Mineral Specimen Images (R)

Mineral Specimen Images (R)
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Mineral Specimen Images (R) With 348 Images

Roedderite Image

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Roedderite: (Na,K)2(Mg,Fe++)5Si12O30

Comments: Deep green transparent roedderite microcrystal.
Location: Bellerberg, Eifel, Rheinland-Pflaz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Roedderite Image

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Roedderite: (Na,K)2(Mg,Fe++)5Si12O30

Comments: Deep green transparent roedderite microcrystal.
Location: Bellerberg, Eifel, Rheinland-Pflaz, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Roggianite Image

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Roggianite: Ca2[Be(OH)2Al2Si4O13]·<2·5(H2O)

Comments: Glassy white fibrous roggianite aggregate.
Location: Murzinka, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Roggianite Image

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Roggianite: Ca2[Be(OH)2Al2Si4O13]·<2·5(H2O)

Comments: Glassy white fibrous roggianite aggregate.
Location: Murzinka, Sverdlovsk District, Middle Urals, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rokuhnite Image

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Rokuhnite: Fe++Cl2·(H2O)  
Carnallite: KMgCl3·6(H2O)

Comments: Reddish brown rokuhnite, with carnallite (deliquescent).
Location: Salzdetfurth Mine, Hildesheim, near Hanover, Niedersachsen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Rokuhnite Image

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Rokuhnite: Fe++Cl2·(H2O)  
Carnallite: KMgCl3·6(H2O)

Comments: Reddish brown rokuhnite, with carnallite (deliquescent).
Location: Salzdetfurth Mine, Hildesheim, near Hanover, Niedersachsen, Germany. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Romanechite Image

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Romanechite: (Ba,H2O)2(Mn++++,Mn+++)5O10

Comments: Black botryoidal romanèchite.
Location: Callenberg North (no. 2) open cut, Callenberg, Glauchau, Saxony, Germany. Scale: Specimen size 9 mm.
© Thomas Witzke / Abraxas-Verlag

Romanechite Image

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Romanechite: (Ba,H2O)2(Mn++++,Mn+++)5O10

Comments: Black botryoidal romanèchite.
Location: Callenberg North (no. 2) open cut, Callenberg, Glauchau, Saxony, Germany. Scale: Specimen size 9 mm.
© Thomas Witzke / Abraxas-Verlag

Romanite Image

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Romanite: (Fe++,U,Pb)2(Ti,Fe+++)O4

Comments: Black, massive coarse-grained aggregate of romanite from amphibolites and its radioactivity is 335 µR/h.
Location: Dzhigda U ore occurrence, Dambuki ore cluster, Amurskaya Oblast', Far-Eastern Region, Russia. Scale: Specimen Size 3x2x1.8 cm.
© Pavel M. Kartashov

Romanite Image

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Romanite: (Fe++,U,Pb)2(Ti,Fe+++)O4

Comments: Black, massive coarse-grained aggregate of romanite from amphibolites and its radioactivity is 335 µR/h.
Location: Dzhigda U ore occurrence, Dambuki ore cluster, Amurskaya Oblast', Far-Eastern Region, Russia. Scale: Specimen Size 3x2x1.8 cm.
© Pavel M. Kartashov

Romarchite Image

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Romarchite: SnO

Comments: SEM photograph of romarchite precipitating on quartz sand grains on the surface of a pewter artifact. (Geoarchaeology, 19:538).
Location: Wreck of the Queen Anne’s Revenge (A.D. 1718). Scale: Scale Bar 30 µm.
© Geoarchaeology

Romarchite Image

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Romarchite: SnO

Comments: SEM photograph of romarchite precipitating on quartz sand grains on the surface of a pewter artifact. (Geoarchaeology, 19:538).
Location: Wreck of the Queen Anne’s Revenge (A.D. 1718). Scale: Scale Bar 30 µm.
© Geoarchaeology

Romeite Image

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Romeite: (Ca,Fe++,Mn,Na)2(Sb,Ti)2O6(O,OH,F)

Comments: Tan fibrous romeite on quartz.
Location: Sant Marcel, Piemonte, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Romeite Image

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Romeite: (Ca,Fe++,Mn,Na)2(Sb,Ti)2O6(O,OH,F)

Comments: Tan fibrous romeite on quartz.
Location: Sant Marcel, Piemonte, Italy. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Romerite Image

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Romerite: Fe++Fe+++2(SO4)4·14(H2O)

Comments: Massive, pale reddish-brown Römerite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Specimen size 5.8 cm.
© Thomas Witzke / Abraxas-Verlag

Romerite Image

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Romerite: Fe++Fe+++2(SO4)4·14(H2O)

Comments: Massive, pale reddish-brown Römerite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Specimen size 5.8 cm.
© Thomas Witzke / Abraxas-Verlag

Rondorfite Image

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Rondorfite: Ca8Mg(SiO4)4Cl2  
Kumtyubeite: Ca5(SiO4)2F2  
Srebrodolskite: Ca2Fe+++2O5  
Wadalite: Ca6Al5Si2O16Cl3

Comments: BSE image of kumtyubeite (Kmt) associated with srebrodolskite (Srb), bultfonteinite (Blt), Ca- kydrosilicates, wadalite (Wad), rondorfite (Rndr), and ettringite (dark gray). (AmMin, v94:1361).
Location: Rock-forming mineral found in skarn carbonate-xenoliths in ignimbrites of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. Scale: See Image.
© American Mineralogist

Rondorfite Image

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Rondorfite: Ca8Mg(SiO4)4Cl2

Comments: Brown to orange, shiny, massive rondorfite in matrix.
Location: Bellerberg, Eifel, Germany. Scale: Not Given.
© Diederik Visser

Rondorfite Image

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Rondorfite: Ca8Mg(SiO4)4Cl2  
Kumtyubeite: Ca5(SiO4)2F2  
Srebrodolskite: Ca2Fe+++2O5  
Wadalite: Ca6Al5Si2O16Cl3

Comments: BSE image of kumtyubeite (Kmt) associated with srebrodolskite (Srb), bultfonteinite (Blt), Ca- kydrosilicates, wadalite (Wad), rondorfite (Rndr), and ettringite (dark gray). (AmMin, v94:1361).
Location: Rock-forming mineral found in skarn carbonate-xenoliths in ignimbrites of the Upper Chegem volcanic structure, Kabardino-Balkaria, Northern Caucasus, Russia. Scale: See Image.
© American Mineralogist

Rondorfite Image

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Rondorfite: Ca8Mg(SiO4)4Cl2

Comments: Brown to orange, shiny, massive rondorfite in matrix.
Location: Bellerberg, Eifel, Germany. Scale: Not Given.
© Diederik Visser
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