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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Serpentine Subgroup from
Red Pit Mine, Fulton Township, Lancaster County, Pennsylvania, USA


Locality type:Mine
Classification
Species:'Serpentine Subgroup' (not an IMA approved species)
Formula:D3[Si2O5](OH)4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Serpentine Subgroup data
Locality Data:Click here to view Red Pit Mine, Fulton Township, Lancaster County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:360558
Long-form Identifier:1:3:360558:5
GUID (UUID V4):0
Nearest other occurrences of Serpentine Subgroup
0.6km (0.4 miles) ⓘRock Springs Run, Fulton Township, Lancaster County, Pennsylvania, USA
0.9km (0.5 miles) ⓘJenkins Mine (Jenkins Corner; North Rock Springs), Fulton Township, Lancaster County, Pennsylvania, USA
0.9km (0.6 miles) ⓘLine pit (Lowe's Mine), Cecil County, Maryland, USA
0.9km (0.6 miles) ⓘLine pit (Lowe's Chromite Mine), Fulton Township, Lancaster County, Pennsylvania, USA
1.0km (0.6 miles) ⓘWet Pit Slaymaker Property, Fulton Township, Lancaster County, Pennsylvania, USA
1.3km (0.8 miles) ⓘHaines & Kibblehouse Penn-Maryland Materials Quarry, Fulton Township, Lancaster County, Pennsylvania, USA
1.9km (1.2 miles) ⓘPreston Farm Pits, Cecil County, Maryland, USA
2.1km (1.3 miles) ⓘGeiger Quarry, Little Britain Township, Lancaster County, Pennsylvania, USA
2.1km (1.3 miles) ⓘCedar Hill Quarry (Stoltzfuss Quarry), Fulton Township, Lancaster County, Pennsylvania, USA
2.7km (1.7 miles) ⓘConowingo Marble and Mineral Quarry, Cecil County, Maryland, USA
References
Lapham, Davis M., Geyer, Alan R., Geyer, Alan R., Smith II, Robert C., Barnes, John H. (1976) Mineral Collecting in Pennsylvania. Bulletin G33 (4th ed.). Pennsylvania Geological Survey pp.154-155
 
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