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
Hitner's Marble Quarry (Hitner's Quarry), Whitemarsh Township, Montgomery 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 Hitner's Marble Quarry (Hitner's Quarry), Whitemarsh Township, Montgomery County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:360495
Long-form Identifier:1:3:360495:3
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
6.7km (4.1 miles) ⓘWissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
7.9km (4.9 miles) ⓘFowler's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
10.5km (6.6 miles) ⓘMcKinney's Quarry, Rittenhouse Lane, Philadelphia, Philadelphia County, Pennsylvania, USA
14.3km (8.9 miles) ⓘKing of Prussia, Upper Merion Township, Montgomery County, Pennsylvania, USA
14.3km (8.9 miles) ⓘJerry O'Neill's Quarry, Tacony Creek Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
15.4km (9.5 miles) ⓘClark's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
15.7km (9.8 miles) ⓘPeter's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
15.7km (9.8 miles) ⓘBarber's Quarry, Frankford, Philadelphia, Philadelphia County, Pennsylvania, USA
17.3km (10.8 miles) ⓘHolmesburg Granite Company Quarry, Holmesburg, Philadelphia, Philadelphia County, Pennsylvania, USA
19.0km (11.8 miles) ⓘWhim shaft, Perkiomen Mines, Audubon, Lower Providence Township, Montgomery County, Pennsylvania, USA
References
Samuel S. Gordon, pg. 218
Gordon, Samuel G. (1922) The Mineralogy of Pennsylvania. Special Publication 1. The Academy of Natural Sciences of Philadelphia 255pp.
 
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