Maucherite

minerals

nickeline

rammelsbergite

millerite

Images
Formula: Ni11As8
Arsenide
Specific gravity: 7.83
Hardness: 5
Streak: Dark grey
Colour: reddish silver-white, turning darker reddish grey on exposure to air
Common impurities: Co,Fe,Cu,Sb,S
Environments

Hydrothermal environments

Maucherite occurs in nickel-cobalt arsenide hydrothermal veins with other nickel arsenides and sulphides (Dana).

Localities

At the Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada, maucherite is associated with nickeline, rammelsbergite and pararammelsbergite in nickel-cobalt-silver deposits (AM 58.203-210).

At the Orford nickel mine, St-Denis-de-Brompton, Le Val-Saint-François RCM, Estrie, Quebec, Canada, maucherite is associated with millerite, uvarovite, pyroxene and calcite (HOM).

At the type locality, Eisleben, Mansfeld Basin, Saxony-Anhalt, Germany, maucherite is associated with nickeline, rammelsbergite, pararammelsbergite, nickeline, nickelskutterudite and chalcopyrite in nickel-cobalt-silver deposits (AM 58.203-210, HOM).

At the Bou Azzer mining district, Drâa-Tafilalet Region, Morocco, sometimes tiny crystals of maucherite appear on masses of nickeline (Minrec 38.5.384).

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