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
Gooseberry Mine, Balls Hill Iron Mines, Franklin, Sussex County, New Jersey, USA


Locality type:Mine
Classification
Species:Chalcopyrite
Formula:CuFeS2
Comments:Occurs in conjunction with a magnetite orebody hosted in Cork Hill gneiss at its contact with Precambrian Franklin marble.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcopyrite data
Locality Data:Click here to view Gooseberry Mine, Balls Hill Iron Mines, Franklin, Sussex County, New Jersey, USA
Data Identifiers
Mindat Occurrence Record ID:51760
Long-form Identifier:1:3:51760:7
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
0.9km (0.6 miles) ⓘBuckwheat dump mineral collecting site, Franklin Mine, Franklin, Sussex County, New Jersey, USA
1.1km (0.7 miles) ⓘBuckwheat pit, Franklin Mine, Franklin, Sussex County, New Jersey, USA
1.2km (0.7 miles) ⓘFranklin Mine, Franklin, Sussex County, New Jersey, USA
2.0km (1.2 miles) ⓘMill site dump, Franklin Mine, Franklin, Sussex County, New Jersey, USA
2.7km (1.7 miles) ⓘSterling Mine, Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA
2.9km (1.8 miles) ⓘPassaic pit (Marshall Mine; Passaic Mine), Sterling Hill, Ogdensburg, Sussex County, New Jersey, USA
5.1km (3.2 miles) ⓘCopper Mine shaft, Edison Mine, Sparta Township, Sussex County, New Jersey, USA
5.3km (3.3 miles) ⓘEdison Mine, Sparta Township, Sussex County, New Jersey, USA
5.9km (3.6 miles) ⓘWindsor Quarry (Winsor Quarry), Rudeville, Hardyston Township, Sussex County, New Jersey, USA
9.6km (6.0 miles) ⓘMcAfee Quarry, McAfee, Vernon Township, Sussex County, New Jersey, USA
References
Dunn, Pete J. (1995) Franklin and Sterling Hill, New Jersey: The world's most magnificent mineral deposits Vol. 2. The Franklin-Ogdensburg Mineralogical Society.p.249
 
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