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Line pit (Lowe's Chromite Mine), Fulton Township, State Line Chromite District, Lancaster Co., Pennsylvania, USA

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Latitude & Longitude (WGS84): 39° 43' 15'' North , 76° 10' 18'' West
Latitude & Longitude (decimal): 39.72111,-76.17167
GeoHash:G#: dr1cfxj2p
Locality type:Pit
Köppen climate type:Cfa : Humid subtropical climate

A chromite mine located on the state line between Pennsylvania and Maryland, located in both Fulton Township, Lancaster County Pennsylvania and Cecil County Maryland.

The Discovery shaft located in Pennsylvania gave access to a stringer of massive granular chromite in serpentine rock. Open pit mining was conducted in the area straddling the state line, with underground working extending into Cecil Co., Maryland. Active mining ceased in 1919.

Note: "Zaratite" from Lancaster Co. was proven to be gaspéite.

Mineral List

20 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleozoic - Proterozoic
252.17 - 2500 Ma

ID: 2824500
Ultramafic Rocks

Age: to Permian (252.17 - 2500 Ma)

Description: Chiefly serpentinite with partly to completely altered dunite, peridotite, pyroxenite, and massive to schistose soapstone; talc-carbonate rock and altered gabbro are common in some bodies.

Lithology: Major:{serpentinite}, Incidental:{dunite, peridotite, pyroxenite, gabbro}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

485.4 - 541 Ma

ID: 3189717
Paleozoic sedimentary and volcanic rocks

Age: Cambrian (485.4 - 541 Ma)

Lithology: Mudstone-carbonate-sandstone-conglomerate

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

This page 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 register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 246.
Pearre, N. C. and Heyl, Jr., A. V (1960) Chromite and other mineral deposits of the Piedmont upland of Maryland, Pennsylvania, and Delaware, U. S. Geological Survey Bulletin 1082 K, p. 707-833.
Smith, II, R. C. and Speer, J. A. (1980), Pennsylvania Minerals VI, Maucherite, Ni11As8, from the State Line District, Lancaster County, Pennsylvania, Friends of Mineralogy Pennsylvania Chapter Newsletter, v. 8, no. 3, p. 7-11 plus addendum in no. 4, p. 6. [Includes X-ray powder diffraction spacing data and electron micrprobe quantitative analyses.]-
Foord, E.E.; Heyl, A.V & Conklin, N.M. (1981): Chromium Minerals at the Line Pit, State Line chromite district, Pennsylvania and Maryland. Mineralogical Record: 12: 149-156.
Garcia-Guinea, J., La Iglesia, A., Crespo-Feo, E., González del Tanago, J., Correcher, V. (2014): The status of zaratite; investigation of the type specimen from Cape Ortegal, Galicia, Spain. European Journal of Mineralogy: 25: 995-1004.

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