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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Plagioclase from
Panther Hill Granite Co. Quarry, Whitehall, Byram Township, Sussex County, New Jersey, USA


Locality type:Quarry
Classification
Species:'Plagioclase' (not an IMA approved species)
Formula:(Na,Ca)[(Si,Al)AlSi2]O8
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Plagioclase data
Locality Data:Click here to view Panther Hill Granite Co. Quarry, Whitehall, Byram Township, Sussex County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:73019
Long-form Identifier:1:3:73019:2
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
0.0km (0.0 miles) ⓘNorth Jersey Stone Co. Quarry, Cranberry Lake, Byram Township, Sussex County, New Jersey, USA
5.7km (3.6 miles) ⓘAllen Granite & Construction Co. Quarry, Mount Olive, Morris County, New Jersey, USA
12.9km (8.0 miles) ⓘScrub Oaks Mine, Mine Hill, Morris County, New Jersey, USA
14.2km (8.9 miles) ⓘJohnson Hill Mine, Wharton, Morris County, New Jersey, USA
14.5km (9.0 miles) ⓘCorwin Mine, Mine Hill, Morris County, New Jersey, USA
14.6km (9.1 miles) ⓘJ.D. King Mine, Mine Hill, Morris County, New Jersey, USA
15.5km (9.6 miles) ⓘDaniel Horton Mine (Horton Mine), Randolph Township, Morris County, New Jersey, USA
18.2km (11.3 miles) ⓘPassaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA
19.7km (12.3 miles) ⓘCopper Mine shaft, Edison Mine, Sparta Township, Sussex County, New Jersey, USA
21.4km (13.3 miles) ⓘBirch Mine, Rockaway Township, Morris County, New Jersey, USA
References
Rutgers Univ. Bull. #5, Pt 1:44.
 
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