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
Scrub Oaks Mine, Mine Hill, Morris County, New Jersey, USA


Locality type:Mine
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 Scrub Oaks Mine, Mine Hill, Morris County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:73385
Long-form Identifier:1:3:73385:2
GUID (UUID V4):0
Nearest other occurrences of Plagioclase
1.5km (0.9 miles) ⓘJohnson Hill Mine, Wharton, Morris County, New Jersey, USA
1.6km (1.0 miles) ⓘCorwin Mine, Mine Hill, Morris County, New Jersey, USA
1.7km (1.1 miles) ⓘJ.D. King Mine, Mine Hill, Morris County, New Jersey, USA
6.9km (4.3 miles) ⓘDaniel Horton Mine (Horton Mine), Randolph Township, Morris County, New Jersey, USA
12.5km (7.8 miles) ⓘAllen Granite & Construction Co. Quarry, Mount Olive, Morris County, New Jersey, USA
12.9km (8.0 miles) ⓘNorth Jersey Stone Co. Quarry, Cranberry Lake, Byram Township, Sussex County, New Jersey, USA
12.9km (8.0 miles) ⓘPanther Hill Granite Co. Quarry, Whitehall, Byram Township, Sussex County, New Jersey, USA
13.1km (8.1 miles) ⓘBirch Mine, Rockaway Township, Morris County, New Jersey, USA
14.4km (9.0 miles) ⓘTorne Quarry, Powerville, Boonton Township, Morris County, New Jersey, USA
17.5km (10.9 miles) ⓘCharlotteburg Mine, Rockaway Township, Morris County, New Jersey, USA
References
Rutgers Univ. Bull. #5, Pt 1:43.
US Dept. of Interior Bur. of Mines Rpt of Investigation (ROI) #6885, Williams, R.L. (1967): 18
 
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