Parkinsonite

General Information:
 Chemical Formula:
(Pb,Mo,[ ])8O8Cl2
 Composition:
(Molecular Weight = 1,633.98 gm)
Molybdenum 11.74 % Mo
Lead 76.08 % Pb
Chlorine 4.34 % Cl
Oxygen 7.83 % O 
 Empirical Formula:
Pb6Mo2O8Cl2
 Environment:
In fractures and vugs in carbonates associated with Fe, Mn oxides.
 IMA Status:
Approved IMA
 Locality:
Merehead Quarry, Cranmore, Somerset, England.
 Name Origin:
Named after Reginald F. D. Parkinson, English mineral collector from Somerset.
Physical Properties:
 Cleavage:
[001] Perfect, [100] Good
 Color:
carmine red or purple red.
 Density:
7.32
 Diaphaniety:
Translucent
 Habits:
Platy - Sheet forms (e.g. micas)., ,
 Hardness:
2-2.5 - Gypsum-Finger Nail
 Luminescence:
Non-fluorescent.
 Luster:
Adamantine
 Streak:
dark red
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