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

Namuwite Image

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Namuwite: (Zn,Cu)4(SO4)(OH)6·4(H2O)

Comments: Sky-blue, platy crystals of namuwite on matrix.
Location: Gelbe Birke Mine, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Natrodufrenite Image

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Natrodufrenite: Na(Fe+++,Fe++)(Fe+++,Al)5(PO4)4(OH)6·2(H2O)

Comments: Greenish gray, botryoidal aggregates natrodufrenite on hematite-stained quartz.
Location: Greifenstein Rocks, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Naujakasite Image

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Naujakasite: Na6(Fe++,Mn)Al4Si8O26  
Villiaumite: NaF

Comments: Greenish-gray crystals of naujakasite with red villiaumite.
Location: Narsaq river, Kvanefjeld Mt., Ilímaussaq massif, Greenland. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Nealite Image

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Nealite: Pb4Fe++(As+++++O4)2Cl4

Comments: Orange-yellow prismatic crystals of Nealite on matrix.
Location: Lavrion District slag localities, Attikí (Attica; Attika) Prefecture, Greece. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Nepouite Image

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Nepouite: Ni3Si2O5(OH)4

Comments: Massive, green népouite.
Location: Callenberg North (no. 2) open cut, Callenberg, Glauchau, Saxony, Germany. Scale: Specimen size 4 cm.
© Thomas Witzke / Abraxas-Verlag

Neustadtelite Image

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Neustadtelite: Bi2Fe+++(Fe+++,Co)(O,OH)2(OH)2(AsO4)2

Comments: Small brown crystals of neustadtelite in matrix.
Location: Sauschwart mine, Schneeberg, Erzgebirge, Saxony, Germany. Scale: Picture Size 1.5 mm.
© Thomas Witzke

Nezilovite Image

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Nezilovite: PbZn2(Mn++++,Ti++++)2Fe+++8O19

Comments: Small black grains of nezilovite in matrix.
Location: Nezilovo, FYR Macedonia. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Nickel Image

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Nickel: Ni

Comments: Very small cubic crystal of native Nickel, isolated from an ore concentrate.
Location: Nouméa, New Caledonia. Scale: Crystal size 0.1 mm.
© Thomas Witzke / Abraxas-Verlag

Nickelhexahydrite Image

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Nickelhexahydrite: (Ni,Mg,Fe++)(SO4)·6(H2O)

Comments: Pale greenish crust of ferroan nickelhexahydrite.
Location: Sohland, Bautzen, Oberlausitz, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Nickellotharmeyerite Image

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Nickellotharmeyerite: Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2

Comments: Brown, microcrystalline nickellotharmeyerite.
Location: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Nickelphosphide Image

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Nickelphosphide: (Ni,Fe)3P  
Kamacite: alpha-(Fe,Ni)

Comments: Small inclusion of nickelphosphide in massive kamacite.
Location: Kenton County meteorite, Kenton Co., Kentucky, USA. Scale: Picture size 0.09 mm.
© Thomas Witzke / Abraxas-Verlag

Nickelschneebergite Image

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Nickelschneebergite: Bi(Ni,Co)2(AsO4)2(OH,H2O)2

Comments: Small crystals of nickelschneebergite.
Location: Roter Berg, Neustädtel, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Nickelzippeite Image

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Nickelzippeite: Ni++2(UO2)6(SO4)3(OH)10·16(H2O)

Comments: Yellow crust of nickel-zippeite on matrix.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Nickenichite Image

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Nickenichite: Na0,8Ca0,4(Mg,Fe+++,Al)3Cu0,4(AsO4)3

Comments: Blue crystals of nickenichite on matrix.
Location: Nickenich, near Kruft, Eifel Mts, Rhineland-Palatinate, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Niningerite Image

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Niningerite: (Mg,Fe++,Mn)S

Comments: PPL reflected light polished section showing light gray-brownish grains of troilite (Tr) with white niningerite (Nin) and dark silicates.
Location: Indarch meteorite, Shusha, Elizavetpol, Azerbaidshan. Scale: Picture Size 0.28 mm.
© Thomas Witzke

Niobocarbide Image

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Niobocarbide: (Nb,Ta)C

Comments: Small metallic grain of niobocarbide.
Location: Nizhne-Tagil'skoye (Mednorudyanskoye) Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Urals Region, Russia. Scale: Grain size 0.3 mm.
© Thomas Witzke / Abraxas-Verlag

Nitratine Image

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Nitratine: NaNO3  
Iquiqueite: K3Na4Mg(Cr++++++O4)B24O39(OH)·12(H2O)

Comments: Yellow iquiqueiite in clear, massive nitration.
Location: Salar de Miraje, Antofagasta, Chile. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Nitratine Image

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Nitratine: NaNO3

Comments: Euhedral crystalline aggregate of nitratine.
Location: Taltal, Antofagasta, Chile. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Noelbensonite Image

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Noelbensonite: BaMn+++2(Si2O7)(OH)2·(H2O)

Comments: Brownish, massive noélbensonite.
Location: Woods Mine (Wood's Rhodonite Mine), Tamworth, New South Wales, Australia. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Nordenskioldine Image

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Nordenskioldine: CaSnB2O6  
Magnetite: Fe++Fe+++2O4

Comments: Colorless to white bladed crystals of nordenskiöldine with black magnetite.
Location: Pöhla-Tellerhäuser Gallery, Pöhla, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag
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