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Mine detail: Hoffma* Quarry
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North America
United States
Pennsylvania
Philadelphia
Previously called ''
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Location
Lat / long:
40.01668, -75.08294
Resource(M)
Primary:
Tungsten
Ore:
Scheelite
Production
Operation type:
Unknown
Production size:
None
Development status:
Occurrence
Geology
Host type:
Gneiss
References
MRDS
D001351
DEP
10008872
Reference
{Deposit:: LEMMON, D.M., UNPUBLISHED DATA.}{Deposit:: LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP, MR-25.}{Deposit:: BASCOM, F., ET AL., 1909, USGS GEOL.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.}
Reporter
Elliott, James E.