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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Pyrolusite from
Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA


Locality type:Quarry
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Francisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:73180
Long-form Identifier:1:3:73180:9
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
3.2km (2.0 miles) ⓘRiverside Quarry, Woodland Park, Passaic County, New Jersey, USA
4.1km (2.5 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
4.2km (2.6 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
8.2km (5.1 miles) ⓘProspect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
16.2km (10.1 miles) ⓘLaurel Hill, Secaucus, Hudson County, New Jersey, USA
20.1km (12.5 miles) ⓘInterstate 95 and George Washington Bridge Lower Level roadcut, Fort Lee, Bergen County, New Jersey, USA
33.2km (20.6 miles) ⓘScrub Oaks Mine, Mine Hill, Morris County, New Jersey, USA
42.6km (26.5 miles) ⓘLake Street Quarry, Harrison, Westchester County, New York, USA
43.4km (27.0 miles) ⓘOssining (Sing Sing), Westchester County, New York, USA
43.9km (27.3 miles) ⓘChimney Rock Quarry, Bridgewater Township, Somerset County, New Jersey, USA
References
NJ Geol. Survey Bull. #64 (1960), Mason, B.
 
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