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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Chalcopyrite from
Hartshorn Quarry, Short Hills, Millburn, Essex County, New Jersey, USA


Locality type:Quarry
Classification
Species:Chalcopyrite
Formula:CuFeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Hartshorn Quarry, Short Hills, Millburn, Essex County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:80152
Long-form Identifier:1:3:80152:4
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
5.1km (3.2 miles) ⓘHoudaille Quarry (Summit Quarry; Commonwealth Quarry), Springfield, Springfield Township, Union County, New Jersey, USA
5.9km (3.6 miles) ⓘRiker Hill, Livingston, Livingston, Essex County, New Jersey, USA
9.5km (5.9 miles) ⓘFeltville Copper mine, Glenside Park (Feltville), Watchung Reservation, Union County, New Jersey, USA
12.5km (7.8 miles) ⓘFanwood Quarry (Weldon Quarry), Watchung, Somerset County, New Jersey, USA
13.8km (8.5 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
15.7km (9.8 miles) ⓘAvondale, Nutley, Essex County, New Jersey, USA
16.4km (10.2 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
16.8km (10.5 miles) ⓘWilson's Quarry (Wilson Stone Co. Quarry), Watchung, Somerset County, New Jersey, USA
17.8km (11.1 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
18.7km (11.6 miles) ⓘMcBride Avenue & Browertown Road pumping station, Woodland Park, Passaic 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.91
 
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