Nickelschneebergite

nickelschneebergite

schneebergite

bariopharmacosiderite

ferrilotharmeyerite

Images

Formula: BiNi2(AsO4)2(OH).H2O
Hydrated arsenate, tsumcorite group, bismuth- and nickel- bearing mineral
Crystal System: Monoclinic
Specific gravity: 5.23 calculated
Hardness: 4 to 4½
Streak: White to pale brown
Colour: Light brown to greenish brown
Environments

Hydrothermal environments

Localities

At the Pucher Shaft, Wolfgangmaßen mines, Wolfgangmaßen, Neustädtel, Schneeberg, Erzgebirgskreis, Saxony, Germany, schneebergite and nickelschneebergite were discovered on samples from the former mining area; associated minerals are scorodite, bariopharmacosiderite, ferrilotharmeyerite, preisingerite and waylandite. Schneebergite and nickelschneebergite are very similar in appearance; they form crystal aggregates up to 1 mm and small tabular crystals to 0.5 mm. There is a probably complete solid solution involving schneebergite, nickelschneebergite, cobaltlotharmeyerite and nickellotharmeyerite (EJM 14.1.115-126).
Nickelschneebergite from the Pucher Shaft - Image

At the type locality, the Roter Berg mining district, Zschorlau, Erzgebirgskreis, Saxony, Germany, nickelschneebergite occurs as aggregates of tabular to lath-like or acicular micro-crystals to 0.5 mm in length, in quartz casts of decomposed cobalt and nickel arsenides. Associated minerals include schneebergite, quartz, scorodite, bariopharmacosiderite, ferrilotharmeyerite, preisingerite and waylandite (HOM, Mindat).
Nickelschneebergite from Roter Berg - Image

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