Canadian Mineralogist's Image Gallery

Cuprorhodsite: CuRh2S4

Comments: Grain UK296A-1, erlichmanite (1), Ru-rich erlichmanite (2), cuproiridsite (3), and cuprorhodsite (4). (CanMin, v40:1127).
Location: Uktus chromitites complexes in the northern and central Urals, Russia. Scale: See Image.
© Canadian Mineralogist

Daomanite: CuPtAsS2

Comments: Magnification of the micro-aggregate (shown in inset), which consists of white sperrylite, unnamed Cu2(Ni,Co)Pt3S8 and a single daomanite (Dmn) grain, and displays the chain-like morphology. (CanMin, v42:455).
Location: Chromitite layer of the Mount Bol’shaya Varaka deposit, Imandra layered complex, Kola Peninsula, Russia. Scale: See Image.
© Canadian Mineralogist

Deanesmithite: Hg+2Hg++3Cr++++++O5S2

Comments: SEM image showing several crystals of deanesmithite protruding from matrix. (CanMin v31:787).
Location: Small prospect pit near the long-abandoned Clear Creek mercury mine, New Idria district, San Benito County, Califomia, USA. Scale: Scale Bar 40 µm.
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Demartinite: K2[SiF6]

Comments: SEM image of a tapering, hexagonal demartinite crystal. (CanMin, v45:1275).
Location: La Fossa crater, Vulcano, Eolian Islands, Italy.. Scale: See Image.
© Canadian Mineralogist

Donharrisite: Ni8Hg3S9

Comments: BSE photomicrograph of donharrisite showing remnants of subhedral polydymite crystals. (CanMin, v27:257).
Location: Found on a museum specimen from the former Erasmus miue, Schwardsp mining district, Leogang, Salzburg Province, Austria. Scale: Scale Bar 20 µm.
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Ercitite: Na2(H2O)4[Mn+++2(OH)2(PO4)2]

Comments: Back-scattered electron images of ercitite (medium gray) showing lath-shaped habit and cleavages and splintering on mechanical disturbance. W: whitlockite, F: fairfieldite, C: unidentified. (CanMin, v 38, p 896).
Location: Tanco pegmatite, southeastern Manitoba, Canada. Scale: Image size 150 µ-m.
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Eskebornite: CuFeSe2  
Jolliffeite: (Ni,Co)AsSe

Comments: Back-scattered electron image of jolliffeite in sulfurian eskebornite. Note the cracked appearance and the different brightness of eskebornite, which is a reflection of variable ratio of selenium to sulfur. (CanMin v 42, p 844).
Location: Niederschlema-Alberoda uranium deposit, in the Erzgebirge region of Germany. Scale: See Image.
© Canadian Mineralogist

Eucairite: CuAgSe  
Schlemaite: (Cu,[ ])6(Pb,Bi)Se4  
Clausthalite: PbSe

Comments: Reflected-light digital-image of the intermixed schlemaite grain in type sample F2, from which the reflectance, crystallographic and crystal-structure data were obtained. (CanMin, v 41, p 1435).
Location: "Tiber" dike, -855-m level, block 5128, main shaft # 371, Niederschlema-Alberoda vein-type uranium depost at Hartensein, Erzgebirge, Germany. Scale: See Picture.
© Canadian Mineralogist

Eyselite: Fe+++Ge++++3O7(OH)

Comments: Pale yellowish brown crystalline aggregate of eyselite in a vug on sulfide ore. (CanMin 42:1773).
Location: Ge-bearing ore samples from Tsumeb mine, Tsumeb, Namibia. Scale: See Scale Bar.
© Canadian Mineralogist

Eyselite: Fe+++Ge++++3O7(OH)

Comments: SEM photomicrograph of platy/tabular crystals of eyselite. (CanMin 42:1773).
Location: Ge-bearing ore samples from Tsumeb mine, Tsumeb, Namibia. Scale: See Scale Bar.
© Canadian Mineralogist

Ferronickelplatinum: Pt2FeNi

Comments: SEM image of ferronickelplatinum (Fnp), PGE alloys (Al), in a matrix of ferrian chromite (Fe-Chr). (CanMin, v45:631).
Location: Loma Peguera chromitites, Cordillera Central, Dominican Republic. Scale: Scale Bar 5 µn.
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Feruvite: (Ca,Na)(Fe,Mg,Ti)3(Al,Mg,Fe)6(BO3)3Si6O18(OH)4

Comments: BSE image of a typical zoned feruvite-dravite crystal in quartz. The lighter gray core is feruvite (F), and the darker rim and overgrowths consist of dravite (D). The white grains are chlorapatite..
Location: Tourmalinized rock at Cuvier Island, New Zealand. (CanMin, v27:199). Scale: Scale Bar 100 µm.
© Canadian Mineralogist

Fluorvesuvianite: Ca19(Al,Mg)13[SiO4]10[Si2O7]4(F,OH)10

Comments: Acicular crystals of fluorvesuvianite in a clear, calcite matrix. (CanMin, v 41, p 1375).
Location: Lupikko iron mine, Pitkaranta, Karelia, Russia. Scale: Picture size 1.2 cm.
© Canadian Mineralogist

Franklinite: (Zn,Mn++,Fe++)(Fe+++,Mn+++)2O4  
Rinmanite: (Zn,Mn)2Sb2Mg2Fe4O14(OH)2

Comments: B&W image (reflected light) of a polished section of rinmanite and franklinite (white) with associated silicates.
Location: Garpenberg Norra Zn-Pb mine, Hedemora, Dalarna, in south-central Sweden. (CanMin, v39:1675). Scale: Scale Bar 0.2 mm.
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Freudenbergite: Na2Fe+++2Ti6O16

Comments: BSE image of a sector-zoned crystal of freudenbergite. The bright pyramids correspond to sector (001), and the darker ones belong to sector (100).
Location: Peralkaline alkali syenite dikes at Katzenbuckel, southwestern Germany. Scale: See Image.
© Canadian Mineralogist

Gabrielite: Tl2AgCu2As3S7

Comments: SEM picture of gabrielite showing the dominant (001) face with striation along a axis and (presumable) twinning along (100). (CanMin, v44:135).
Location: Lengenbach locality, at Binntal, Canton Valais, Switzerland. Scale: See Image.
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Ganterite: [Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2

Comments: Black and white thin-section micrograph of ganterite in white mica schist (sample SS9787) (S.Gt: synkinematic ganterite; P.Gt: postkinematic ganterite. (CanMin 41:1284).
Location: Metamorphosed basement rocks from the Berisal Complex, Simplon Region, Switzerland. Scale: See Image.
© Canadian Mineralogist

Gehlenite: Ca2Al(AlSi)O7

Comments: Contact area between vesuvianite (right) and gehlenite (left). Note the lamellae of clintonite included mainly in the gehlenite crystals (CanMin v. 41. p 1259).
Location: Skarns along the contact of a diorite intrusion at Oravit¸a, Banat, in Romania. Scale: Image size 2.7 mm.
© Canadian Mineralogist

Genkinite: (Pt,Pd)4Sb3

Comments: Genkinite (3), with a typical rim of an undetermined oxidation product (darker grey), closely associated with platarsite (2) and Pt-Fe alloy (1). Chromite crystals (4).
Location: In the Onverwacht and Driekop mines, Transvaal, South Africa. (CanMin, v15:389). Scale: See Image.
© Canadian Mineralogist

Gerenite-(Y): (Ca,Na)2(Y,REE)3Si6O18·2(H2O)

Comments: BSE image of eutectoid intergrowth of quartz (black) and gerenite-(Y) (white). (CanMin, v36:793).
Location: Strange Lake peralkaline complex, Quebec-Labrador boundary, Canada. Scale: Scale Bar 100 µm.
© Canadian Mineralogist