Mineral Specimen Images (U)

Mineral Specimen Images (U)
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Mineral Specimen Images (U) With 116 Images

Uranosphaerite Image

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Uranosphaerite: Bi(UO2)O2(OH)

Comments: Yellow-orange earthy uranosphaerite crusts.
Location: Kersegalec en Lignol, Vendee, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Uranosphaerite Image

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Uranosphaerite: Bi(UO2)O2(OH)

Comments: Yellow-orange earthy uranosphaerite crusts.
Location: Kersegalec en Lignol, Vendee, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Uranospinite Image

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Uranospinite: Ca(UO2)2(AsO4)2·10(H2O)  
Metauranospinite: Ca(UO2)2(AsO4)2·8(H2O)

Comments: Translucent platy uranospinite (probably dehydrated to metauranospinite) microcrystals on matrix.
Location: Grube Buhlskopf, near Ellweiler, Rheinland-Pfalz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Uranospinite Image

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Uranospinite: Ca(UO2)2(AsO4)2·10(H2O)  
Metauranospinite: Ca(UO2)2(AsO4)2·8(H2O)

Comments: Translucent platy uranospinite (probably dehydrated to metauranospinite) microcrystals on matrix.
Location: Grube Buhlskopf, near Ellweiler, Rheinland-Pfalz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Uranpyrochlore Image

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Uranpyrochlore: (U,Ca,Ce)2(Nb,Ta)2O6(OH,F)  
Samarskite-(Y): (Y,Fe+++,U)(Nb,Ta)5O4

Comments: Deep greenish-brown resinous crystalline massive uranpyrochlore with black samarskite-(Y).
Location: Beryl Hill, near Yinnietharra Station, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Uranpyrochlore Image

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Uranpyrochlore: (U,Ca,Ce)2(Nb,Ta)2O6(OH,F)  
Samarskite-(Y): (Y,Fe+++,U)(Nb,Ta)5O4

Comments: Deep greenish-brown resinous crystalline massive uranpyrochlore with black samarskite-(Y).
Location: Beryl Hill, near Yinnietharra Station, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Urea Image

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Urea: CO(NH2)2

Comments: SEM image of tetragonal prismatic crystals of urea.
Location: Ghar al Hibashi Harrat Nawasif/Al Buqum, Kingdom of Saudi Arabia. Scale: See Image.
© Saudi Geological Survey

Urea Image

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Urea: CO(NH2)2

Comments: SEM image of tetragonal prismatic crystals of urea.
Location: Ghar al Hibashi Harrat Nawasif/Al Buqum, Kingdom of Saudi Arabia. Scale: See Image.
© Saudi Geological Survey

Uricite Image

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Uricite: C5H4N4O3

Comments: White powdery uricite aggregate.
Location: Dingo Donga Cave, near Rawlinna, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Uricite Image

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Uricite: C5H4N4O3

Comments: White powdery uricite aggregate.
Location: Dingo Donga Cave, near Rawlinna, Western Australia, Australia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Urusovite Image

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Urusovite: Cu[AlAsO5]

Comments: Green urusovite grain.
Location: Northern Breakthrough, Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Crystal length 0.7 mm.
© Thomas Witzke / Abraxas-Verlag

Urusovite Image

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Urusovite: Cu[AlAsO5]

Comments: Green urusovite grain.
Location: Northern Breakthrough, Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Crystal length 0.7 mm.
© Thomas Witzke / Abraxas-Verlag

Urvantsevite Image

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Urvantsevite: Pd(Bi,Pb)2

Comments: Epoxy grain mount of a fragment of urvantsevite (Urv).
Location: Talnakh Cu-Ni deposit, near noril'sk, Krasnoyarsk region, Russia. Scale: See Image.
© Diederik Visser

Urvantsevite Image

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Urvantsevite: Pd(Bi,Pb)2

Comments: Epoxy grain mount of a fragment of urvantsevite (Urv).
Location: Talnakh Cu-Ni deposit, near noril'sk, Krasnoyarsk region, Russia. Scale: See Image.
© Diederik Visser

Ushkovite Image

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Ushkovite: MgFe+++2(PO4)2(OH)2·8(H2O)  
Roscherite: Ca(Mn++,Fe++)5Be4(PO4)6(OH)4·6(H2O)

Comments: Translucent ushkovite microcrystals with orange roscherite on feldspar.
Location: Galileia, Minas Gerais, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Ushkovite Image

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Ushkovite: MgFe+++2(PO4)2(OH)2·8(H2O)  
Roscherite: Ca(Mn++,Fe++)5Be4(PO4)6(OH)4·6(H2O)

Comments: Translucent ushkovite microcrystals with orange roscherite on feldspar.
Location: Galileia, Minas Gerais, Brazil. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Usovite Image

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Usovite: Ba2CaMgAl2F14

Comments: B&W BSE image of a fragment of usovite (Us) and fluorite (Fl) in an epoxy grain mount section.
Location: Pravaya Noiba River (tributary if the Teya), northeastern Enisei Range, Krasnoyarsk region, Russia. Scale: See Image.
© Diederik Visser

Usovite Image

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Usovite: Ba2CaMgAl2F14

Comments: B&W BSE image of a fragment of usovite (Us) and fluorite (Fl) in an epoxy grain mount section.
Location: Pravaya Noiba River (tributary if the Teya), northeastern Enisei Range, Krasnoyarsk region, Russia. Scale: See Image.
© Diederik Visser

Ussingite Image

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Ussingite: Na2AlSi3O8(OH)  
Vuonnemite: Na11Nb2TiSi4O12(PO4)2O5F2

Comments: Massive, violet colored ussingite with a single bladed partial crystal of white vuonnemite 1.5 cm in length.
Location: Mt. Karnasurf, Lovozero, Russia. Scale: 4.2 x 3 cm.
© John Veevaert

Ussingite Image

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Ussingite: Na2AlSi3O8(OH)  
Cuprostibite: Cu2(Sb,Tl)

Comments: Massive ussingite hosting grains of the very rare copper antimony-thallium bearing cuprostibite.
Location: Ilimaussaq, Tasseq, Greenland. Scale: 4.8 x3.4 cm.
© John Veevaert
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