Calaverite

n. type of gold ore, gold ore that contains a bit of silver

Calaverite, or gold telluride, is an uncommon telluride of gold; it is a metallic mineral. It was first discovered in Calaveras County, California in 1861. Its chemical formula is AuTe2. Its color may range from a silvery white to a brassy yellow. It is closely related to the gold - silver telluride sylvanite. Another mineral containing AuTe2 is krennerite.
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(n.)
A bronze-yellow massive mineral with metallic luster; a telluride of gold; -- first found in Calaveras County California.
  

General Information:
 Chemical Formula:
AuTe2
 Composition:
(Molecular Weight = 452.17 gm)
Tellurium 56.44 % Te
Gold 43.56 % Au
 Empirical Formula:
AuTe2
 Locality:
Staislaus mine, Carson Hill, Calaveras Co. California.
 Name Origin:
Named after its locality.
Physical Properties:
 Cleavage:
None
 Color:
yellow or yellowish white.
 Density:
9.04
 Diaphaniety:
Opaque
 Habits:
Striated - Parallel lines on crystal surface or cleavage face., Massive - Uniformly indistinguishable crystals forming large masses., Crystalline - Fine - Occurs as well-formed fine s ized crystals.
 Hardness:
2.5 - Finger Nail
 Luminescence:
Non-fluorescent.
 Luster:
Metallic
 Streak:
green
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