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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Chalcopyrite from
Longlands Fell Mine, Ireby and Uldale, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Longlands Fell Mine, Ireby and Uldale, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15466
Long-form Identifier:1:3:15466:6
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
2.3km (1.4 miles) ⓘRed Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.5km (1.5 miles) ⓘSwinburn Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.6km (1.6 miles) ⓘBrae Fell Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.9km (1.8 miles) ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.0km (1.9 miles) ⓘRoughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.1km (1.9 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.2km (2.0 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.3km (2.1 miles) ⓘMexico Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.4km (2.1 miles) ⓘIron Crag, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.7km (2.3 miles) ⓘHay Gill Copper Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
References
Day, Harry (1999) BMS Database, British Micromount Society.
 
and/or  
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