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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Chalcocite from
Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA


Locality type:Quarry
Classification
Species:Chalcocite
Formula:Cu2S
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Calcite2
Prehnite1
Data
Mineral Data:Click here to view Chalcocite data
Locality Data:Click here to view Prospect Park Quarry, Prospect Park, Passaic County, New Jersey, USA
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:78690
Long-form Identifier:1:3:78690:6
GUID (UUID V4):0
Nearest other occurrences of Chalcocite
4.0km (2.5 miles) ⓘUpper New Street Quarry, Paterson, Passaic County, New Jersey, USA
7.2km (4.5 miles) ⓘUnion Building and Construction Quarry, Woodland Park, Passaic County, New Jersey, USA
8.2km (5.1 miles) ⓘHoudaille Quarry, Little Falls Township, Passaic County, New Jersey, USA
8.2km (5.1 miles) ⓘFrancisco Brothers Quarry, Great Notch, Little Falls Township, Passaic County, New Jersey, USA
11.1km (6.9 miles) ⓘMcDowell's Quarry (Osborne and Marsellis Quarry), Upper Montclair, Montclair, Essex County, New Jersey, USA
14.2km (8.9 miles) ⓘAvondale, Nutley, Essex County, New Jersey, USA
15.9km (9.9 miles) ⓘGlen Ridge Mines, Glen Ridge, Essex County, New Jersey, USA
18.2km (11.3 miles) ⓘDod Mine, East Orange, Essex County, New Jersey, USA
18.6km (11.5 miles) ⓘSchuyler Copper Mine, North Arlington, Bergen County, New Jersey, USA
21.6km (13.4 miles) ⓘLaurel Hill, Secaucus, Hudson County, New Jersey, USA
References
Vitali, G. (1978) Minerals of the Watchungs - Part II. Lapidary Journal: 32: 1700-1720.
Peters, Thomas A., Peters, Joseph J. (1978) Famous Mineral Localities: Paterson, New Jersey. The Mineralogical Record, 9 (3) 157-179
Peters, Joseph J. (1984) Triassic Traprock Minerals of New Jersey. Rocks & Minerals, 59 (4) 157-183 doi:10.1080/00357529.1984.11764472
 
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