Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Powellite from
Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK


Locality type:Mine
Classification
Species:Powellite
Formula:Ca(MoO4)
Comments:The first British occurrence (Hartley, 1984).
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Powellite data
Locality Data:Click here to view Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:8816
Long-form Identifier:1:3:8816:9
GUID (UUID V4):0
References
Hartley, J. (1984) A list of minerals associated with the ore deposits of the Caldbeck Fells, Cumbria. Transactions of the Leeds Geological Association, 10 (3) 22-39
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
Day, Harry (1999) BMS Database, British Micromount Society.
 
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