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
Kibblehouse Quarry, Perkiomenville, Marlborough Township, Montgomery County, Pennsylvania, USA


Locality type:Quarry
Classification
Species:Pyrolusite
Formula:Mn4+O2
Confirmation
Validity:Unconfirmed/Questioned
Data
Mineral Data:Click here to view Pyrolusite data
Locality Data:Click here to view Kibblehouse Quarry, Perkiomenville, Marlborough Township, Montgomery County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:132804
Long-form Identifier:1:3:132804:2
GUID (UUID V4):0
Nearest other occurrences of Pyrolusite
25.9km (16.1 miles) ⓘFriedensville Mine, Friedensville, Upper Saucon Township, Lehigh County, Pennsylvania, USA
28.0km (17.4 miles) ⓘMountainville, Salisbury Township, Lehigh County, Pennsylvania, USA
31.8km (19.8 miles) ⓘD.O. Hitner's Mine, Whitemarsh Township, Montgomery County, Pennsylvania, USA
32.0km (19.9 miles) ⓘSpring Mill Iron Ore pits, Whitemarsh Township, Montgomery County, Pennsylvania, USA
33.5km (20.8 miles) ⓘOreland, Springfield Township, Montgomery County, Pennsylvania, USA
34.5km (21.4 miles) ⓘEdge Hill Iron Company Mine, Springfield Township, Montgomery County, Pennsylvania, USA
46.0km (28.6 miles) ⓘOsborne Hill, Birmingham Township, Chester County, Pennsylvania, USA
49.1km (30.5 miles) ⓘSherrer Quarry, C.K. Williams Quarry complex, Chestnut Hill, Easton, Northampton County, Pennsylvania, USA
49.5km (30.7 miles) ⓘChestnut Hill, Easton, Northampton County, Pennsylvania, USA
60.4km (37.5 miles) ⓘUnnamed manganese mines, Clinton Township, Hunterdon County, New Jersey, USA
References
Lapham, Davis M., Geyer, Alan R. (1965) Mineral Collecting in Pennsylvania. Bulletin G33 (2nd ed.). Pennsylvania Geological Survey
 
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