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


Locality type:Mine
Classification
Species:'Psilomelane' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Psilomelane data
Locality Data:Click here to view Force Crag Mine, Coledale, Above Derwent, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:17396
Long-form Identifier:1:3:17396:2
GUID (UUID V4):0
Nearest other occurrences of Psilomelane
1.1km (0.7 miles) ⓘCobalt Mine, Scar Crag, Causey Pike, Above Derwent, Allerdale, Cumbria, England, UK
14.9km (9.3 miles) ⓘOre Gap, Borrowdale, Allerdale, Cumbria, England, UK
15.2km (9.4 miles) ⓘBurdell Gill, Coombe Height, Caldbeck, Allerdale, Cumbria, England, UK
15.8km (9.8 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, 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
16.4km (10.2 miles) ⓘIron Crag, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
16.4km (10.2 miles) ⓘArm O'Grain, Mungrisdale, Eden, Cumbria, England, UK
16.6km (10.3 miles) ⓘMexico Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
References
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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