Formula: Bi2O3
Origin of name: From composition
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell: a = 5.85 Ǻ, b = 8.17 Ǻ, c = 7.51 Ǻ, β = 113.0°
Colour: Yellowish, greenish yellow, grayish green
Diaphaneity: Translucent
Luster: Subadamantine to dull
Habit: Massive, compact, fine-grained, earthy
Hardness: 4.5
Specific gravity: 8.64 to 9.1
Cleavage: None
Tenacity:
Streak: Yellow to grayish
Synonyms/varieties:
Comments:
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