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
Mineral Hill Mine, Louisville, Carroll County, Maryland, USA


Locality type:Mine
Classification
Species:Pyrite
Formula:FeS2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Chalcopyrite2
Actinolite2
Carrollite2
Talc2
Siegenite2
Data
Mineral Data:Click here to view Pyrite data
Locality Data:Click here to view Mineral Hill Mine, Louisville, Carroll County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:98182
Long-form Identifier:1:3:98182:0
GUID (UUID V4):0
Nearest other occurrences of Pyrite
0.8km (0.5 miles) ⓘBeasman prospect, Eldersburg, Carroll County, Maryland, USA
2.2km (1.4 miles) ⓘMonroe prospect, Eldersburg, Carroll County, Maryland, USA
7.0km (4.3 miles) ⓘWildesen Mine, Patapsco Mines, Finksburg, Carroll County, Maryland, USA
7.6km (4.7 miles) ⓘSpringfield Mine (Mr. Tysons Mine; Sykesville Mine), Sykesville, Carroll County, Maryland, USA
8.1km (5.1 miles) ⓘMarriottsville Talc Quarries, Carroll County, Maryland, USA
8.7km (5.4 miles) ⓘFlorence Mine, Sykesville, Carroll County, Maryland, USA
8.9km (5.5 miles) ⓘMarriottsville Quarry, Hernwood, Baltimore County, Maryland, USA
9.3km (5.8 miles) ⓘOursler Talc Quarries, Carroll County, Maryland, USA
9.4km (5.9 miles) ⓘRuby Quarry; Ruby Flint, Carroll County, Maryland, USA
10.1km (6.3 miles) ⓘCostley Gold Mine, Carroll County, Maryland, USA
References
Rocks & Min.:26:111,121.
Econ Geol (1989) 84:663-675
 
and/or  
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