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
McKinney's Quarry, Rittenhouse Lane, Philadelphia, Philadelphia County, Pennsylvania, 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 McKinney's Quarry, Rittenhouse Lane, Philadelphia, Philadelphia County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:96641
Long-form Identifier:1:3:96641:4
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
3.2km (2.0 miles) ⓘFowler's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
4.5km (2.8 miles) ⓘWissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
6.7km (4.2 miles) ⓘJerry O'Neill's Quarry, Tacony Creek Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
7.5km (4.7 miles) ⓘClark's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
7.8km (4.9 miles) ⓘPeter's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
7.8km (4.9 miles) ⓘBarber's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
10.5km (6.6 miles) ⓘHitner's Marble Quarry (Hitner's Quarry), Whitemarsh Township, Montgomery County, Pennsylvania, USA
13.5km (8.4 miles) ⓘHolmesburg Granite Company Quarry, Holmesburg, Philadelphia, Philadelphia County, Pennsylvania, USA
18.8km (11.7 miles) ⓘKing of Prussia, Upper Merion Township, Montgomery County, Pennsylvania, USA
24.8km (15.4 miles) ⓘWhim shaft, Perkiomen Mines, Audubon, Lower Providence Township, Montgomery County, Pennsylvania, USA
References
Dana 6: 576 & 1070.
 
and/or  
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