Fritz Island Mines, Reading, Cumru Township, Berks Co., Pennsylvania, USA
Ref.: Smith, Robert C. II (1978), Mineralogy of Pennsylvania 1966-1975: 135-138, 184-186.
Reed, Juliet C., Annotated Bibliography of Minerals New to the Pennsylvania List - 1965-1974, Mineralogical Society of Pennsylvania, Inc. (1976): 42-43, 53, 61-62.
Gordon, Samuel G. (1922), Mineralogy of Pennsylvania: 153.
Spencer, Arthur C. (1908), Magnetite of the Cornwall type in Pennsylvania, U.S. Geol, Surv. Bull. 259: 38.
Ref.: Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 1067.
Genth, F.A. (1874) Second Geological Survey of Pennsylvania, Mineralogy of Pennsylvania: Pgs. 9, 21, 28, 73, 107, 108, 109, 110, 114, 133, 154, 162, 168, 167.
Located on the Northern end of Fritz Island in the Schuylkill River, 2 miles South of Reading. Triassic diabase intrusive. Open pit with several drifts extending under the Schuylkill to Yost island. Inaccessible.
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Map Reference: 40°18'21"N , 75°55'25"W
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