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

Gravegliaite Image

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Gravegliaite: Mn++(SO3)·3(H2O)

Comments: Pale brownish prismatic crystals of gravegliaite on matrix.
Location: Gambatesa Mine, Val Graveglia, Genova, Liguria, Italy. Scale: Picture Size 1 mm.
© Thomas Witzke

Greifensteinite Image

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Greifensteinite: Ca2Be4(Fe++,Mn)5(PO4)6(OH)4·6(H2O)

Comments: Tabular crystal of greifensteinite impaled on acicular tourmaline.
Location: Greifenstein Rocks, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Griceite Image

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Griceite: LiF  
Villiaumite: NaF

Comments: White aggregates of griceite with pinkish villiaumite.
Location: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry), Mt Saint-Hilaire, Rouville Co., Québec, Canada. Scale: Picture size 3.5 mm.
© Thomas Witzke / Abraxas-Verlag

Grimselite Image

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Grimselite: K3Na(UO2)(CO3)3·(H2O)

Comments: Small yellow crystals of grimselite in matrix.
Location: Gerstenegg/Sommerloch tunnel, Grimsel Region, Hasli Valley, Bern, Switzerland. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Grumiplucite Image

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Grumiplucite: HgBi2S4

Comments: Gray crystals of grumiplucite on quartz.
Location: Levigliani, Apuan Alps, Lucca Province, Tuscany, Italy. Scale: Picture size 1.2 mm.
© Thomas Witzke / Abraxas-Verlag

Hagendorfite Image

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Hagendorfite: NaCaMn(Fe++,Fe+++,Mg)2(PO4)3

Comments: Greenish-black massive hagendorfite.
Location: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Waidhaus, Vohenstrauß, Oberpfalz, Bavaria, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Halotrichite Image

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Halotrichite: Fe++Al2(SO4)4·22(H2O)

Comments: White, fibrous halotrichite on rock.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 4.5 cm.
© Thomas Witzke / Abraxas-Verlag

Hammarite Image

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Hammarite: Pb2Cu2Bi4S9 (?)

Comments: Metallic, white to gray hammarite with native bismuth in fluorite and quartz.
Location: Sadisdorf, Schmiedeberg, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Hauerite Image

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Hauerite: MnS2  
Rambergite: MnS

Comments: Small black octahedral crystals of hauerite with small brown crystals of rambergite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Hausmannite Image

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Hausmannite: Mn++Mn+++2O4  
Kombatite: Pb14(VO4)2O9Cl4

Comments: Yellow kombatite crystals in black hausmannite.
Location: Kombat Mine, Otavi, Namibia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Hechtsbergite Image

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Hechtsbergite: Bi2O(OH)(VO4)

Comments: Light brownish crystals of hechtsbergite in matrix.
Location: Hechtsberg Quarry, Hausach, Kinzig Valley, Black Forest, Baden-Württemberg, Germany. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Hectorfloresite Image

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Hectorfloresite: Na9(IO3)(SO4)4

Comments: Prismatic twinned crystal of hectorfloresite.
Location: Pampa Rica, Antofagasta, Chile. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Heidornite Image

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Heidornite: Na2Ca3B5O8(SO4)2Cl(OH)2

Comments: Colorless crystals of heidornite.
Location: Niedersachswerfen, Nordhausen, Erfurt district, Harz Mts, Thuringia, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Hellyerite Image

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Hellyerite: NiCO3·6(H2O)

Comments: Green botryoidal hellyerite on matrix.
Location: Lord Brassey Mine, Heazlewood, Tasmania, Australia. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Henrymeyerite Image

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

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

Heulandite-Sr Image

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Heulandite-Sr: (Sr,Na,Ca)2-3Al3(Al,Si)2Si13O36·12(H2O)

Comments: Colorless prismatic-pinacoidal crystal of heulandite-Sr.
Location: Campegli mine, Sestri Levante, Genova province, Liguria, Italy. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Hexaferrum Image

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Hexaferrum: (Fe,Os,Ru,Ir)

Comments: Polished section showing a white euhedral crystal of hexaferrum in gray chromite.
Location: Pole Corral Pass, Rattlesnake Creek Terrane, Beegum, California, USA. Scale: Picture size 14 mm.
© Thomas Witzke

Hexahydroborite Image

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Hexahydroborite: Ca[B(OH)4]2·2(H2O)

Comments: White to translucent hexahydroborite.
Location: Solongo B deposit, Vitim Plateau, Buriatia (Buryatia) Republic, Transbaikalia (Zabaykalye), Eastern-Siberian Region, Russia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Heyrovskyite Image

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Heyrovskyite: Pb10AgBi5S18

Comments: Metallic, gray heyrovskyite in quartz.
Location: Hûrky u Cistá, Velká Chmelistná (Großmeleschen), Rakovnik, Stredoceský Kraj, Bohemia, Czech Republic. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Hidalgoite Image

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Hidalgoite: PbAl3(AsO4)(SO4)(OH)6

Comments: White to light gray crystalline druze of hidalgoite.
Location: Sauberg Mine, Ehrenfriedersdorf, Erzgebirge, Saxony, Germany. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag
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