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
New Brancepeth Colliery (Sleetburn Colliery), Deerness Valley, Brandon and Byshottles, County Durham, England, UK


Locality type:Colliery
Classification
Species:Sphalerite
Formula:ZnS
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sphalerite data
Locality Data:Click here to view New Brancepeth Colliery (Sleetburn Colliery), Deerness Valley, Brandon and Byshottles, County Durham, England, UK
Data Identifiers
Mindat Occurrence Record ID:148786
Long-form Identifier:1:3:148786:2
GUID (UUID V4):0
Nearest other occurrences of Sphalerite
10.0km (6.2 miles) ⓘSouth Moor Colliery, Stanley, County Durham, England, UK
13.8km (8.6 miles) ⓘRaisby Quarries (Raisby Hill Quarry), Kelloe, County Durham, England, UK
21.6km (13.4 miles) ⓘRogerley Mine, Rogerley Quarry, Stanhope, County Durham, England, UK
21.7km (13.5 miles) ⓘDiana Maria Mine, Rogerley Quarry, Stanhope, County Durham, England, UK
22.7km (14.1 miles) ⓘBurnhope Mine, Edmondbyers, County Durham, England, UK
23.8km (14.8 miles) ⓘSharnberry Mine (Skarnberry Mine), Eggleston, County Durham, England, UK
27.4km (17.0 miles) ⓘShildon Mines, Blanchland, Northumberland, England, UK
27.4km (17.0 miles) ⓘRamshaw and Jeffreys Mines, Derwent Mines, Hunstanworth, County Durham, England, UK
27.5km (17.1 miles) ⓘManorgill Mine, Middleton-in-Teesdale, County Durham, England, UK
27.9km (17.3 miles) ⓘWhiteheaps Mine, Hunstanworth, County Durham, England, UK
References
Spencer, L. J. (1910) On the occurrence of Alstonite and Ullmannite (a species new to Britain) in a Barytes-Witherite vein at the New Brancepeth Colliery near Durham. Mineralogical Magazine and Journal of the Mineralogical Society, 15 (71) 302-311 doi:10.1180/minmag.1910.015.71.07
Dunham, K.C. (1990) Geology of the Northern Pennine Orefield, Volume 1, Tyne to Stainmore. 2nd edition, British Geological Survey.pp.276-278
 
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