Formula: BiOF
Origin of name: for A. Zavaritskii, Russian petrographer
Crystal system: Tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell: a = 3.747, c = 6.226
Colour: Gray
Diaphaneity: Translucent in thin layers, subtranslucent to opaque
Luster: Semi-metallic to greasy
Habit: Massive, fine-grained
Hardness: 2 to 2.5
Specific gravity: 8.34 to 9
Cleavage:
Tenacity:
Streak: Gray white
Synonyms/varieties:
Comments:
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