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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Pyrolusite from
Friedensville Mine, Friedensville, Upper Saucon Township, Lehigh County, Pennsylvania, USA


Locality type:Mine
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Friedensville Mine, Friedensville, Upper Saucon Township, Lehigh County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:612283
Long-form Identifier:1:3:612283:6
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
5.2km (3.2 miles) ⓘMountainville, Salisbury Township, Lehigh County, Pennsylvania, USA
25.0km (15.5 miles) ⓘSherrer Quarry, C.K. Williams Quarry complex, Chestnut Hill, Easton, Northampton County, Pennsylvania, USA
25.3km (15.7 miles) ⓘChestnut Hill, Easton, Northampton County, Pennsylvania, USA
25.9km (16.1 miles) ⓘKibblehouse Quarry, Perkiomenville, Marlborough Township, Montgomery County, Pennsylvania, USA
44.3km (27.5 miles) ⓘAhles Mine (Osmun-Robeson Mine; Pequest), Oxford Furnace, Oxford Township, Warren County, New Jersey, USA
44.6km (27.7 miles) ⓘUnnamed manganese mines, Clinton Township, Hunterdon County, New Jersey, USA
52.4km (32.6 miles) ⓘD.O. Hitner's Mine, Whitemarsh Township, Montgomery County, Pennsylvania, USA
52.4km (32.6 miles) ⓘEdge Hill Iron Company Mine, Springfield Township, Montgomery County, Pennsylvania, USA
52.5km (32.6 miles) ⓘOreland, Springfield Township, Montgomery County, Pennsylvania, USA
53.7km (33.4 miles) ⓘSpring Mill Iron Ore pits, Whitemarsh Township, Montgomery County, Pennsylvania, USA
References
Rocks & Minerals (1955) 30:394
 
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