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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Pyrite from
Hitner's Marble Quarry (Hitner's Quarry), Whitemarsh Township, Montgomery County, Pennsylvania, USA


Locality type:Quarry
Classification
Species:Pyrite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrite 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:360494
Long-form Identifier:1:3:360494:6
GUID (UUID V4):0
Nearest other occurrences of Pyrite
5.7km (3.5 miles) ⓘMcCrea's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
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
8.0km (5.0 miles) ⓘPrince's Soapstone Quarry, Lafayette Station, Philadelphia County, Pennsylvania, USA
10.0km (6.2 miles) ⓘGwynedd tunnel (Lansdale-Gwynedd tunnel), Upper Gwynedd Township, Montgomery County, Pennsylvania, USA
11.5km (7.1 miles) ⓘRidge Avenue and School Lane Quarries, East Falls, Fairmount Park, Philadelphia, Philadelphia County, Pennsylvania, USA
12.0km (7.5 miles) ⓘLimestone quarry, Upper Merion Township, Montgomery County, Pennsylvania, USA
12.3km (7.6 miles) ⓘFalls of Schuylkill, Fairmount Park, Philadelphia, Philadelphia County, Pennsylvania, USA
14.3km (8.9 miles) ⓘKing of Prussia, Upper Merion Township, Montgomery County, Pennsylvania, USA
15.6km (9.7 miles) ⓘOverbrook, Hestonville, Philadelphia 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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