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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Bournonite from
Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:Bournonite
Formula:PbCuSbS3
Comments:Kingsbury reference.
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Bournonite data
Locality Data:Click here to view Roughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15063
Long-form Identifier:1:3:15063:3
GUID (UUID V4):0
Nearest other occurrences of Bournonite
0.6km (0.4 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.7km (1.7 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
3.3km (2.1 miles) ⓘNether Row Brow, Caldbeck, Allerdale, Cumbria, England, UK
14.4km (8.9 miles) ⓘBarrow Mine, Above Derwent, Allerdale, Cumbria, England, UK
16.3km (10.1 miles) ⓘYewthwaite Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
16.3km (10.2 miles) ⓘForce Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
17.5km (10.9 miles) ⓘGoldscope Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
18.1km (11.2 miles) ⓘGreenside Mine, Patterdale, Eden, Cumbria, England, UK
20.9km (13.0 miles) ⓘEagle Crag Mine, Patterdale, Eden, Cumbria, England, UK
24.2km (15.1 miles) ⓘHartsop Hall Mine, Hartsop, Patterdale, Eden, Cumbria, England, UK
References
Kingsbury, A.W.G. and Hartley, J. (MS) (1951) New occurrences of rare minerals in the northern part of the English Lake District: part 1.
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
 
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