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Arsenate

Nickelaustinite

CaNi(AsO₄)(OH)
Hardness4
Crystal systemOrthorhombic
ClassArsenate
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Nickelaustinite specimen

Green nickelaustinite with roselite. Field of view 3.5 cm. From: Aït Ahmane, Bou Azzer District, Tazenakht, Ouarzazate Province, Drâa-Tafilalet Region, Morocco. — Photo: Leon Hupperichs · CC BY-SA 3.0

Nickelaustinite

Nickelaustinite is an IMA-recognized mineral species in the arsenate class, with the chemical formula CaNi(AsO₄)(OH).

It crystallizes in the orthorhombic crystal system (space group P2_12_12_1). It is a member of the Adelite structural group.

Key properties: Mohs hardness 4; specific gravity 4.27; White streak; Silky to subadamantine luster; optically biaxial.

IMA symbol Naus, IMA status: approved, named in 1985.

On dolomite.

It is found associated with Roselite, calcite, dolomite, chalcopyrite, skutterudite.

The name refers to the predominance of nickel in the composition and relation to austinite.

Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet. Browse more N minerals or help write this entry.