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Feldspar Group from
Griggstown Mine (Franklin Mine), Griggstown, Somerset Co., New Jersey, USA

Description
Comments:	Occasionally occurred as crystals.
Quality of samples:	not specified / average specimens
Confirmation
Validity:	Believed Valid
References
References:	NJ State Geol. Ann. Rpt. (1906):138;The Minerals of NYC & Its Environs, NY Min. Club Bull. Vol. 3, No. 1, Manchester, J.G. (1931): 35. .
Data
Mineral Data:	Click here to view Feldspar Group data
Locality Data:	Click here to view Griggstown Mine (Franklin Mine), Griggstown, Somerset Co., New Jersey, USA

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