Canadian Mineralogist's Image Gallery

Brodtkorbite: Cu2HgSe2

Comments: Polished section with partially crossed polarizers showing brodtkorbite (br) in association with tiemannite (ti) and berzelianite (bz). (CanMin, v40:225).
Location: Telethermal selenide vein-type assemblage at the Tuminico Ia selenium deposit, Sierra de Cacho (Sierra de Umango) district, La Rioja, Argentina. Scale: Picture Size 0.5 x 0.35 mm.
© Canadian Mineralogist

Brodtkorbite: Cu2HgSe2

Comments: Polished section with partially crossed polarizers showing brodtkorbite (br) in association with tiemannite (ti) and berzelianite (bz). (CanMin, v40:225).
Location: Telethermal selenide vein-type assemblage at the Tuminico Ia selenium deposit, Sierra de Cacho (Sierra de Umango) district, La Rioja, Argentina. Scale: Picture Size 0.5 x 0.35 mm.
© Canadian Mineralogist

Burgessite: Co2(H2O)4[(AsO3OH)]2·(H2O)

Comments: SEM photographs of a rosette of burgessite. (CanMin, v47:159).
Location: Keeley mine, South Lorrain Township, Timiskaming District, Ontario, Canada.. Scale: Picture size50 µm.
© Canadian Mineralogist

Burgessite: Co2(H2O)4[(AsO3OH)]2·(H2O)

Comments: SEM photographs of a rosette of burgessite. (CanMin, v47:159).
Location: Keeley mine, South Lorrain Township, Timiskaming District, Ontario, Canada.. Scale: Picture size50 µm.
© Canadian Mineralogist

Burgessite: Co2(H2O)4[(AsO3OH)]2·(H2O)

Comments: Rosettes of burgessite showing the individual lath-like crystals and their adamantine luster. (CanMin, v47:159).
Location: Keeley mine, South Lorrain Township, Timiskaming District, Ontario, Canada.. Scale: Picture size 1.1 mm.
© Canadian Mineralogist

Burgessite: Co2(H2O)4[(AsO3OH)]2·(H2O)

Comments: Rosettes of burgessite showing the individual lath-like crystals and their adamantine luster. (CanMin, v47:159).
Location: Keeley mine, South Lorrain Township, Timiskaming District, Ontario, Canada.. Scale: Picture size 1.1 mm.
© Canadian Mineralogist

Burnsite: KCdCu7O2(SeO3)2Cl9  
Cotunnite: PbCl2

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

Burnsite: KCdCu7O2(SeO3)2Cl9  
Cotunnite: PbCl2

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

Bussyite-(Ce): (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4

Comments: SEM image of a spray of bussyite-(Ce) with hexagonal plates of catapleiite. Inset image shows detail of crystal terminations. (CanMin, v47:193).
Location: Poudrette quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Scale: Picture size 1.5mm.
© Canadian Mineralogist

Bussyite-(Ce): (Ce,REE)3(Na,H2O)6MnSi9Be5(O,OH)30F4

Comments: SEM image of a spray of bussyite-(Ce) with hexagonal plates of catapleiite. Inset image shows detail of crystal terminations. (CanMin, v47:193).
Location: Poudrette quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Scale: Picture size 1.5mm.
© Canadian Mineralogist

Cabriite: Pd2SnCu  
Sperrylite: PtAs2

Comments: Polished section (PPL) image of a ovoid grain of cabriite (Ca) rimmed by native silver (Ag) in a matrix of brownish cubanite (Cu), with tawny chalcopyrite (Cp). Surrounded on three sides by coarse, millimetric crystals of sperrylite (Sp).
Location: Noril’sk-Talnakh mining district of northwestern Russia. (CanMin, v40:473). Scale: Feld of view 1.2 mm.
© Canadian Mineralogist

Cabriite: Pd2SnCu  
Sperrylite: PtAs2

Comments: Polished section (PPL) image of a ovoid grain of cabriite (Ca) rimmed by native silver (Ag) in a matrix of brownish cubanite (Cu), with tawny chalcopyrite (Cp). Surrounded on three sides by coarse, millimetric crystals of sperrylite (Sp).
Location: Noril’sk-Talnakh mining district of northwestern Russia. (CanMin, v40:473). Scale: Feld of view 1.2 mm.
© Canadian Mineralogist

Calvertite: Cu5Ge0.5S4

Comments: SEM images of massive-granular calvertite. The texture is made apparent by the presence of a thin rind of chalcocite (white) on the calvertite grains. (CanMin, v45:1519).
Location: Partly oxidized specimen from the Tsumeb mine, Tsumeb, Namibia. Scale: See Image.
© Canadian Mineralogist

Calvertite: Cu5Ge0.5S4

Comments: SEM images of massive-granular calvertite. The texture is made apparent by the presence of a thin rind of chalcocite (white) on the calvertite grains. (CanMin, v45:1519).
Location: Partly oxidized specimen from the Tsumeb mine, Tsumeb, Namibia. Scale: See Image.
© Canadian Mineralogist

Caryochroite: (Na,Sr)3(Fe+++,Mg)10[Ti2Si12O37](O,OH)9·8H2O

Comments: Hazel brown aggregate of caryochroite tubes. (CanMin, v44:1331).
Location: Umbozero mine, Alluaiv, Lovozero, Kola Peninsula, Russia. Scale: Specimen size 5 x 6 cm.
© Canadian Mineralogist

Caryochroite: (Na,Sr)3(Fe+++,Mg)10[Ti2Si12O37](O,OH)9·8H2O

Comments: Hazel brown aggregate of caryochroite tubes. (CanMin, v44:1331).
Location: Umbozero mine, Alluaiv, Lovozero, Kola Peninsula, Russia. Scale: Specimen size 5 x 6 cm.
© Canadian Mineralogist

Catamarcaite: Cu6GeWS8

Comments: Fractured aggregate of catamarcaite (Ct) composed of twinned grains with red internal reflections; Dg is digenite, Sp sphalerite. Oil immersion, crossed polars. (CanMin, v44:1481).
Location: Bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina. Scale: See Image.
© Canadian Mineralogist

Catamarcaite: Cu6GeWS8

Comments: Fractured aggregate of catamarcaite (Ct) composed of twinned grains with red internal reflections; Dg is digenite, Sp sphalerite. Oil immersion, crossed polars. (CanMin, v44:1481).
Location: Bornite-rich ore from old dumps near the La Rosario vein, Capillitas epithermal deposit, Catamarca Province, Argentina. Scale: See Image.
© Canadian Mineralogist

Cerite-(La): (La,Ce,Ca)9(Mg,Fe+++)(SiO4)6[SiO3(OH)](OH)3

Comments: SEM photomicrograph of a rhombohedral crystal of cerite-(La).
Location: Mt. Yuksporr, Khibina massif, Kola Peninsula, Russia. Scale: Crystal size 2 mm.
© Canadian Mineralogist

Cerite-(La): (La,Ce,Ca)9(Mg,Fe+++)(SiO4)6[SiO3(OH)](OH)3

Comments: SEM photomicrograph of a rhombohedral crystal of cerite-(La).
Location: Mt. Yuksporr, Khibina massif, Kola Peninsula, Russia. Scale: Crystal size 2 mm.
© Canadian Mineralogist