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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Pyrolusite from
Old Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Old Potts Gill Mine, Potts Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:17304
Long-form Identifier:1:3:17304:1
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
1.2km (0.8 miles) ⓘIngray Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.5km (0.9 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
2.0km (1.2 miles) ⓘDry Gill Mine, Caldbeck, Allerdale, Cumbria, England, UK
2.7km (1.7 miles) ⓘBrandy Gill Mine, Mungrisdale, Eden, Cumbria, England, UK
3.2km (2.0 miles) ⓘArm O'Grain, Mungrisdale, Eden, Cumbria, England, UK
3.2km (2.0 miles) ⓘThief Gills, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.2km (2.0 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
4.3km (2.6 miles) ⓘBurdell Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK
18.2km (11.3 miles) ⓘBrandlehow Mine, Catbells, Borrowdale, Allerdale, Cumbria, England, UK
19.6km (12.2 miles) ⓘGreenside Mine, Patterdale, Eden, Cumbria, England, UK
References
Shaw, W. T. (1972) Mining in the Lake Counties (2nd ed.) Dalesman Books, Clapham, Lancaster.
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
 
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