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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Gypsum from
Midvale, Wanaque, Passaic County, New Jersey, USA


Locality type:Occurrence
Classification
Species:Gypsum
Formula:CaSO4 · 2H2O
Comments:Occurs in gneiss.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Gypsum data
Locality Data:Click here to view Midvale, Wanaque, Passaic County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:79792
Long-form Identifier:1:3:79792:0
GUID (UUID V4):0
Nearest other occurrences of Gypsum
11.7km (7.3 miles) ⓘBoston mine, Orange County, New York, USA
14.2km (8.8 miles) ⓘBraens Quarry, North Haledon, Passaic County, New Jersey, USA
14.7km (9.1 miles) ⓘBraen Quarry, Haledon, Passaic County, New Jersey, USA
15.1km (9.4 miles) ⓘProspect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
18.0km (11.2 miles) ⓘLower New Street Quarry, Paterson, Passaic County, New Jersey, USA
18.0km (11.2 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
20.8km (12.9 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
20.8km (12.9 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
21.3km (13.3 miles) ⓘHoudaille Quarry, Little Falls Township, Passaic County, New Jersey, USA
23.5km (14.6 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
References
Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1). New York Mineralogical Clubp.81
 
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