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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Sphalerite from
Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK


Locality type:Mine
Classification
Species:Sphalerite
Formula:ZnS
Habit:as small blebs with typical cleavage associated with galena and chalcopyrite in quartz matrix and as small (ca. 3 mm) crystals in quartz.
Colour:brown
Abundance at site:Rare
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sphalerite data
Locality Data:Click here to view Red Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
Data Identifiers
Mindat Occurrence Record ID:17758
Long-form Identifier:1:3:17758:8
GUID (UUID V4):0
Nearest other occurrences of Sphalerite
0.7km (0.4 miles) ⓘRoughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.7km (0.5 miles) ⓘSilver Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.8km (0.5 miles) ⓘRoughton Gill Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
0.9km (0.6 miles) ⓘBrae Fell Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.0km (0.6 miles) ⓘTodd Gill, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.1km (0.7 miles) ⓘHigher Roughton Gill (Balliway Rigg), Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
1.8km (1.1 miles) ⓘHay Gill Copper Mine, Roughton Gill, Caldbeck, Allerdale, Cumbria, England, UK
2.1km (1.3 miles) ⓘShort Grain, Deer Hills, Caldbeck, Allerdale, Cumbria, England, UK
2.3km (1.4 miles) ⓘLonglands Fell Mine, Ireby and Uldale, Allerdale, Cumbria, England, UK
2.8km (1.7 miles) ⓘDry Gill Mine, Caldbeck, Allerdale, Cumbria, England, UK
References
Van Den Berg, W. (1985) Mineralen zoeken in de Caldbeck Fells (Lake District). Gea (Driemaandelijks tijdschrift van de Stichting Geologische Aktiviteiten), 18, 39-48 (in Dutch).
Cooper, M. P., Stanley, C. J. (1990) Minerals of the English Lake District - Caldbeck Fells. The Natural History Museum, London.
Bridges, T.F., Green, D.I., Rumsey, M.S., Leppington, C.M. (2008) A review of the mineralisation at Red Gill Mine, Caldbeck Fells, Cumbria, England. Journal of the Russell Society, 11. 29-47
 
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