Thomas Witzke's Image Gallery

Krausite: KFe+++(SO4)2·(H2O)

Comments: Pale yellowish crystals of krausite on black matrix.
Location: Willi Agatz Mine, Dresden, Saxony, Germany. Scale: Picture size 1.7 mm.
© Thomas Witzke / Abraxas-Verlag

Kremersite: (NH4,K)2Fe+++Cl5·(H2O)

Comments: Orange crystals of kremersite.
Location: Anna Mine, Alsdorf, Aachen, North Rhine-Westphalia, Germany. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Krettnichite: PbMn+++2(VO4)2(OH)2

Comments: Dark brown to nearly black crystals of krettnichite.
Location: Johann Shaft; Jakob Tunnel (Dump), Krettnich, Wadern, Saarland, Germany. Scale: Picture size 3.5 mm.
© Thomas Witzke / Abraxas-Verlag

Krutaite: CuSe2

Comments: Dark gray, metallic, octahedral crystals of krutaite on matrix.
Location: El Dragón mine, Quijarro province, Potosí, Bolivia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Kryzhanovskite: MnFe+++2(PO4)2(OH)2·(H2O)

Comments: Brown crystals of kryzhanovskite.
Location: Hagendorf South Pegmatite (Cornelia Mine; Hagendorf South Open Cut), Waidhaus, Vohenstrauß, Oberpfalz, Bavaria, Germany. Scale: Picture size 6 mm.
© Thomas Witzke / Abraxas-Verlag

Ktenasite: (Cu,Zn)5(SO4)2(OH)6·6(H2O)

Comments: Turquoise blue ktenasite on matrix.
Location: Gelbe Birke Mine, Schwarzenberg District, Erzgebirge, Saxony, Germany. Scale: Picture size 0.9 mm.
© Thomas Witzke / Abraxas-Verlag

Kukharenkoite-(Ce): Ba2Ce(CO3)3F

Comments: White-tan crystals of kukharenkoite-(Ce).
Location: Kirovskii (Kirovsky) apatite mine, Mt Kukisvumchorr, Khibiny Massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Kuranakhite: PbMn++++Te++++++O6

Comments: Reddish-brown kuranakhite on matrix.
Location: Moctezuma, Mun. de Moctezuma, Sonora, Mexico. Scale: Picture size 5 mm.
© Thomas Witzke / Abraxas-Verlag

Kusachiite: CuBi2O4

Comments: Black kusachiite with blue henmilite.
Location: Fuka, Bicchu-cho, Okayama Prefecture, Japan. Scale: Picture Size 0.5 mm.
© Thomas Witzke

Kyzylkumite: V+++2Ti3O9

Comments: A small crystal of kyzylkumite with a triangular face.
Location: Koscheka U Deposit, Auminzatau Mtns., Central Kyzylkum Region, Kyzylkum Desert, Uzbekistan. Scale: Picture size 1 mm.
© Thomas Witzke / Abraxas-Verlag

Laffittite: AgHgAsS3

Comments: A short-prismatic, dark brown crystal of laffittite with red realgar and yellow orpiment.
Location: Getchell Mine, Adam Peak, Humboldt Co., Nevada, USA. Scale: Picture size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Laphamite: As2(Se,S)3

Comments: Brown grain of laphamite.
Location: Northumberland County, Pennsylvania, USA. Scale: Grain size 1.5 mm.
© Thomas Witzke / Abraxas-Verlag

Larderellite: (NH4)B5O6(OH)4

Comments: Colorless larderellite crystals.
Location: Larderello, Cecina Valley, Pisa province, Tuscany, Italy. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Laurite: RuS2  
Hollingworthite: (Rh,Pt,Pd)AsS

Comments: Gray grain of hollingworthite (in the center of the picture) with very slightly darker gray laurite (at the right margin). Polished section (from microprobe analysis).
Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 0.1 mm.
© Thomas Witzke / Abraxas-Verlag

Laurite: RuS2  
Kashinite: (Ir,Rh)2S3

Comments: Gray kashinite with darker gray laurite. Polished section (from microprobe analysis) in reflected light.
Location: Nizhne-Tagil'skoye (Mednorudyanskoye) Cu Deposit, Nizhnii Tagil, Sverdlovskaya Oblast', Urals Region, Russia. Scale: Picture size 0.2 mm.
© Thomas Witzke / Abraxas-Verlag

Laurite: RuS2  
Hollingworthite: (Rh,Pt,Pd)AsS

Comments: Gray laurite with two smaller grains of hollingworthite (left and right from the laurite, very slightly lighter gray). Polished section (from microprobe analysis) in reflected light.
Location: Konder Mine, Konder alkaline-ultrabasic massif, Aldan shield, Saha (Sakha) Republic (Yakutia), Eastern-Siberian Region, Russia. Scale: Picture size 0.15 mm.
© Thomas Witzke / Abraxas-Verlag

Lautite: CuAsS

Comments: Metallic dark gray Lautite aggregate.
Location: Rudolph Shaft, Lauta, Marienberg District, Erzgebirge, Saxony, Germany. Scale: Specimen size 3 cm.
© Thomas Witzke / Abraxas-Verlag

Lazarenkoite: CaFe++As+++3O7·3(H2O)

Comments: Orange, fibrous lazarenkoite in a vug.
Location: Khovu-Asky Ni-Co Deposit, Tuva Republic, Eastern-Siberian Region, Russia. Scale: Picture size 2 mm.
© Thomas Witzke / Abraxas-Verlag

Lazulite: MgAl2(PO4)2(OH)2  
Bystrite: (Na,K)7Ca(Si6Al6)O24S4.5·(H2O)

Comments: Brownish-yellow bystrite grains with blue lazulite in an igneous rock.
Location: Malo-Bystrinskoye lazurite deposit, Tunka Valley, Sludyanka, Lake Baikal Region, Russia. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Leisingite: Cu(Mg,Cu,Fe,Zn)2Te++++++O6·6(H2O)

Comments: Very small yellow crystal of Leisingite on quartz.
Location: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA. Scale: Picture size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag