Mineral Specimen Images (A)

Mineral Specimen Images (A)
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Mineral Specimen Images (A) With 620 Images

Ardennite-(As) Image

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Ardennite-(As): (Mn++,Ca,Mg)4(Al,Mg,Fe)6(SiO4)2(Si3O10)(AsO4,VO4)(OH)6

Comments: Yellow ardennite crystals in white quartz matrix.
Location: Salmchâteau, Vielsalm, Stavelot Massif, Ardennes, Luxembourg Province, Belgium. Scale: 30x20x17 mm.
© John Betts - Fine Minerals

Ardennite-(As) Image

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Ardennite-(As): (Mn++,Ca,Mg)4(Al,Mg,Fe)6(SiO4)2(Si3O10)(AsO4,VO4)(OH)6

Comments: Yellow ardennite crystals in white quartz matrix.
Location: Salmchâteau, Vielsalm, Stavelot Massif, Ardennes, Luxembourg Province, Belgium. Scale: 30x20x17 mm.
© John Betts - Fine Minerals

Arfvedsonite Image

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Arfvedsonite: NaNa2(Fe++4Fe+++)Si8O22(OH)2

Comments: Prismatic crystals of black arfvedsonite in white feldspar matrix.
Location: Kangerdluarsuk, Ilímaussaq Massif, Greenland. Scale: 8x3x3 cm.
© John Betts - Fine Minerals

Arfvedsonite Image

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Arfvedsonite: NaNa2(Fe++4Fe+++)Si8O22(OH)2  
Seidozerite: (Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2

Comments: Dark red translucent seidozerite with vitreous, black arfvedsonite.
Location: Seidozero Lake, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arfvedsonite Image

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Arfvedsonite: NaNa2(Fe++4Fe+++)Si8O22(OH)2  
Seidozerite: (Na,Ca)2(Zr,Ti,Mn)2Si2O7(O,F)2

Comments: Dark red translucent seidozerite with vitreous, black arfvedsonite.
Location: Seidozero Lake, Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Arfvedsonite Image

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Arfvedsonite: NaNa2(Fe++4Fe+++)Si8O22(OH)2

Comments: Prismatic crystals of black arfvedsonite in white feldspar matrix.
Location: Kangerdluarsuk, Ilímaussaq Massif, Greenland. Scale: 8x3x3 cm.
© John Betts - Fine Minerals

Argentite Image

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Argentite: Ag2S  
Acanthite: Ag2S

Comments: Dark metallic acanthite crystals up to 3 mm. Most of the crystals are a cubic habit, so the acanthite is pseudomorphing the original argentite.
Location: San Juan de Rayas Mine (Rayas Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico. Scale: 18x12x12 mm.
© John Betts - Fine Minerals

Argentite Image

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Argentite: Ag2S  
Acanthite: Ag2S

Comments: Dark metallic acanthite crystals up to 3 mm. Most of the crystals are a cubic habit, so the acanthite is pseudomorphing the original argentite.
Location: San Juan de Rayas Mine (Rayas Mine), Guanajuato, Mun. de Guanajuato, Guanajuato, Mexico. Scale: 18x12x12 mm.
© John Betts - Fine Minerals

Argentojarosite Image

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Argentojarosite: AgFe+++3(SO4)2(OH)6

Comments: Yellow crystalline massive argentojarosite.
Location: Eagle Mine, Juab County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Argentojarosite Image

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Argentojarosite: AgFe+++3(SO4)2(OH)6

Comments: Yellow crystalline massive argentojarosite.
Location: Eagle Mine, Juab County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Argentopentlandite Image

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Argentopentlandite: Ag(Fe,Ni)8S8  
Maucherite: Ni11As8

Comments: Reflected light image of a polished section containing argentopentlandite (AgP) with galena (G), native silver (Ag), chalcopyrite (Ch) and maucherite (M).
Location: Silver City, Ontonagon Co., Michigan, USA. Scale: Picture Size 900 µm.
© Jeff Weissman / Photographic Guide to Mineral Species

Argentopentlandite Image

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Argentopentlandite: Ag(Fe,Ni)8S8  
Maucherite: Ni11As8

Comments: Reflected light image of a polished section containing argentopentlandite (AgP) with galena (G), native silver (Ag), chalcopyrite (Ch) and maucherite (M).
Location: Silver City, Ontonagon Co., Michigan, USA. Scale: Picture Size 900 µm.
© Jeff Weissman / Photographic Guide to Mineral Species

Argentopyrite Image

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Argentopyrite: AgFe2S3

Comments: Metallic, twinned argentopyrite grain on matrix.
Location: St. Andreasberg, Harz, Lower Saxony, Germany. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Argentopyrite Image

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Argentopyrite: AgFe2S3

Comments: Metallic, twinned argentopyrite grain on matrix.
Location: St. Andreasberg, Harz, Lower Saxony, Germany. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Argutite Image

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Argutite: GeO2

Comments: Sub microscopic grains of argutite invisible to the eye within sphalerite.
Location: Rimbatz, Argut-Dessus, Haute-Garonne, Midi-Pyrénées, France. Scale: Thumbnail 2.5 x 2 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Argutite Image

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Argutite: GeO2

Comments: Sub microscopic grains of argutite invisible to the eye within sphalerite.
Location: Rimbatz, Argut-Dessus, Haute-Garonne, Midi-Pyrénées, France. Scale: Thumbnail 2.5 x 2 x 1.5 cm.
© Tom Loomis / Dakota Matrix

Argyrodite Image

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Argyrodite: Ag8GeS6

Comments: Lead gray metallic aggregate of argyrodite crystals.
Location: Veta Galufa, Colquechaca, Potosi Dept., Bolivia. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Argyrodite Image

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Argyrodite: Ag8GeS6

Comments: Gray, metallic, massive, crystalline argyrodite ore.
Location: Himmelsfürst mine, Brand-Erbisdorf bei Freiberg, Erzgebirge, Sachsen. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Argyrodite Image

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Argyrodite: Ag8GeS6

Comments: Lead gray metallic aggregate of argyrodite crystals.
Location: Veta Galufa, Colquechaca, Potosi Dept., Bolivia. Scale: Size Not Given.
© Lou Perloff / Photo Atlas of Minerals

Argyrodite Image

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Argyrodite: Ag8GeS6

Comments: Gray, metallic, massive, crystalline argyrodite ore.
Location: Himmelsfürst mine, Brand-Erbisdorf bei Freiberg, Erzgebirge, Sachsen. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag
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