Varlamoffite

Formula(Sn,Fe)(O,OH)2

Origin of name: after N. Varlamoff

 

Crystal system: Tetragoal

Crystal class: 4/m 2/m 2/m

Twinning: 

Unit cell: a = 4.71, c = 3.13

 

Colour: Yellow, orange red

Diaphaneity: Translucent to opaque

Luster: Waxy

Habit: 

Hardness: 6-6.5

Specific gravity: 2.52-2.61

Cleavage: None

Tenacity: 

Streak: Light yellow

 

Synonyms/varieties: Souxite

 

Comments: 

 

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