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


Locality type:Mine
Classification
Species:Langite
Formula:Cu4(SO4)(OH)6 · 2H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Langite data
Locality Data:Click here to view Force Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:43383
Long-form Identifier:1:3:43383:7
GUID (UUID V4):0
Nearest other occurrences of Langite
2.9km (1.8 miles) ⓘStoneycroft Smelter slag locality, Above Derwent, Allerdale, Cumbria, England, UK
11.0km (6.9 miles) ⓘBrundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK
14.9km (9.3 miles) ⓘSaddleback Old Mine, Mungrisdale, Eden, Cumbria, England, UK
15.9km (9.9 miles) ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
16.2km (10.0 miles) ⓘRed Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
16.3km (10.2 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
16.6km (10.3 miles) ⓘMexico Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
17.1km (10.6 miles) ⓘBrae Fell Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
17.4km (10.8 miles) ⓘEagle Crag Mine, Patterdale, Eden, Cumbria, England, UK
18.7km (11.6 miles) ⓘDriggith Mine, Caldbeck, 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
Green, D.I., McCallum, D., Wood, M. (1997) Supergene Cu, Pb, Zn and Ag Minerals from Force Crag Mine, Coledale, Cumbria. UK Journal of Mines and Minerals 18, 10-14
 
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