General Information:
Chemical Formula:PbCu2Bi4(Se,S)8
Composition:(Molecular Weight = 1,731.55 gm)Copper 7.34 %
CuBismuth 48.28 %
BiLead 11.97 %
PbSelenium 29.64 %
SeSulfur 2.78 %
S Empirical Formula: PbCu2Bi4Se6.5S1.5
IMA Status:Approved IMA
Locality:Otish Mountains uranium deposit, PQ, Canada.
Name Origin:Named for David H. Watkinson (1937-), Canadian mineralogist.
Physical Properties: Cleavage:None
Color:black.
Diaphaniety:Opaque
Habits:Anhedral Grains - Granular minerals without the expression of crystal shapes, ,
Hardness:3.5 - Copper Penny
Luster:Metallic
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