Formula: PbMoO4
Origin of name: for F. Wülfen, Austrian mineralogist
Crystal system: tetragonal
Crystal class: 4/m
Twinning: common about [001] axis
Unit cell: a = 5.435 Å, c = 12.11 Å
Colour: yellow to orange, orange-brown to brown, yellowish gray
Diaphaneity:
Luster: resinous to adamantine
Habit: crystals square tabular, often thin, or octahedral, prismatic or cuboidal, massive, coarse to fine granular
Hardness: 2.75 to 3
Specific gravity: 6.5 to 7.0
Cleavage: 3; {011} distinct, {001} and {013} indistinct
Tenacity: subconchoidal to uneven, brittle
Streak: white
Synonyms/varieties:
Comments:
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