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
Little Mine Crag, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK


Classification
Species:Arsenopyrite
Formula:FeAsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view Little Mine Crag, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:14653
Long-form Identifier:1:3:14653:3
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
0.8km (0.5 miles) ⓘGoldscope Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
0.9km (0.6 miles) ⓘYewthwaite Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
1.1km (0.7 miles) ⓘBlack Crag, Above Derwent, Allerdale, Cumbria, England, UK
1.8km (1.1 miles) ⓘManesty Vein, Grange, Borrowdale, Allerdale, Cumbria, England, UK
2.0km (1.3 miles) ⓘCopper Plate Mine, Borrowdale, Allerdale, Cumbria, England, UK
2.2km (1.4 miles) ⓘCastle Nook Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
2.7km (1.7 miles) ⓘDale Head Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
3.1km (1.9 miles) ⓘCobalt Mine, Scar Crag, Causey Pike, Above Derwent, Allerdale, Cumbria, England, UK
3.2km (2.0 miles) ⓘScar Crags, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
3.9km (2.4 miles) ⓘDale Head North, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
and/or  
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