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
Frost Quarry, Davis, Howard County, Maryland, USA


Locality type:Quarry
Classification
Species:Pyrite
Formula:FeS2
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Pyrite data
Locality Data:Click here to view Frost Quarry, Davis, Howard County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:202028
Long-form Identifier:1:3:202028:0
GUID (UUID V4):0
Nearest other occurrences of Pyrite
2.1km (1.3 miles) ⓘWoodstock, Howard County, Maryland, USA
5.6km (3.5 miles) ⓘNorthern pit, Hollofield Gabbro Quarries, Hollofield, Baltimore County, Maryland, USA
5.6km (3.5 miles) ⓘSouthern Pit, Hollofield Gabbro Quarries, Hollofield, Baltimore County, Maryland, USA
6.8km (4.2 miles) ⓘMarriottsville Quarry, Hernwood, Baltimore County, Maryland, USA
7.2km (4.5 miles) ⓘOursler Talc Quarries, Carroll County, Maryland, USA
7.3km (4.5 miles) ⓘEllicott City, Howard County, Maryland, USA
7.5km (4.7 miles) ⓘMarriottsville Talc Quarries, Carroll County, Maryland, USA
9.7km (6.0 miles) ⓘBallard Green Quartz Occurrence, Owings Mills, Baltimore County, Maryland, USA
11.1km (6.9 miles) ⓘFlorence Mine, Sykesville, Carroll County, Maryland, USA
12.6km (7.8 miles) ⓘSpringfield Mine (Mr. Tysons Mine; Sykesville Mine), Sykesville, Carroll County, Maryland, USA
References
reported by Ostrander and Price(1940) but not seen in in dumps by Bernstein (1980)
 
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