Smedley's asbestos mine

past producer of asbestos in Delaware county, PA

Geologic information

Name of siteSmedley's asbestos mine
Developmentpast producer
StatePA
CountyDelaware
Geographic location:-75.399, 39.94
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Fibrous mineralamphibole asbestos
Associated mineralsserpentine
enstatite
anthophyllite
chlorite
Host rock typesmetapyroxenite
Geologic map unit-75.399, 39.94
Nearby scientific dataFind additional scientific data near this location

Reference information

Rand, T.D., Jefferis, W.W., and Cardeza, J.T.M., 1893, Mineral localities of Philadelphia and vicinity: Proceedings of the Academy of Natural Sciences of Philadelphia--1892, v. 44, p. 174-202.
Gordon, S.G., 1922, The mineralogy of Pennsylvania: The Academy of Natural Sciences of Philadelphia Special Publication No. 1, 255 p.
Pearre, N.C., and Heyl, A.V., Jr., 1960, Chromite and other mineral deposits in serpentine rocks of the Piedmont Upland, Maryland, Pennsylvania, and Delaware: U.S. Geological Survey Bulletin 1082-K, p. 707-833, plates 40-47.
[http://pubs.er.usgs.gov/publication/b1082K]
Mitchell, J.R., 1999, Some little-known history of a Pennsylvania amethyst occurrence--Rediscovering Smedley's last amethyst mine: Matrix, v. 7, no. 4, p. 167-176.