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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Bornite from
Vulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA


Locality type:Quarry
Classification
Species:Bornite
Formula:Cu5FeS4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Bornite data
Locality Data:Click here to view Vulcan Materials Company Crushed Stone Quarry (Manassas Quarry), Manassas, Prince William County, Virginia, USA
Data Identifiers
Mindat Occurrence Record ID:93059
Long-form Identifier:1:3:93059:8
GUID (UUID V4):0
Nearest other occurrences of Bornite
6.7km (4.2 miles) ⓘGainesville Quarry, Gainesville, Prince William County, Virginia, USA
7.0km (4.4 miles) ⓘFairfax Quarry, Centreville, Culpeper Basin, Fairfax County, Virginia, USA
10.3km (6.4 miles) ⓘBull Run Quarry, Conklin, Loudoun County, Virginia, USA
16.2km (10.1 miles) ⓘChantilly Prospect A, Culpeper Basin, Fairfax County, Virginia, USA
28.9km (18.0 miles) ⓘUnnamed PGE Occurrence (MRDS - 10048644), Loudoun County, Virginia, USA
32.3km (20.1 miles) ⓘBull Neck Mine, Bull Neck Run, Gold-Pyrite Belt, Fairfax County, Virginia, USA
36.9km (23.0 miles) ⓘPotomac Mine, Leesburg, Loudoun County, Virginia, USA
43.1km (26.8 miles) ⓘHunting Hill Quarry, Rockville, Montgomery County, Maryland, USA
52.0km (32.3 miles) ⓘSealoch Mine (Ravenswood Mine; Sealock Mine; Marshall Mine; Old Sealoch Mine), Northern Section-Blue Ridge Province, Warren County, Virginia, USA
52.1km (32.4 miles) ⓘAmbler Mine, Northern Section-Blue Ridge Province, Fauquier County, Virginia, USA
References
Rocks & Min.: 60:168.
 
and/or  
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