Thomas Witzke's Image Gallery

Thomas Witzke's Image Gallery
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Images from Thomas Witzke

Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.

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Thomas Witzke's Image Gallery With 518 Images

Abelsonite Image

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Abelsonite: Ni++C31H32N4

Comments: Purplish red crystal fragment of abelsonite.
Location: Green River formation, Uintah County, Utah, USA. Scale: Crystal size 1.8 mm.
© Thomas Witzke / Abraxas-Verlag

Abhurite Image

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Abhurite: Sn3O(OH)2Cl2

Comments: Brownish tabular crystals of abhurite.
Location: Shipwreck "Hydra", South coast of Norway. Scale: Picture Size 5 mm.
© Thomas Witzke

Aegirine Image

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Aegirine: NaFe+++Si2O6  
Henrymeyerite: BaFe++Ti7O16

Comments: A nearly black crystal of henrymeyerite with dark green prismatic crystals of aegirine in quartz.
Location: Green River formation, Uintah County, Utah, USA. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Aegirine Image

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Aegirine: NaFe+++Si2O6  
Lourenswalsite: (K,Ba)2(Ti,Mg,Ca,Fe)4(Si,Al,Fe)6O14(OH)12

Comments: Light brownish rosettes of lourenswalsite with dark green crystals of aegirine and white feldspar.
Location: Diamond Jo quarry, Magnet Cove, Hot Springs Co., Arkansas, USA. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Aerugite Image

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Aerugite: ([ ],Ni)9(AsO4)2(AsO6) (?)

Comments: Small dark green crystals of aerugite.
Location: Johanngeorgenstadt, Erzgebirge, Saxony, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Aheylite Image

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Aheylite: (Fe++,Zn)Al6(PO4)4(OH)8·4(H2O)

Comments: Colorless radiating spray of aheylite crystals.
Location: Huanuni, Bolivia. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Aktashite Image

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Aktashite: Cu6Hg3As4S12

Comments: Metallic gray grain of aktashite in quartz gangue.
Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Alacranite Image

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Alacranite: As8S9

Comments: Red crystals of alacranite.
Location: Mine Wilmsdorfer Schacht, Possendorf near Dresden, Sachsen, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Allanite-(Y) Image

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Allanite-(Y): (Y,Ce,Ca)2(Al,Fe+++)3(SiO4)3(OH)

Comments: Dark brown allanite-(Y) in matrix.
Location: Boden, Marienberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 10 mm.
© Thomas Witzke / Abraxas-Verlag

Allargentum Image

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Allargentum: Ag1-xSbx(x=0.009-0.16)

Comments: Irregular crystalline aggregate grain of allargentum.
Location: Shaft 371, Schlema-Hartenstein area, Erzgebirge, Saxony, Germany. Scale: Specimen size 43 mm.
© Thomas Witzke / Abraxas-Verlag

Allophane Image

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Allophane: Al2O3·(SiO2)1.3-2·((H2O))2.5-3

Comments: Blue, cuprian, botryoidal allophane on matrix.
Location: Reiche Zeche Mine, Himmelfahrt Mine, Freiberg, Freiberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Alsakharovite-Zn Image

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Alsakharovite-Zn: NaSrKZn(Ti,Nb)4(Si4O12)2(O,OH)4·7(H2O)

Comments: Light brown crystal fragment of alsakharovite-Zn.
Location: Lepkhe Nelm Mountain, Lovozero, Kola Peninsula, Russia. Scale: Crystal size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Aluminocopiapite Image

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Aluminocopiapite: Al2/3Fe+++4(SO4)6O(OH)2·20(H2O)

Comments: Small yellow crystals of aluminocopiapite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Aluminum Image

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Aluminum: Al

Comments: Native aluminum in a polished section.
Location: From a mud volcano in the Caspian Sea near Baku, Azerbaidzhan. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Alumohydrocalcite Image

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Alumohydrocalcite: CaAl2(CO3)2(OH)4·3(H2O)

Comments: Pinkish-white globular aggregates of alumohydrocalcite.
Location: Carriere de Richelle, Vise, Belgium. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Alumoklyuchevskite Image

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Alumoklyuchevskite: K3Cu3AlO2(SO4)4

Comments: Very small olive-greenish prismatic crystals of alumoklyuchevskite.
Location: Tolbachik volcano, Kamchatka, Russia. Scale: Sample size 1.8 x 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Alunogen Image

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Alunogen: Al2(SO4)3·17(H2O)  
Jarosite: KFe+++3(SO4)2(OH)6

Comments: Colorless to white, tabular crystals alunogen on reddish jarosite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Alunogen Image

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Alunogen: Al2(SO4)3·17(H2O)  
Metavoltine: K4Na4(Fe++,Zn)Fe+++6(SO4)12O2·20(H2O)

Comments: Yellow metavoltine with white alunogen.
Location: Carola Mine, Freital, near Dresden, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Alunogen Image

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Alunogen: Al2(SO4)3·17(H2O)  
Voltaite: K2Fe++5Fe+++3Al(SO4)12·18(H2O)

Comments: Dark greenish-black crystals of voltaite on white alunogen.
Location: Carola Mine, Freital, Dresden, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Amblygonite Image

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Amblygonite: (Li,Na)Al(PO4)(F,OH)

Comments: Grayish, massive amblygonite from the type locality.
Location: Chursdorf, Penig, Chemnitz, Saxony, Germany. Scale: Specimen size 35 mm.
© Thomas Witzke / Abraxas-Verlag
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