Mine detail: Hoffma* Quarry

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Location: Philadelphia County, Pennsylvania, United States, North America
Lat / long: 40.01668, -75.08294
dep_id: 10008872
mrds_id: D001351
Commodity type: metallic
Major mineral: Tungsten
Operation type: Unknown
Production size: No production occurred
Development status: Occurrence
ore: Scheelite
Reporter: Elliott, James E.
hrock_type: Gneiss
References:
  • Deposit:: LEMMON, D.M., UNPUBLISHED DATA.
  • Deposit:: LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP, MR-25.
  • Deposit:: BASCOM, F., ET AL., 1909, USGS GEOL. ATLAS, FOLIO 162.
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