Namibite

namibite

bismutoferrite

bismuth

pucherite

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Formula: Cu(BiO)2(VO4)(OH)
Anhydrous normal vanadate, bismuth-bearing mineral
Crystal System: Triclinic
Specific gravity: 6.86 measured, 6.91 calculated
Hardness: 4½ to 5
Streak: Pistachio green
Colour: Dark green
Solubility: Easily soluble in cold dilute acids
Environments:

Pegmatites
Hydrothermal environments

Namibite is a secondary mineral in bismuth-bearing hydrothermal polymetallic mineral deposits and granite pegmatites, associated with bismuth, bismutite, wittichenite, bismite, bismutostibiconite, bismutoferrite, clinobisvanite, pucherite, beyerite, schumacherite, mixite, eulytine and chrysocolla (HOM).

At the type locality, a copper mine near Khorixas, northwestern Namibia, namibite occurs in cavities in drusy quartz veins associated with beyerite, native bismuth, bismite, bismutite and oxidised copper minerals (Dana, AM67.857)

At the White Queen Mine, Hiriart Mountain, Pala, Pala Mining District, San Diego county, California, USA, fine-grained emerald-green namibite has been found intergrown with fine-grained, tan clinobisvanite in a quartz-rich "pocket-pegmatite" together with beyerite (MM 60.2.387–388).

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