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
Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA


Locality type:Valley
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Muscovite2
Ilmenite1
Kyanite1
Almandine1
Staurolite1
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Wissahickon Valley, Philadelphia, Philadelphia County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:320612
Long-form Identifier:1:3:320612:6
GUID (UUID V4):0
Nearest other occurrences of Quartz
2.0km (1.3 miles) ⓘComley's Quarry, Germantown, Philadelphia, Philadelphia County, Pennsylvania, USA
4.8km (3.0 miles) ⓘD.O. Hitner's Mine, Whitemarsh Township, Montgomery County, Pennsylvania, USA
4.9km (3.0 miles) ⓘRidge Avenue and School Lane Quarries, East Falls, Fairmount Park, Philadelphia, Philadelphia County, Pennsylvania, USA
5.2km (3.2 miles) ⓘEast Falls, Fairmount Park, Philadelphia, Philadelphia County, Pennsylvania, USA
5.4km (3.3 miles) ⓘOreland, Springfield Township, Montgomery County, Pennsylvania, USA
5.8km (3.6 miles) ⓘFalls of Schuylkill, Fairmount Park, Philadelphia, Philadelphia County, Pennsylvania, USA
5.8km (3.6 miles) ⓘSpring Mill Iron Ore pits, Whitemarsh Township, Montgomery County, Pennsylvania, USA
6.7km (4.1 miles) ⓘHitner's Marble Quarry (Hitner's Quarry), Whitemarsh Township, Montgomery County, Pennsylvania, USA
7.1km (4.4 miles) ⓘEdge Hill Iron Company Mine, Springfield Township, Montgomery County, Pennsylvania, USA
9.2km (5.7 miles) ⓘOverbrook, Hestonville, Philadelphia County, Pennsylvania, USA
References
Gordon, Samuel G. (1922) The Mineralogy of Pennsylvania. Special Publication 1. The Academy of Natural Sciences of Philadelphia 255pp.
 
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