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
Seathwaite Mine, Dunnerdale-with-Seathwaite, South Lakeland, Cumbria, England, UK


Locality type:Mine
Classification
Species:Arsenopyrite
Formula:FeAsS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Arsenopyrite data
Locality Data:Click here to view Seathwaite Mine, Dunnerdale-with-Seathwaite, South Lakeland, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:14664
Long-form Identifier:1:3:14664:9
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
2.0km (1.2 miles) ⓘPaddy End Mine, Coniston, South Lakeland, Cumbria, England, UK
2.2km (1.4 miles) ⓘConiston Copper Mines, Coniston, South Lakeland, Cumbria, England, UK
2.5km (1.6 miles) ⓘBonser Mine, Coniston, South Lakeland, Cumbria, England, UK
3.3km (2.1 miles) ⓘBirk Fell Mine, Coniston, South Lakeland, Cumbria, England, UK
3.4km (2.1 miles) ⓘTilberthwaite Mine, Coniston, South Lakeland, Cumbria, England, UK
3.5km (2.2 miles) ⓘGreenburn Mine, Greenburn Valley, Coniston, South Lakeland, Cumbria, England, UK
3.7km (2.3 miles) ⓘHellens Mine, Coniston, South Lakeland, Cumbria, England, UK
3.8km (2.4 miles) ⓘTilberthwaite Gill, Coniston, South Lakeland, Cumbria, England, UK
10.6km (6.6 miles) ⓘHolehouse Gill Mine, Ulpha, Copeland, Cumbria, England, UK
10.7km (6.7 miles) ⓘUlpha Copper Mine, Ulpha, Copeland, Cumbria, England, UK
References
Stanley, C. J., Criddle, A. J. (1979) Mineralization at Seathwaite Tam, near Coniston, English Lake District: The first occurrence of wittichenite in Great Britain. Mineralogical Magazine, 43 (325) 103-107 doi:10.1180/minmag.1979.043.325.06
Day, Harry (1999) BMS Database, British Micromount Society.
 
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