Formula: BiVO4
Origin of name: after locality Pucher shaft, Wolfgang mine, Schneeberg, Saxony
Crystal system: orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell: a = 5.332 Å, b = 5.660 Å, c = 12.02 Å
Colour: yellowish brown and reddish brown to dark brown
Diaphaneity:
Luster: vitreous to adamantine
Habit: crystals tabular or acicular, small, faces often curved, massive, ocherous
Hardness: 4
Specific gravity: 6.25
Cleavage: 1; {001} perfect
Tenacity: conchoidal, brittle
Streak: yellow
Synonyms/varieties:
Comments: trimorphous with clinobisvanite and dreyerite
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