Clerite

Formula:  MnSb₂S₄

Origin of name:  For Onisim Y. Kler, Russian amateur mineralogist

Crystal system:  Orthorhombic

Crystal class:  2/m 2/m 2/m

Twinning:

Unit cell:

Colour:  Light grey with pink-yellow tint in reflected light

Diaphaneity:

Luster:

Habit:  Irregular equant grains to 0.01-0.2 mm

Hardness:  3

Specific gravity:

Cleavage:

Tenacity:

Streak:

Synonyms/varieties:

Comments:  From polished section