General Information:
Chemical Formula:
Cu5Sb
Composition:
(Molecular Weight = 503.03 gm)
Copper 75.80 % Cu
Antimony 24.20 % Sb
Empirical Formula:
Cu6Sb
Locality:
Mytilene, Lesbos Island, Greece.
Name Origin:
Named for Eben N. Horsford, (1818-1893), U.S. chemist.
Physical Properties:
Cleavage:
None
Color:
gray or silver white.
Density:
8.8
Diaphaniety:
Opaque
Habits:
Massive - Uniformly indistinguishable crystals forming large masses., Tarnishes - Freshly fractured surfaces form a surface oxidation film,
Hardness:
4-5 - Fluorite-Apatite
Luster:
Metallic
Streak:
silver white
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