Sulvanite

Formula: Cu3VS4

Origin of name: from composition

 

Crystal system: cubic

Crystal class: -43m

Twinning: 

Unit cell: 

 

Colour: bronze-gold

Diaphaneity: opaque

Luster: metallic, tarnishes dull

Habit: crystals cubic, to 2.5 cm, massive

Hardness: 3.5

Specific gravity: 3.86

Cleavage: 1; {001} perfect

Tenacity: 

Streak: black

 

Synonyms/varieties:

 

Comments: series with arsenosulvanite

 

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