Latitude: 39°43'39"N
Longitude: 76°8'15"W
An aggregate quarry exploiting the serpentinites of the Baltimore Mafic Complex, State Line District.
Operated by D. M. Stoltzfuss & Son, under the name "DM Stoltzfus & Son Cedar Hill Quarry", according to Pennsylvania State Department of Environmental Protection. Produced 731,000 tons of material in 2003.
Mineral List
41 entries listed. 31 valid minerals. 1 type locality (valid mineral).
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please
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References
McKague, H. L. (1964) The geology, mineralogy, petrology, and geochemistry of the State Line serpentinite and associated chromite deposits, unpublished Ph. D. thesis, The Pennsylvania State University, University Park, Pennsylvania. [Forsterite compositions estimated to be Fo95-97 by refractive indicies and Fo 94-95 by X-ray powder diffraction.]
Lapham, Davis M. and Geyer, Alan R. (1965), Mineral Collecting in Pennsylvania: 50, 81; (1969): 52, 87.
Montgomery (Feb 1966), "Updated List of Pennsylvania Minerals in Pennsylvania Minerals (38).
Lapham, Davis M. & Barnes, John H. (1971), "Unusual Minerals Found in PA," PA Geol., Vol. 2(6):2;
Montgomery, Arthur (Sep, 1972), "Pennsylvania Minerals (PM), PM(117), Keystone Newsletter.
Grant, Raymond W. (Feb & Mar 1973) "Revised PA Mineral Lists and Index", PM (122 & 123), Keystone Newsletter;
Reed, Juliet C. (1976), Annotated Bibliography of Minerals New to the Pennsylvania List - 1965-1974, Mineralogical Society of Pennsylvania, Inc.: 14, 41, 47-48.
Smith, II R. C. (1978) Huntite chapter in The Mineralogy of Pennsylvania, 1966-1975, Friends of Mineralogy, Pennsylvania Chapter, Special Publication No. 1, p. 146-148. [Notes confirmation by X-ray powder diffraction by R. W. Grant, Lafayette College, and D. M. Lapham and J. H. Barnes, Pennstylvania Geological Survey.]
Dunn, P.J., D.R. Peacor & T.D. Palmer (1979), Desautelsite, a new mineral of the pyroaurite group: American Mineralogist: 64: 127-130.
Smith, II, R. C. and Speer, J. A. (1980) Pennsylvania Minerals V: Heazlewoodite, Ni3S2, verified from Lancaster County, Keystone Newsletter of the Mineralogical Society of Pennsylvania, January, 1980, p. 5-8. [Heazlewoodite confirmed by ore microscopy, X-ray powder diffraction including determination of the unit cell, and quantitative electron microprobe analyses.]
Rocks & Minerals (1985): 60: 243.
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