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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Schorl from
Brinton's Quarry, Westtown Township, Chester County, Pennsylvania, USA


Locality type:Quarry
Classification
Species:Schorl
Formula:NaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Schorl data
Locality Data:Click here to view Brinton's Quarry, Westtown Township, Chester County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:150601
Long-form Identifier:1:3:150601:3
GUID (UUID V4):0
Nearest other occurrences of Schorl
1.5km (0.9 miles) ⓘOsborne Hill, Birmingham Township, Chester County, Pennsylvania, USA
14.1km (8.8 miles) ⓘHenry Pusey's quarry, Willowdale, East Marlboro Township, Chester County, Pennsylvania, USA
14.8km (9.2 miles) ⓘDickson's Quarry (Dixon's Quarry), Wilmington, New Castle County, Delaware, USA
15.5km (9.6 miles) ⓘBoothwyn, Upper Chichester Township, Delaware County, Pennsylvania, USA
19.5km (12.1 miles) ⓘDeshong's Quarry, Leiperville, Ridley Township, Delaware County, Pennsylvania, USA
20.0km (12.5 miles) ⓘSmedley Park beryl locality, Springfield Township, Delaware County, Pennsylvania, USA
21.1km (13.1 miles) ⓘCoatesville pegmatite locality, Coatesville, Chester County, Pennsylvania, USA
22.3km (13.9 miles) ⓘKeystone Trap Rock Quarry, Cornog, Wallace Township, Chester County, Pennsylvania, USA
28.8km (17.9 miles) ⓘWest Branch pegmatite, Newark, New Castle County, Delaware, USA
29.9km (18.6 miles) ⓘElk Creek pegmatite, Elk Township, Chester County, Pennsylvania, USA
References
Lapham, Davis M., Geyer, Alan R. (1965) Mineral Collecting in Pennsylvania. Bulletin G33 (2nd ed.). Pennsylvania Geological Survey
also: (1969) edition.
Reed, Juliet C., Annotated Bibliography of Minerals New to the Pa List - 1965-1974, Min. Soc. of PA, Inc. (1976): 41, 70
 
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