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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Arsenopyrite from
Bank Wood Quarry, Bassenthwaite, Allerdale, Cumbria, England, UK


Locality type:Quarry
Classification
Species:Arsenopyrite
Formula:FeAsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view Bank Wood Quarry, Bassenthwaite, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:14627
Long-form Identifier:1:3:14627:8
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
5.0km (3.1 miles) ⓘEmbleton Quarry, Embleton, Allerdale, Cumbria, England, UK
9.2km (5.7 miles) ⓘWet Swine Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK
9.5km (5.9 miles) ⓘIngray Gill, Caldbeck, Allerdale, Cumbria, England, UK
9.7km (6.0 miles) ⓘShort Grain, Deer Hills, Caldbeck, Allerdale, Cumbria, England, UK
9.8km (6.1 miles) ⓘSmith vein, Carrock Mine, Mungrisdale, Eden, Cumbria, England, UK
9.9km (6.1 miles) ⓘDeer Hills, Caldbeck, Allerdale, Cumbria, England, UK
10.0km (6.2 miles) ⓘDeer Hills Baryte Mine, Deer Hills, Caldbeck, Allerdale, Cumbria, England, UK
10.1km (6.3 miles) ⓘBrandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK
10.1km (6.3 miles) ⓘCarrock Mine, Mungrisdale, Eden, Cumbria, England, UK
10.2km (6.3 miles) ⓘGrains Gill, Mungrisdale, Eden, Cumbria, England, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
and/or  
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