General Information:
Chemical Formula:(Pb,Mo,[ ])8O8Cl2
Composition:(Molecular Weight = 1,633.98 gm)Molybdenum 11.74 %
MoLead 76.08 %
PbChlorine 4.34 %
ClOxygen 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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