Keystone quarry

occurrence of asbestos in Chester county, PA

Geologic information

Name of siteKeystone quarry
Developmentoccurrence
StatePA
CountyChester
Geographic location:-76.0538, 39.7251
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Fibrous mineralclinochrysotile, amphibole asbestos
Associated mineralslizardite
talc
olivine
actinolite
pyroxene
chromite
magnetite
Host rock typesmetaperidotite
Geologic map unit-76.0538, 39.7251
Nearby scientific dataFind additional scientific data near this location

Reference information

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]
Faust, G.T., and Fahey, J.J., 1962, The serpentine-group minerals: U.S. Geological Survey Professional Paper 384-A, 92 p.
[http://pubs.er.usgs.gov/publication/pp384A]
Geyer, A.R., Smith, R.C., II, and Barnes, J.H., 1976, Mineral collecting in Pennsylvania [4th ed.]: Pennsylvania Department of Environmental Resources, Topographic and Geologic Survey, General Geology Report 33, 260 p.
Puffer, J.H., Germine, M., Hurtubise, D.O., Mrotek, K.A., and Bello, D.M., 1980, Asbestos distribution in the Central Serpentine District of Maryland-Pennsylvania: Environmental Research, v. 23, p. 233-246.