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Keystone Mine, Birmingham, Blair Co., Pennsylvania, USA

Host rock is limestone breccia, Trenton Group (?) (Ordovician).

References

Grant, Raymond W. (1974), Keystone Newsletter; Pennsylvania Minerals (PM): 141.

Smith, R.C., II (1974), "Interesting Minerals from PA Zinc-Lead Occurrences," Pennsylvania Geology: 5(3): 9.

Reed, Juliet C. (1976), Annotated Bibliography of Minerals New to the Pennsylvania List 1965-1974, The Mineralogical Society of Pennsylvania, Inc.: 51

Smith, II, R. C. (1977) Zinc and Lead Occurrences in Pennsylvania, Pennslvania Geological Survey, 4th ser., Mineral Resource Report 72, p. 89 - 102.

Smith, II, R. C. (1978) Jordanite chapter in The Mineralogy of Pennsylvania, 1966 - 1975, Special Publication No. 1, Friends of Mineralogy, Pennsylvania Chapter, p. 153 - 155.

Mineral List

Anglesite
Baryte
Baumhauerite
Calcite
Cerussite
Dolomite
Galena
Gypsum
Hydrozincite
Jordanite
Pyrite
Quartz
Sphalerite


13 entries listed. 13 valid minerals.

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