Owyheeite

Formula: Ag2Pb7(Sb,Bi)8S20

Origin of name: after locality Owyhee County, Idaho, USA

 

Crystal system: orthorhombic

Crystal class: 2/m 2/m 2/m

Twinning: 

Unit cell: 

 

Colour: lead-gray to silver-white, tarnishes yellowish

Diaphaneity: opaque

Luster: metallic

Habit: crystals acicular, massive, fibrous structure

Hardness: 2.5

Specific gravity: 6.22 to 6.51

Cleavage: 1; {001}

Tenacity: 

Streak: reddish brown

 

Synonyms/varieties:

 

Comments: 

 

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