Pinalite
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Pinalite
Pinalite is a rare lead tungstatechloride mineral with formula: Pb3WO5Cl2.

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Pinalite

General Information:
 Chemical Formula:
Pb3(WO4)OCl2
 Composition:
(Molecular Weight = 956.35 gm)
Lead 65.00 % Pb
Tungsten 19.22 % 
Chlorine 7.41 % Cl
Oxygen 8.36 % 
 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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