Antimonselite

Formula:  Sb₂Se₃

Origin of name:  From antimony and selenium

Crystal system:  Orthorhombic

Crystal class:  2/m 2/m 2/m

Twinning:

Unit cell: a = 11.213 Å, b = 11.515 Å, c = 3.991 Å

Colour:  Black

Diaphaneity: Opaque

Luster:  Metallic

Habit:  Radiating acicular and anhedral grains <23 μm

Hardness:  2.5

Specific gravity:  5.88

Cleavage:  None

Tenacity:

Streak:  Black

Synonyms/varieties:

Comments: