Zavaritskite

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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