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Vanadate

Namibite

Cu(BiO)₂(VO₄)(OH)
Hardness4.5–5
Crystal systemTriclinic
ClassVanadate
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Namibite specimen

Namibite Locality: Hechtsberg quarry, Hausach, Black Forest, Baden-Württemberg, Germany Dark green Namibite balls together with small tetrahedral crystals of Eulytine on Chrysocolla. Field of view 4 mm. Specimen and photo Leon Hupperichs. — Photo: Leon Hupperichs · CC BY-SA 3.0

Namibite

Namibite is an IMA-recognized mineral species in the vanadate class, with the chemical formula Cu(BiO)₂(VO₄)(OH).

It crystallizes in the triclinic crystal system (space group P-1).

Key properties: Mohs hardness 4.5–5; specific gravity 6.86; Pistachio-green streak; optically biaxial.

IMA symbol Nmb, IMA status: approved, named in 1981.

Found as a secondary mineral in bismuth-bearing hydrothermal polymetallic mineral deposits and granite pegmatites.

It is found associated with Bismuth, bismutite, wittichenite, bismite, bismutostibiconite, bismutoferrite, clinobisvanite, pucherite, beyerite, schumacherite, mixite, eulytite, chrysocolla.

The name refers to the Namib Desert, along the coast of Namibia.

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.