Vote for your favorite mineral in #MinCup26! - Hafnon vs. Putnisite
It's a pair of tiny minerals of unusual chemistry as orange Hafnon battles with purple Putnisite.
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Marcasite from
Bladensburg, Prince Georges County, Maryland, USA


Locality type:Town
Classification
Species:Marcasite
Formula:FeS2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Marcasite data
Locality Data:Click here to view Bladensburg, Prince Georges County, Maryland, USA
Data Identifiers
Mindat Occurrence Record ID:861596
Long-form Identifier:1:3:861596:1
GUID (UUID V4):0
Nearest other occurrences of Marcasite
5.0km (3.1 miles) ⓘPrince Georges Mall, Prince Georges County, Maryland, USA
15.0km (9.3 miles) ⓘMuirkirk Pit (Maryland Clay Products), Prince Georges County, Maryland, USA
33.1km (20.6 miles) ⓘHanover, Anne Arundel County, Maryland, USA
47.5km (29.5 miles) ⓘPinehurst, Anne Arundel County, Maryland, USA
50.3km (31.3 miles) ⓘJones Falls Quarries, Baltimore City, Maryland, USA
51.3km (31.9 miles) ⓘWoodberry Quarry, Woodberry, Baltimore City, Maryland, USA
53.4km (33.2 miles) ⓘBull Run Quarry, Conklin, Loudoun County, Virginia, USA
73.7km (45.8 miles) ⓘCalvert Cliffs, Calvert County, Maryland, USA
79.4km (49.4 miles) ⓘFranklin Mine (Deep Run Mine), Midland, Gold-Pyrite Belt, Fauquier County, Virginia, USA
87.7km (54.5 miles) ⓘUnited States Mines (Welford Mine), Rappahannock River, Gold-Pyrite Belt, Spotsylvania County, Virginia, USA
References
Bernstein, Lawrence R. (1976) Minerals of Washington, D.C. and vicinity. Open-File Report Vol. 76-849. US Geological Survey doi:10.3133/ofr76849
 
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