Tellurantimony

Formula: Sb2Te3

Origin of name: from composition

 

Crystal system: Hexagonal

Crystal class: 3 2/m

Twinning: perpendicular to the elongation axis, observed in polished section

Unit cell: a = 4.258, c = 30.516

 

Colour: Silver white

Diaphaneity: Opaque

Luster: Metallic

Habit: Crystals lath-like, to 350 micron, twinned perpendicular to the elongation axis

Hardness: 2

Specific gravity: 6.511

Cleavage: 1; perfect

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: series with tellurobismuthite

 

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