Horsfordite

Formula:  Cu5Sb

Origin of name:   For Eben Horsford, American chemist

 

Crystal system:   Cubic

Crystal class:  Unknown

Twinning: 

Unit cell: 

 

Colour:  Silver-white, tarnishes rapidly

Diaphaneity:  Opaque

Luster:  Metallic, brilliant

Habit:  Massive

Hardness:  4 to 5

Specific gravity:  8.81

Cleavage:  None

Tenacity: 

Streak: 

 

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