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
Nether Row Brow, Caldbeck, Allerdale, Cumbria, England, UK


Classification
Species:Bournonite
Formula:PbCuSbS3
Comments:From the Nether Row Farm level, collected by B. Young in 1987 (det. BM(NH) and British Geological Survey (BGS): XRD, 1988).
Habit:small grains in sugary quartz
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Data
Mineral Data:Click here to view Bournonite data
Locality Data:Click here to view Nether Row Brow, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:15062
Long-form Identifier:1:3:15062:4
GUID (UUID V4):0
Nearest other occurrences of Bournonite
1.8km (1.1 miles) ⓘDriggith Mine, Caldbeck, Allerdale, Cumbria, England, UK
3.3km (2.1 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
3.9km (2.4 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
17.7km (11.0 miles) ⓘBarrow Mine, Above Derwent, Allerdale, Cumbria, England, UK
19.5km (12.1 miles) ⓘYewthwaite Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
19.7km (12.2 miles) ⓘForce Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
20.0km (12.4 miles) ⓘGreenside Mine, Patterdale, Eden, Cumbria, England, UK
20.8km (12.9 miles) ⓘGoldscope Mine, Newlands Valley, Above Derwent, Allerdale, Cumbria, England, UK
23.1km (14.3 miles) ⓘEagle Crag Mine, Patterdale, Eden, Cumbria, England, UK
26.0km (16.2 miles) ⓘHartsop Hall Mine, Hartsop, Patterdale, Eden, Cumbria, England, UK
References
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
 
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