clinobisvanite

bismutite

pucherite

beyerite

Clinobisvanite

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Formula: Bi(VO4)
Anhydrous normal vanadate, bismuth-bearing mineral, paramorph of dreyerite and pucherite
Crystal System: Monoclinic
Specific gravity: 6.949 calculated
Hardness: Very soft
Streak: Yellow
Colour: Yellow, orange, pale orange, deep reddish orange
Environments

Pegmatites

Clinobisvanite occurs as an accessory mineral in pegmatites, as an oxidation product of other bismuth-bearing minerals (HOM).

At the type locality, the Kempton Brothers Beryl Mine pegmatites, Yinnietharra, Upper Gascoyne Shire, Western Australia, clinobisvanite occurs often intergrown with bismutite and pucherite, and on garnet in beryl-bearing spessartine pegmatites (Dana). Other associated minerals include bismite, bismuth, vanadinite, beyerite, namibite and scheelite (HOM, Mindat).

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