General Information:
Chemical Formula:
AuPb2BiTe2S3
Composition:
(Molecular Weight = 1,171.74 gm)
Bismuth 17.83 % Bi
Tellurium 21.78 % Te
Lead 35.37 % Pb
Gold 16.81 % Au
Sulfur 8.21 % S
Empirical Formula:
AuPb2BiTe2S3
IMA Status:
Approved IMA 1990
Locality:
Buckhorn mine, near Jamestown, Boulder, Colorado, USA.
Name Origin:
Named after the locality.
Physical Properties:
Cleavage:
[???] Perfect
Color:
black.
Diaphaniety:
Opaque
Habits:
Bladed - Aggregates of thin lath-like crystals (e.g. kyanite)., Euhedral Crystals - Occurs as well-formed crystals showing good external form.,
Hardness:
2.5 - Finger Nail
Luster:
Metallic
Streak:
gray
More details...