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
Tilberthwaite Mine, Coniston, 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 Tilberthwaite Mine, Coniston, South Lakeland, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:14666
Long-form Identifier:1:3:14666:7
GUID (UUID V4):0
Nearest other occurrences of Arsenopyrite
0.5km (0.3 miles) ⓘHellens Mine, Coniston, South Lakeland, Cumbria, England, UK
0.6km (0.4 miles) ⓘTilberthwaite Gill, Coniston, South Lakeland, Cumbria, England, UK
0.6km (0.4 miles) ⓘBirk Fell Mine, Coniston, South Lakeland, Cumbria, England, UK
1.4km (0.9 miles) ⓘGreenburn Mine, Greenburn Valley, Coniston, South Lakeland, Cumbria, England, UK
2.6km (1.6 miles) ⓘBonser Mine, Coniston, South Lakeland, Cumbria, England, UK
2.6km (1.6 miles) ⓘPaddy End Mine, Coniston, South Lakeland, Cumbria, England, UK
2.8km (1.7 miles) ⓘConiston Copper Mines, Coniston, South Lakeland, Cumbria, England, UK
3.4km (2.1 miles) ⓘSeathwaite Mine, Dunnerdale-with-Seathwaite, South Lakeland, Cumbria, England, UK
13.2km (8.2 miles) ⓘWad Mine, Seathwaite, Borrowdale, Allerdale, Cumbria, England, UK
14.0km (8.7 miles) ⓘUlpha Copper Mine, Ulpha, Copeland, Cumbria, England, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
and/or  
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