Sabatierite

Formula: TlCu₆Se₄

Origin of name: Named for Germain Sabatier (1923-), French mineralogist

Crystal system: Tetragonal

Crystal class: 4/m 2/m 2/m

Twinning:

Unit cell: a = 3.997, c = 9.841

Colour: light bluish gray in reflected light

Diaphaneity: Opaque

Luster: Metallic

Habit: Radiating aggregates, microscopic crystals

Hardness: 2.5

Specific gravity: 6.78

Cleavage: None

Tenacity: 

Streak: 

Synonyms/varieties:

Comments: known in polished section only