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
Gainesville Quarry, Gainesville, Prince William County, Virginia, 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 Gainesville Quarry, Gainesville, Prince William County, Virginia, USA
Data Identifiers
Mindat Occurrence Record ID:65707
Long-form Identifier:1:3:65707:5
GUID (UUID V4):0
Nearest other occurrences of Chalcopyrite
6.7km (4.2 miles) ⓘVulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA
9.9km (6.1 miles) ⓘMillbrook Quarry (Haymarket Quarry), Haymarket, Prince William County, Virginia, USA
10.1km (6.3 miles) ⓘBull Run Quarry, Conklin, Loudoun County, Virginia, USA
10.6km (6.6 miles) ⓘFairfax Quarry, Centreville, Culpeper Basin, Fairfax County, Virginia, USA
19.5km (12.1 miles) ⓘMalachite Prospect (MRDS - 10203527), Chantilly, Fairfax County, Virginia, USA
24.0km (14.9 miles) ⓘTheodora Mine, Herndon, Fairfax County, Virginia, USA
26.2km (16.3 miles) ⓘElk Run Prospect, Potomac Basin, Fauquier County, Virginia, USA
26.5km (16.4 miles) ⓘUnnamed PGE Occurrence (MRDS - 10048644), Loudoun County, Virginia, USA
27.9km (17.3 miles) ⓘBealeton Prospect, Culpeper Basin, Fauquier County, Virginia, USA
31.7km (19.7 miles) ⓘFranklin Mine (Deep Run Mine), Midland, Gold-Pyrite Belt, Fauquier County, Virginia, USA
References
Rocks & Min.:60:168.
 
and/or  
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