Thomas Witzke's Image Gallery

Erlichmanite: OsS2

Comments: Large gray fractured grain of erlichmanite. Polished section in reflected light.
Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 0.25 mm.
© Thomas Witzke / Abraxas-Verlag

Ernienickelite: NiMn++++3O7·3(H2O)

Comments: Very small reddish-black tabular crystals of ernienickelite on quartz.
Location: Siberia complex, Western Australia, Australia. Scale: Picture size 0.7 mm.
© Thomas Witzke / Abraxas-Verlag

Erythrite: Co3(AsO4)2·8(H2O)  
Cobaltkoritnigite: (Co,Zn)(AsO3OH)·(H2O)

Comments: Dark purplish cobaltkoritnigite with pink erythrite.
Location: Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Erythrosiderite: K2Fe+++Cl5·(H2O)  
Salammoniac: NH4Cl

Comments: Orange-brown aggregates of erythrosiderite with sal ammoniac. Material from the 1926 eruption of the Erythrosiderite is hygroscopic and must be stored in a closed vial. The photo was made through the vial.
Location: Vesuvius, Naples Province, Campania, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Eugenite: Ag9Hg2

Comments: Metallic, silvery eugenite.
Location: Copiapó, Atacama, Chile. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Evenkite: (CH3)2(CH2)22

Comments: Colorless flake of evenkite on an orange background.
Location: Khavokiperskiye Rocks polymetallic occurrence, Evenkia, Nizhnyaya Tunguska River, Nizhnyaya Tunguska River Basin, Krasnoyarskiy Kray, Eastern-Siberian Region, Russia. Scale: Size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Eztlite: Pb2Fe+++6(Te++++O3)3(Te++++++O6)(OH)10·8(H2O)

Comments: Reddish-brown crystalline eztlite on matrix.
Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Fairbankite: PbTe++++O3  
Jarosite: KFe+++3(SO4)2(OH)6

Comments: Colorless to white crystals of fairbankite with orangish brown jarosite.
Location: Tombstone, Tombstone District, Cochise Co., Arizona, USA. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Fangite: Tl3AsS4  
Lorandite: TlAsS2

Comments: Brown crystals of fangite with red lorandite.
Location: Allchar, Roszdan, FYR Macedonia. Scale: Picture size 1.3 mm.
© Thomas Witzke / Abraxas-Verlag

Fedotovite: K2Cu++3(SO4)3O  
Dolerophanite: Cu2(SO4)O  
Chalcanthite: CuSO4·5(H2O)

Comments: Brown crystals of dolerophanite with blue chalcanthite and green fedotovite.
Location: Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 3 mm.
© Thomas Witzke / Abraxas-Verlag

Fedotovite: K2Cu++3(SO4)3O  
Chalcanthite: CuSO4·5(H2O)

Comments: Green fedotovite with pale blue chalcanthite.
Location: Great Fissure (Main Fracture) eruption, Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Feklichevite: Na11Ca9(Fe+++,Fe++)2Zr3Nb[Si25O73](OH,H2O,Cl,O)5

Comments: Brownish to purplish-brownish crystal of feklichevite.
Location: Kovdor Mine, Kovdor massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrihydrite: Fe+++2O3·0.5(H2O)

Comments: Brown ferrihydrite.
Location: Fischersdorf, near Saalfeld, Thuringia, Germany. Scale: Picture size 6 mm.
© Thomas Witzke

Ferrilotharmeyerite: Ca(Zn,Cu++)(Fe+++,Zn)(AsO4)2(OH,H2O)2

Comments: Brown crystalline aggregates of ferrilotharmeyerite on quartz.
Location: Pucher Shaft, Schneeberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrimolybdite: Fe+++2(MoO4)3·8(H2O)

Comments: Greenish-yellow crystalline aggregates of ferrimolybdite on a gossanous matrix.
Location: Quarry No 2, Königshain, Oberlausitz, Saxony, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrinatrite: Na3Fe+++(SO4)3·3(H2O)

Comments: White spherical aggregates of ferrinatrite with gypsum needles.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Ferritungstite: (K,Ca,Na)(W++++++,Fe+++)2(O,OH)6·(H2O)

Comments: Small, yellow crystals of ferritungstite on matrix.
Location: Clara Mine, Oberwolfach, Wolfach Valley, Black Forest, Baden-Württemberg, Germany. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrohexahydrite: Fe++SO4·6(H2O)

Comments: White to light brownish crust of ferrohexahydrite on matrix.
Location: Sohland, Bautzen, Oberlausitz, Saxony, Germany. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Ferronigerite-6N6S: (Fe++,Zn)4Sn2(Al,Fe+++)15O30(OH)2

Comments: Brownish ferronigerite-6N6S in matrix.
Location: Rosendal tantalum deposit, Rosendal pegmatite, Kemiö (Kimito) Island, Lansi-Suomen Laani, Finland. Scale: Picture Size 3.5 mm.
© Thomas Witzke / Abraxas-Verlag

Ferrostrunzite: Fe++Fe+++2(PO4)2(OH)2·6(H2O)

Comments: Yellowish acicular crystals of ferrostrunzite.
Location: Gravel Hill mine, Perranzabuloe, Cornwall, England, UK. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag