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
Force Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Baryte1
Hematite1
Pyrite1
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Force Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15437
Long-form Identifier:1:3:15437:4
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
1.0km (0.6 miles) ⓘScar Crags, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
4.1km (2.6 miles) ⓘLittle Mine Crag, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
4.2km (2.6 miles) ⓘGoldscope Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
4.8km (3.0 miles) ⓘYewthwaite Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
4.8km (3.0 miles) ⓘThornthwaite Mine, Thornthwaite, Above Derwent, Allerdale, Cumbria, England, UK
5.2km (3.2 miles) ⓘBlack Crag, Above Derwent, Allerdale, Cumbria, England, UK
5.3km (3.3 miles) ⓘCastle Nook Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
5.4km (3.3 miles) ⓘBrandlehow Mine, Catbells, Borrowdale, Allerdale, Cumbria, England, UK
5.9km (3.7 miles) ⓘDale Head Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
5.9km (3.7 miles) ⓘManesty Vein, Grange, Borrowdale, Allerdale, Cumbria, England, UK
References
Jarvis, Adam P., Catherine J. Gandy, and John A. Webb. 2023. "Controls on the Generation and Geochemistry of Neutral Mine Drainage: Evidence from Force Crag Mine, Cumbria, UK" Minerals 13, no. 5: 592. https://doi.org/10.3390/min13050592
Young, B. & Cooper, A.H. (1988) The Geology and Mineralisation of Force Crag Mine, Cumbria. The Cumberland Geological Society, Proceedings: 5(1): 5-11.
 
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