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Biotite from
South Royalston beryl locality (Clarke locality), Royalston, Worcester Co., Massachusetts, USA

Description
Quality of samples:	not specified / average specimens
Confirmation
Validity:	Believed Valid
References
References:	Billings, Marland P. (1941): Pegmatites of Massachusetts. (Prepared under a cooperative project for geologic investigations in the Commonwealth of Massachusetts)
Data
Mineral Data:	Click here to view Biotite data
Locality Data:	Click here to view South Royalston beryl locality (Clarke locality), Royalston, Worcester Co., Massachusetts, USA

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