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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Quartz from
Difficult Run, Fairfax County, Virginia, USA


Locality type:Stream
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Difficult Run, Fairfax County, Virginia, USA
Data Identifiers
Mindat Occurrence Record ID:345793
Long-form Identifier:1:3:345793:1
GUID (UUID V4):0
Nearest other occurrences of Quartz
2.5km (1.6 miles) ⓘMaryland Mine (Allen shaft), Potomac, Montgomery County, Maryland, USA
3.1km (1.9 miles) ⓘWatson Mine (Anderson Property; Potomac and Watson Mine), Potomac, Montgomery County, Maryland, USA
4.0km (2.5 miles) ⓘSawyer Mine, Cropley, Montgomery County, Maryland, USA
4.2km (2.6 miles) ⓘIrma Mine, Cropley, Montgomery County, Maryland, USA
4.2km (2.6 miles) ⓘFord Mine, Potomac, Montgomery County, Maryland, USA
4.3km (2.7 miles) ⓘStanmore Drive, Potomac, Montgomery County, Maryland, USA
5.0km (3.1 miles) ⓘMontgomery Mine (Potomac Mine), Potomac, Montgomery County, Maryland, USA
5.1km (3.1 miles) ⓘLynch Mine, Cropley, Montgomery County, Maryland, USA
5.1km (3.2 miles) ⓘBull Neck Mine, Bull Neck Run, Gold-Pyrite Belt, Fairfax County, Virginia, USA
7.8km (4.9 miles) ⓘCabin John Creek, Montgomery County, Maryland, USA
References
Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey.
 
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