Yuanjiangite

General Information:
 Chemical Formula:
AuSn
 Composition:
(Molecular Weight = 315.68 gm)
Tin 37.60 % Sn
Gold 62.40 % Au
 Empirical Formula:
AuSn
 Environment:
Placer deposit.
 IMA Status:
Approved IMA
 Locality:
In sandy gravel in the middle course of the Yuanjiang River, near the town of Yuanlin, Hunan Province, Peoples Republic of China.
 Name Origin:
Named after its locality.
Physical Properties:
 Cleavage:
None
 Color:
silver white.
 Density:
11.7 - 11.9, Average = 11.8
 Diaphaniety:
Opaque
 Habits:
Cryptocrystalline - Occurs as crystals too small to distinguish with the naked eye., ,
 Hardness:
3.5-4 - Copper Penny-Flourite
 Luminescence:
Non-fluorescent.
 Luster:
Metallic
 Streak:
black
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