General Information:
Chemical Formula:
Pb22Cu4(Bi,Sb)30S69
Locality:
Hvena, Sweden; Ouray, Colorado, USA.
Physical Properties:
Cleavage:
[010] Distinct
Color:
lead gray or steel gray.
Density:
6.3
Diaphaniety:
Opaque
Habits:
Fibrous - Crystals made up of fibers., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Massive - Granular - Common texture observed in granite and other igneous rock.
Hardness:
2.5-3 - Finger Nail-Calcite
Luminescence:
Non-fluorescent.
Luster:
Metallic
Streak:
black
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