Thomas Witzke's Image Gallery

Thomas Witzke's Image Gallery
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Images from Thomas Witzke

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Thomas Witzke's Image Gallery With 518 Images

Bazhenovite Image

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Bazhenovite: CaS5·CaS2O3·6Ca(OH)2·20(H2O)

Comments: Yellow, bladed crystals of bazhenovite on matrix.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Bazzite Image

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Bazzite: Be3(Sc,Al)2Si6O18

Comments: Blue crystals of bazzite.
Location: Thiemendorf near Königshain, Lausitz, Sachsen, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Behierite Image

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Behierite: (Ta,Nb)BO4

Comments: A light brownish crystal of behierite in matrix.
Location: Manjaka, Sahatany Valley, Antsirabe Region, Madagascar. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Belendorffite Image

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Belendorffite: Cu7Hg6

Comments: Small grains of belendorffite from concentrates.
Location: Moschellandsberg, Pfalz, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Bellbergite Image

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Bellbergite: (K,Ba,Sr)2Sr2Ca2(Ca,Na)4Al18Si18O72·30(H2O)

Comments: Small colorless to white hexagonal crystals of bellbergite on matrix.
Location: Ettringer Bellerberg, Ettringen, near Mayen, Eifel Mts, Rhineland-Palatinate, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Bellingerite Image

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Bellingerite: Cu++3(IO3)6·2(H2O)

Comments: Green crystal of bellingerite on matrix.
Location: Chuquicamata, Antofagasta, Chile. Scale: Picture size 8 mm.
© Thomas Witzke / Abraxas-Verlag

Betpakdalite Image

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Betpakdalite: [Mg(H2O)6]Ca2(H2O)13[Mo++++++8As+++++2Fe+++3O36(OH)]·4(H2O)

Comments: Yellow crust of betpakdalite on quartzite.
Location: Sadisdorf, Erzgebirge, Sachsen, Germany. Scale: 10 x 6 cm.
© Thomas Witzke / Abraxas-Verlag

Beusite Image

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Beusite: (Mn++,Fe++,Ca,Mg)3(PO4)2

Comments: Massive pale pinkish-beige beusite with blue vivianite.
Location: Remmelberg, Oberpfalz, Bavaria, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Biehlite Image

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Biehlite: (Sb,As)2MoO6

Comments: White fibrous crystals of biehlite.
Location: Tsumeb, Namibia. Scale: Picture size 8 mm.
© Thomas Witzke / Abraxas-Verlag

Bindheimite Image

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Bindheimite: Pb2Sb2O6(O,OH)

Comments: Yellow earthy bindheimite covering red, massive crocoite.
Location: Callenberg North (no. 1) open cut, Callenberg, Glauchau, Saxony, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Birnessite Image

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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

Bischofite Image

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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

Bismutocolumbite Image

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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

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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

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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

Blodite Image

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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

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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

Bornite Image

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Bornite: Cu5FeS4  
Isomertieite: Pd11Sb2As2  
Arsenopalladinite: Pd8(As,Sb)3  
Gold: Au

Comments: Light grayish grain of intimately intergrown isomertieite and arsenopalladinite (in the center of the picture), with pale yellow gold and brownish to violet bornite. Polished section (from microprobe analysis) in reflected light.
Location: Noril'sk, Putoran Mts, Taymyrskiy Autonomous Okrug, Eastern-Siberian Region, Russia. Scale: Picture size 0.1 mm.
© Thomas Witzke / Abraxas-Verlag

Boussingaultite Image

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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

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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
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