Mineral Specimen Images (O)

Mineral Specimen Images (O)
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Mineral Specimen Images (O) With 142 Images

Olenite Image

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Olenite: NaAl3Al6(BO3)3(Si6O18)(O,OH)4

Comments: Colorless, boron-rich crystal of Olenite in quartz.
Location: Koralpe, Styria, Austria. Scale: Crystal size 3 cm.
© Andreas Ertl / Institut für Mineralogie und Kristallographie

Olenite Image

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Olenite: NaAl3Al6(BO3)3(Si6O18)(O,OH)4

Comments: Colorless, boron-rich crystal of Olenite in quartz.
Location: Koralpe, Styria, Austria. Scale: Crystal size 3 cm.
© Andreas Ertl / Institut für Mineralogie und Kristallographie

Olgite Image

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Olgite: Na(Sr,Ba)PO4

Comments: Green mm-sized olgite crystals in matrix.
Location: Kedykverpakhk Mt., Lovozero, Kola, Russia. Scale: Not Given.
© Sergey Vasiliev / Systematic Mineralogy

Olgite Image

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Olgite: Na(Sr,Ba)PO4

Comments: Green mm-sized olgite crystals in matrix.
Location: Kedykverpakhk Mt., Lovozero, Kola, Russia. Scale: Not Given.
© Sergey Vasiliev / Systematic Mineralogy

Oligoclase Image

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Oligoclase: (Na,Ca)(Si,Al)4O8  
Plagioclase: (Na,Ca)(Si,Al)4O8

Comments: Rectangular cleavage fragment of salmon-orange oligoclase (sunstone) feldspar.
Location: Norway. Scale: 47x30x7 mm.
© John Betts - Fine Minerals

Oligoclase Image

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Oligoclase: (Na,Ca)(Si,Al)4O8  
Plagioclase: (Na,Ca)(Si,Al)4O8

Comments: Clear glassy crystalline oligoclase with milky quartz and muscovite.
Location: Bakersville, Mitchell County, North Carolina, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Oligoclase Image

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Oligoclase: (Na,Ca)(Si,Al)4O8  
Plagioclase: (Na,Ca)(Si,Al)4O8

Comments: Rectangular cleavage fragment of salmon-orange oligoclase (sunstone) feldspar.
Location: Norway. Scale: 47x30x7 mm.
© John Betts - Fine Minerals

Oligoclase Image

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Oligoclase: (Na,Ca)(Si,Al)4O8  
Plagioclase: (Na,Ca)(Si,Al)4O8

Comments: Clear glassy crystalline oligoclase with milky quartz and muscovite.
Location: Bakersville, Mitchell County, North Carolina, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Olivenite Image

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Olivenite: Cu2AsO4(OH)  
Arsenogoyazite: (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5·(H2O)

Comments: White micro-botryoids of arsenogoyazite with light green acicular crystal sprays of olivenite and dark green malachite on brown limonite.
Location: Centennial Eureka Mine, Juab County, Utah. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Olivenite Image

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Olivenite: Cu2AsO4(OH)  
Alumopharmacosiderite: KAl4(AsO4)3(OH)4·6·5(H2O)

Comments: Minute white specks of alumopharmacosiderite, with tan olivenite and unknown orange material.
Location: Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA. Scale: Picture Size 2 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Olivenite Image

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Olivenite: Cu2AsO4(OH)  
Arsenogoyazite: (Sr,Ca,Ba)Al3(AsO4,PO4)2(OH,F)5·(H2O)

Comments: White micro-botryoids of arsenogoyazite with light green acicular crystal sprays of olivenite and dark green malachite on brown limonite.
Location: Centennial Eureka Mine, Juab County, Utah. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Olivenite Image

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Olivenite: Cu2AsO4(OH)

Comments: Dark green crystals of olivenite on matrix.
Location: Majuba Hill mine, Pershing County, Nevada, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Olivenite Image

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Olivenite: Cu2AsO4(OH)  
Alumopharmacosiderite: KAl4(AsO4)3(OH)4·6·5(H2O)

Comments: Minute white specks of alumopharmacosiderite, with tan olivenite and unknown orange material.
Location: Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA. Scale: Picture Size 2 mm.
© Jeff Weissman / Photographic Guide to Mineral Species

Olivenite Image

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Olivenite: Cu2AsO4(OH)

Comments: Dark green crystals of olivenite on matrix.
Location: Majuba Hill mine, Pershing County, Nevada, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Olivine Image

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Olivine: (Mg,Fe)2SiO4  
Forsterite: Mg2SiO4

Comments: Peridot (Forsterite) recrystallized at the base.
Location: Skardu, Nooristan, Pakistan. Scale: 2.5 x 2.7 cm.
© Fabre Minerals

Olivine Image

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Olivine: (Mg,Fe)2SiO4  
Forsterite: Mg2SiO4

Comments: Peridot (Forsterite) recrystallized at the base.
Location: Skardu, Nooristan, Pakistan. Scale: 2.5 x 2.7 cm.
© Fabre Minerals

Olmiite Image

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Olmiite: CaMn[SiO3(OH)](OH)

Comments: Spherical aggregate of prismatic crystals of pinkish tan olmiite..
Location: N'chwaning II Mine, section 5 south stope, 46-47 roof, Kuruman South Africa. Scale: Specimen size 2.5 × 2 × 1.4 cm.
© Fabre Minerals

Olmiite Image

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Olmiite: CaMn[SiO3(OH)](OH)

Comments: Spherical aggregate of prismatic crystals of pinkish tan olmiite..
Location: N'chwaning II Mine, section 5 south stope, 46-47 roof, Kuruman South Africa. Scale: Specimen size 2.5 × 2 × 1.4 cm.
© Fabre Minerals

Olmsteadite Image

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Olmsteadite: KFe++2(Nb,Ta)(PO4)2O2·2(H2O)

Comments: Dark brown crystals of olmsteadite with jahnsite on siderite.
Location: Big Chief mine, Keystone, Penningtion County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Olmsteadite Image

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Olmsteadite: KFe++2(Nb,Ta)(PO4)2O2·2(H2O)

Comments: Dark brown crystals of olmsteadite with jahnsite on siderite.
Location: Big Chief mine, Keystone, Penningtion County, South Dakota, USA. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals
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