Emplectite

Formula:   CuBiS2

Origin of name: From Greek for entwined

 

Crystal system:   Orthorhombic

Crystal class:   2/m 2/m 2/m

Twinning:   Observed in polished section

Unit cell: a = 6.137 Ǻ, b = 14.54 Ǻ, c = 3.898 Ǻ

 

Colour:  Gray to tin-white

Diaphaneity:

Luster:   Metallic

Habit:   Crystals short prismatic, flattened, striated vertically

Hardness:   2

Specific gravity:   6.3 to 6.5

Cleavage:   2; {010} perfect, {001} imperfect

Tenacity:   Conchoidal to uneven; brittle

Streak: 

 

Synonyms/varieties:

 

Comments:

 

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