Mineral Specimen Images (F)

Mineral Specimen Images (F)
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Mineral Specimen Images (F) With 414 Images

Ferchromide Image

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Ferchromide: Cr3Fe1-x(x=0,6)

Comments: Metallic microcrystal of ferchromide.
Location: Verkhneivinsk, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferchromide Image

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Ferchromide: Cr3Fe1-x(x=0,6)

Comments: Metallic microcrystal of ferchromide.
Location: Verkhneivinsk, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferdisilicite Image

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Ferdisilicite: FeSi2  
Fersilicite: FeSi

Comments: Dark grains of ferdisilicite, in sand, intermixed with dark grains of fersilicate.
Location: Poltava series, Zachativsk station, Donets (Donetsk) region, Donets'k Oblast' (Donetsk Oblast'), Ukraine. Scale: 0.2 cm field of view.
© Jeff Weissman / Photographic Guide to Mineral Species

Ferdisilicite Image

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Ferdisilicite: FeSi2  
Fersilicite: FeSi

Comments: Dark grains of ferdisilicite, in sand, intermixed with dark grains of fersilicate.
Location: Poltava series, Zachativsk station, Donets (Donetsk) region, Donets'k Oblast' (Donetsk Oblast'), Ukraine. Scale: 0.2 cm field of view.
© Jeff Weissman / Photographic Guide to Mineral Species

Fergusonite-beta-(Ce) Image

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Fergusonite-beta-(Ce): (Ce,La,Nd)NbO4

Comments: Dark brown vitreous amorphous (metamict) fragments of fergusonite-beta-(Ce).
Location: Amherst County, Virginia, USA. Scale: See Image.
© Rruff Database

Fergusonite-beta-(Ce) Image

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Fergusonite-beta-(Ce): (Ce,La,Nd)NbO4

Comments: Dark brown vitreous amorphous (metamict) fragments of fergusonite-beta-(Ce).
Location: Amherst County, Virginia, USA. Scale: See Image.
© Rruff Database

Fergusonite-beta-(Y) Image

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Fergusonite-beta-(Y): YNbO4

Comments: Black crystal of fergusonite-β-(Y) in matrix.
Location: Fukushima City, Fukushima Prefecture, Japan. Scale: Crystal Size 6 mm.
© Nagashima mineral collection

Fergusonite-beta-(Y) Image

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Fergusonite-beta-(Y): YNbO4

Comments: Black crystal of fergusonite-β-(Y) in matrix.
Location: Fukushima City, Fukushima Prefecture, Japan. Scale: Crystal Size 6 mm.
© Nagashima mineral collection

Fergusonite-(Nd) Image

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Fergusonite-(Nd): (Nd,Ce)(Nb,Ti)O4  
Ferriallanite-(Ce): CaCe(Fe+++,Fe++,Al)3[SiO4][Si2O7]O(OH)

Comments: Orange-brown ferusonite-(Nd) grains in ferriallanite-(Ce) zone of the vein. Main black inclusions are ferriallanite-(Ce) crystals. White matrix is mixture of calcian strontianite and strontian calcite.
Location: Tornebohmite vein, Biraya Fe-REE ore occurrence, Biraya and Bya Rivers confluence area (Chara Basin), Vitim Plateau, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia. Scale: FOV 1 cm.
© Pavel M. Kartashov

Fergusonite-(Nd) Image

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Fergusonite-(Nd): (Nd,Ce)(Nb,Ti)O4  
Ferriallanite-(Ce): CaCe(Fe+++,Fe++,Al)3[SiO4][Si2O7]O(OH)

Comments: Orange-brown ferusonite-(Nd) grains in ferriallanite-(Ce) zone of the vein. Main black inclusions are ferriallanite-(Ce) crystals. White matrix is mixture of calcian strontianite and strontian calcite.
Location: Tornebohmite vein, Biraya Fe-REE ore occurrence, Biraya and Bya Rivers confluence area (Chara Basin), Vitim Plateau, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia. Scale: FOV 1 cm.
© Pavel M. Kartashov

Fergusonite-(Y) Image

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Fergusonite-(Y): YNbO4  
Plumbopyrochlore: (Pb,Y,U,Ca)2-xNb2O6(OH)

Comments: Brown resinous fergusonite-(Y) (as per communication with Pavel M. Kartashov) with yellowish plumbopyrochlore.
Location: Ploskaya Mountain, Keivy Region, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fergusonite-(Y) Image

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Fergusonite-(Y): YNbO4

Comments: Heavy mass of fergusonite-(Y) with one face polished flat to show the solid interior. Radioactive.
Location: Ambatofotsy, Betafo - Antsirabé region, Antananarivo Province, Madagascar. Scale: 6x2.5x1.5 cm.
© John Betts - Fine Minerals

Fergusonite-(Y) Image

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Fergusonite-(Y): YNbO4

Comments: Heavy mass of fergusonite-(Y) with one face polished flat to show the solid interior. Radioactive.
Location: Ambatofotsy, Betafo - Antsirabé region, Antananarivo Province, Madagascar. Scale: 6x2.5x1.5 cm.
© John Betts - Fine Minerals

Fergusonite-(Y) Image

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Fergusonite-(Y): YNbO4  
Plumbopyrochlore: (Pb,Y,U,Ca)2-xNb2O6(OH)

Comments: Brown resinous fergusonite-(Y) (as per communication with Pavel M. Kartashov) with yellowish plumbopyrochlore.
Location: Ploskaya Mountain, Keivy Region, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fermorite Image

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Fermorite: (Ca,Sr)5(AsO4,PO4)3(OH)

Comments: Pinkish crystalline massive fermorite.
Location: Sitipar, Chindwara District, India. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fermorite Image

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Fermorite: (Ca,Sr)5(AsO4,PO4)3(OH)

Comments: Pinkish crystalline massive fermorite.
Location: Sitipar, Chindwara District, India. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fernandinite Image

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Fernandinite: CaV8O20·4(H2O)

Comments: Greenish-yellow fernandinite coatings on sandstone.
Location: Deremo-Snyder Mine, Egnar, San Miguel County, Colorado. USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Fernandinite Image

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Fernandinite: CaV8O20·4(H2O)

Comments: Greenish-yellow fernandinite coatings on sandstone.
Location: Deremo-Snyder Mine, Egnar, San Miguel County, Colorado. USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Feroxyhyte Image

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Feroxyhyte: Fe+++O(OH)

Comments: Brown botryoidal feroxyhyte.
Location: Pachi Limani, Laurium, Attiki, Greece. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Feroxyhyte Image

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Feroxyhyte: Fe+++O(OH)

Comments: Brown botryoidal feroxyhyte.
Location: Pachi Limani, Laurium, Attiki, Greece. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
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