Aschamalmite

General Information:
 Chemical Formula:
Pb6Bi2S9
 Composition:
(Molecular Weight = 1,949.75 gm)
Bismuth 21.44 % Bi
Lead 63.76 % Pb
Sulfur 14.80 % S 
 Empirical Formula:
Pb6Bi2S9
 Locality:
Ascham Alm, Untersulzbachtal, Austria.
 Name Origin:
Named for the locality.
Physical Properties:
 Cleavage:
[001] Perfect
 Color:
lead gray or gray.
 Density:
7.27
 Diaphaniety:
Opaque
 Habits:
Massive - Uniformly indistinguishable crystals forming large masses., Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape.,
 Hardness:
3.5 - Copper Penny
 Luminescence:
Non-fluorescent.
 Luster:
Metallic
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