbopyrochlore crystal with dark brown ferrocolumbite (columbite-(Fe)).
Location: Holdazan, Buregteg, Mongolia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Columbite-(Fe) Image

Images:

Columbite-(Fe): Fe++Nb2O6
Upalite: Al(UO2)3(PO4)2O(OH)·7(H2O)

Comments: Thin translucent yellowish upalite crusts on a prismatic, black columbite crystal.
Location: Thin translucent yellowish crusts on undifferntiated columbite crystal. Scale: Picture Size 2 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Combeite Image

Images:

Combeite: Na2Ca2Si3O9

Comments: Crystalline cleavage fragment of combeite.
Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Congolite Image

Images:

Congolite: (Fe++,Mg,Mn)3B7O13Cl

Comments: Pearly crystalline grains of congolite.
Location: Brazzaville, Pool, Congo. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Conichalcite Image

Images:

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

Copiapite Image

Images:

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

Coquimbite Image

Images:

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

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