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
Haddington section, Philadelphia, Philadelphia County, Pennsylvania, USA


Locality type:Section
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 Haddington section, Philadelphia, Philadelphia County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:150609
Long-form Identifier:1:3:150609:9
GUID (UUID V4):0
Nearest other occurrences of Schorl
1.1km (0.7 miles) ⓘHestonville, Philadelphia County, Pennsylvania, USA
6.2km (3.9 miles) ⓘRock Hill Road, Pencoyd (West Manayunk), Lower Merion Township, Montgomery County, Pennsylvania, USA
9.9km (6.1 miles) ⓘWissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
12.0km (7.5 miles) ⓘDeshong's Quarry, Leiperville, Ridley Township, Delaware County, Pennsylvania, USA
12.0km (7.5 miles) ⓘSmedley Park beryl locality, Springfield Township, Delaware County, Pennsylvania, USA
13.2km (8.2 miles) ⓘBarber's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
22.5km (14.0 miles) ⓘGreyhorse Road, Willow Grove, Upper Moreland Township, Montgomery County, Pennsylvania, USA
23.7km (14.7 miles) ⓘBoothwyn, Upper Chichester Township, Delaware County, Pennsylvania, USA
31.1km (19.3 miles) ⓘBrinton's Quarry, Westtown Township, Chester County, Pennsylvania, USA
32.0km (19.9 miles) ⓘOsborne Hill, Birmingham Township, Chester County, Pennsylvania, USA
References
Grant, Raymond W. (Jun, 1974), PA Minerals (PM), PM(138), Keystone Newsletter.
Reed, Juliet C., Annotated Bibliography of Minerals New to the Pennsylvania List - 1965-1974, Min. Soc. of PA, Inc. (1976): 70-71
 
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