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Clinochlore: (Mg,Fe++)5Al(Si3Al)O10(OH)8 Andradite: Ca3Fe+++2(SiO4)3
Comments: Transparent topazolite, the yellow variety of andradite on clinochlore. Location: Yellow Cat Mine, New Idria District, San Benito County. California, USA. Scale: 2.7 x 2.5 cm. © Fabre Minerals
Clinochlore: (Mg,Fe++)5Al(Si3Al)O10(OH)8 Perovskite: CaTiO3
Comments: Square, opaque perovskite on green clinochlore. Very brilliant and with large crystals (2 x 1.5 cm.). Location: Ilmen Mountains. Chelyabinsk, Urals, Russia. Scale: 6 x 4.5 cm. © Fabre Minerals
Clinozoisite: Ca2Al3(SiO4)3(OH) = Ca2AlAl2(SiO4)(Si2O7)O(OH)
Comments: Brown, prismatic crystal of clinozoisite. Location: Alchuri, Shigar Skardu district, Pakistan. Scale: Crystal size 7x2.3x1.2 cm. © Fabre Minerals
Colemanite: Ca2B6O11·5(H2O)
Comments: Large crystals of brown colemanite with second generation of absolutely clear and gemmy (colorless) colemanite. Intensely fluorescent in long and short UV.. Location: Mustafakemalpascha Mine, West-Anatolia Turkey. Scale: Crystal size: 1.3 x 1 cm. © Fabre Minerals
Columbite-(Fe): Fe++Nb2O6 Microcline: KAlSi3O8
Comments: Blocky, dark brown ferrocolumbite on pale greenish blue amazonite (microcline). Location: Crystal Park, El Paso Co., Colorado, USA. Scale: 2.5 x 1.5 cm. © Fabre Minerals
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
Corundum: Al2O3
Comments: corundum (variety Sapphire). Location: Miass, Urals, Russia. Scale: 10 x 8 cm. © Fabre Minerals
Covellite: CuS
Comments: Covellite crystal group. Location: Butte, Montana, USA. Scale: 8 x 4 cm. © Fabre Minerals
Creedite: Ca3Al2(SO4)(F,OH)10·2(H2O) Fluorite: CaF2
Comments: Well-developed, prismatic, reddish creedite crystals on green fluorite. Location: Mina Navidad, Rodeo, Durango, Mexico. Scale: 9 x 5 x 5.3 cm. © Fabre Minerals
Cuprite: Cu2O Chrysocolla: (Cu,Al)2H2Si2O5(OH)4·n(H2O)
Comments: Semi-metallic, dark reddish gray, cuprite crystals on blue chrysocolla. Location: Mashamba West mine, Shaba, Congo. Scale: 7.5 x 4.7 x 2.3 cm. © Fabre Minerals
Datolite: CaBSiO4(OH)
Comments: Cluster of doubly-terminated datolite crystals to 3.3 cm across with a scattering of brown inclusions. Location: Boron Pit, Dal'Negorsk, Russia. Scale: 5x3.9x3.7 cm. © Fabre Minerals
Descloizite: PbZn(VO4)(OH)
Comments: Dark reddish brown, crystalline aggregate of descloizite. Location: Grootfontein. Namibia. Scale: 3 cm. © Fabre Minerals
Devilline: CaCu4(SO4)2(OH)6·3(H2O)
Comments: Laminar crystals of blue devilline on matrix.. Location: Spania Dolina (ex-Herrengrund) Banská Bystrica Slovak Republic. Scale: Specimen size: 6.9 x 3.3 x 5.7 cm. © Fabre Minerals
Diopside: CaMgSi2O6 Magnesioferrite: MgFe+++2O4
Comments: Very dark brown Magnesioferrite Pleonaste (Iron-Magnesium spinel) with cream colored Calcite and gray green diopside. Location: Aldan, Gon River, Russia. Scale: 6 x 4.5 cm. © Fabre Minerals
Dissakisite-(Ce): Ca(Ce,REE)(Mg,Fe++)(Al,Fe+++)2Si3O12(OH) Dolomite: CaMg(CO3)2
Comments: Small, prisimatic, acicular crystals of tan-colored dissakisite-(Ce) scatterd on white crystalline dolomite. Location: Trimouns mine, Luzenac, Ariège France. Scale: Picture size 5 cm. © Fabre Minerals
Djurleite: Cu31S16
Comments: Dark, metallic djurleite with transparent quartz and white calcite. Location: Dzhezkazgan. Kazakhstan. Scale: 4.5 x 4.5 cm. © Fabre Minerals
Dolomite: CaMg(CO3)2 Dissakisite-(Ce): Ca(Ce,REE)(Mg,Fe++)(Al,Fe+++)2Si3O12(OH)
Doyleite: Al(OH)3 Gibbsite: Al(OH)3
Comments: Botryoidal spheres of doyleite growing along with its dimorph gibbsite. Analysis shows that doyleite dominates the mix. There are also minor canary yellow phlogopite crystals. Location: Baoshan, Yunnan, China. Scale: 8 x 6.5 x 1.9 cm. © Fabre Minerals
Dravite: NaMg3Al6(BO3)3Si6O18(OH)4
Comments: Doubly terminated dravite crystal on white mica shist matrix. Location: Yinnietharra Station, Gascoyne, Western Australia. Scale: 4 x 4 x 2.9 cm. © Fabre Minerals
Duftite-beta: PbCu(AsO4)(OH)
Comments: Intensely green Duftite-beta on fluorescent calcite. Location: Tsumeb mine, Tsumeb, Namibia. Scale: . © Fabre Minerals