Thomas Witzke's Image Gallery

Images from Thomas Witzke

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Thomas Witzke's Image Gallery With 1036 Images

Birnessite Image

Images:

Birnessite: (Na,Ca,K)x(Mn++++,Mn+++)2O4·1.5(H2O)

Comments: Gray birnessite. Very small crystals on massive material.
Location: Das Aufgeklärte Glück Mine, Hasserode, Wernigerode, Harz Mts, Saxony-Anhalt, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Birnessite Image

Images:

Birnessite: (Na,Ca,K)x(Mn++++,Mn+++)2O4·1.5(H2O)

Bischofite Image

Images:

Bischofite: MgCl2·6(H2O)

Comments: Colorless grains of bischofite. The mineral is very hygroscopic and must be stored in a closed vial.
Location: Stassfurt, Stassfurt Deposit, Saxony-Anhalt, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Bischofite Image

Images:

Bischofite: MgCl2·6(H2O)

Bismutocolumbite Image

Images:

Bismutocolumbite: Bi(Nb,Ta)O4

Comments: Black crystals of bismutocolumbite.
Location: Malkhan, Krasny Chikoy, Transbaikalia, Siberia. Scale: Picture Size 5 mm.
© Thomas Witzke

Bismutocolumbite Image

Images:

Bismutocolumbite: Bi(Nb,Ta)O4

Comments: Black crystals of bismutocolumbite.
Location: Malkhan, Krasny Chikoy, Transbaikalia, Siberia. Scale: Picture Size 5 mm.
© Thomas Witzke

Bismutoferrite Image

Images:

Bismutoferrite: BiFe+++2(SiO4)2(OH)

Comments: Yellow-greenish, earthy bismutoferrite.
Location: Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Specimen size 8.5 cm.
© Thomas Witzke / Abraxas-Verlag

Bismutoferrite Image

Images:

Bismutoferrite: BiFe+++2(SiO4)2(OH)

Comments: Yellow-greenish, earthy bismutoferrite.
Location: Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Specimen size 8.5 cm.
© Thomas Witzke / Abraxas-Verlag

Bismutomicrolite Image

Images:

Bismutomicrolite: (Bi,Ca)(Ta,Nb)2O6(OH)

Comments: A dark crystal of bismutomicrolite in pearly muscovite.
Location: Malkhan Range, Krasny Chikoy, Chitinskaya Oblast', Transbaikalia, Eastern-Siberian Region, Russia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Bismutomicrolite Image

Images:

Bismutomicrolite: (Bi,Ca)(Ta,Nb)2O6(OH)

Blodite Image

Images:

Blodite: Na2Mg(SO4)2·4(H2O)
Tamarugite: NaAl(SO4)2·6(H2O)

Comments: Clear, yellow blödite with white tamarugite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Blodite Image

Images:

Blodite: Na2Mg(SO4)2·4(H2O)
Tamarugite: NaAl(SO4)2·6(H2O)

Comments: Clear, yellow blödite with white tamarugite.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Boracite Image

Images:

Boracite: Mg3B7O13Cl

Comments: A greenish crystal of boracite, a tetrahedron modified by cube and dodecahedral faces.
Location: Bernburg, Sachsen-Anhalt, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Boracite Image

Images:

Boracite: Mg3B7O13Cl

Boussingaultite Image

Images:

Boussingaultite: (NH4)2Mg(SO4)2·6(H2O)

Comments: White, crystalline aggregates boussingaultite.
Location: Anna Mine, Alsdorf, Aachen, North Rhine-Westphalia, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Boussingaultite Image

Images:

Boussingaultite: (NH4)2Mg(SO4)2·6(H2O)

Comments: White, crystalline aggregates boussingaultite.
Location: Anna Mine, Alsdorf, Aachen, North Rhine-Westphalia, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Brannerite Image

Images:

Brannerite: (U,Ca,Ce)(Ti,Fe)2O6

Comments: Black grains of brannerite with gold and other minerals.
Location: Witwatersrand field, South Africa. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Brannerite Image

Images:

Brannerite: (U,Ca,Ce)(Ti,Fe)2O6

Comments: Black grains of brannerite with gold and other minerals.
Location: Witwatersrand field, South Africa. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Brendelite Image

Images:

Brendelite: (Bi,Pb)2Fe(PO4)(O,OH)3

Comments: Small brown tabular crystals of brendelite on matrix.
Location: Güldener Falk Mine, Schneeberg, Erzgebirge, Sachsen, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Brendelite Image

Images:

Brendelite: (Bi,Pb)2Fe(PO4)(O,OH)3

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