Ref.: Rocks & Minerals: 6: 26.
Rocks & Minerals: 10: 33-36, 58.
Grant, R.W. (Jan, 1971), Pennsylvania Minerals (PM)(97), Keystone Newsletter.
Montgomery, A. (Aug, 1972) Pennsylvania Minerals (PM) (116), Keystone Newsletter.
Grant (Feb & Mar 1973) Pennsylvania Minerals (PM) (122 & 123), Keystone Newsletter.
Grant (Sep 1974) Pennsylvania Minerals (PM) (141), Keystone Newsletter.
Reed, Juliet C. (1976), Annotated Bibliography of Minerals New to the Pennsylvania List 1965-1974, The Mineralogical Society of PA, Inc.: 20.
A zinc mine started 1853 and closed 1876. Ultimate closure was 1893. Workings featured a 500 foot diameter pit. Later mined underground as the Friedensville Mine by the New Jersey Zinc Co.
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Map Reference: 40°33'N , 75°24'W
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Mineral List:17 entries listed. 16 valid minerals. 1 type locality (valid mineral).
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