Latitude: 39°44'0"N
Longitude: 76°11'30"W
Ref.: Annotated Bibliography of Minerals New to the Pennsylvania List - 1965-1974, Reed, Juliet C., Min. Soc. of PA, Inc. (1976): 14; Grant, Raymond W. (Feb & Mar 1973) "Revised PA Mineral Lists and Index", PM (122 & 123), Keystone Newsletter; Montgomery (Feb 1966), "Updated List of PA Minerals in PM (38). A quarry in chlorite schist of the Wissahickon Formation (Precambrian or Early Paleozoic).
Mineral List
2 entries listed. 1 valid mineral.
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