General Information:
Chemical Formula:Pb3(WO4)OCl2
Composition:(Molecular Weight = 956.35 gm)Lead 65.00 %
PbTungsten 19.22 %
W Chlorine 7.41 %
ClOxygen 8.36 %
O Empirical Formula: Pb3(WO4)OCl2
Environment:In solution cavites in quartz.
IMA Status:Approved IMA
Locality:Mammoth mine, Pinal County, Arizona, USA.
Name Origin:Named for the locality.
Physical Properties: Cleavage:None
Color:yellow, orangish, or golden yellow.
Diaphaniety:Transparent
Habits:Acicular - Occurs as needle-like crystals., Bladed - Aggregates of thin lath-like crystals (e.g. kyanite)., Microscopic Crystals - Crystals visible only with microscopes.
Luminescence:Non-fluorescent.
Luster:Adamantine
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