Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Muscovite from
Cornwall Mines (Cornwall Iron Mine), Cornwall Borough (Cornwall), Lebanon County, Pennsylvania, USA


Locality type:Mine
Classification
Species:Muscovite
Formula:KAl2(AlSi3O10)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Cornwall Mines (Cornwall Iron Mine), Cornwall Borough (Cornwall), Lebanon County, Pennsylvania, USA
Data Identifiers
Mindat Occurrence Record ID:132738
Long-form Identifier:1:3:132738:0
GUID (UUID V4):0
Nearest other occurrences of Muscovite
23.9km (14.8 miles) ⓘChestnut Hill, West Hempfield Township, Lancaster County, Pennsylvania, USA
30.3km (18.8 miles) ⓘCounty Line Quarry, Wrightsville, York County, Pennsylvania, USA
44.2km (27.4 miles) ⓘRawlinsville, Martic Township, Lancaster County, Pennsylvania, USA
45.4km (28.2 miles) ⓘGrace Mine, Morgantown, Berks County, Pennsylvania, USA
53.8km (33.4 miles) ⓘKing Mine, Dillsburg Iron Mines, Dillsburg, York County, Pennsylvania, USA
54.2km (33.7 miles) ⓘPrice Mine, Dillsburg Iron Mines, Dillsburg, York County, Pennsylvania, USA
54.3km (33.7 miles) ⓘJauss Mine, Dillsburg Iron Mines, Dillsburg, York County, Pennsylvania, USA
54.8km (34.0 miles) ⓘAltland Mine, Dillsburg Iron Mines, Dillsburg, York County, Pennsylvania, USA
54.8km (34.0 miles) ⓘDillsburg Iron Mines, Dillsburg, York County, Pennsylvania, USA
54.8km (34.1 miles) ⓘBell Mine, Dillsburg Iron Mines, Dillsburg, York County, Pennsylvania, USA
References
Lapham, Davis M., Geyer, Alan R. (1965) Mineral Collecting in Pennsylvania. Bulletin G33 (2nd ed.). Pennsylvania Geological Survey
Econ Geol (1985) 80:418-443
 
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