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Muscovite from
Grace Mine, Morgantown, Berks Co., Pennsylvania, USA

Description
Quality of samples:not specified / average specimens
Confirmation
Validity:Believed Valid
References
References:Mineral collecting in Pennsylvania, 1965 - Lapham & Geyer, pg. 130
Data
Mineral Data:Click here to view Muscovite data
Locality Data:Click here to view Grace Mine, Morgantown, Berks Co., Pennsylvania, USA
Mineral and/or Locality
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