Description
A. E. Beauregard
Commodities
PrimaryTungsten
TertiaryCopper, Molybdenum
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formIRREGULAR
Ore controlAsymmetrical Anticline That Plunges North; Contact With Pluton.
Materials
Ore mineralsChalcopyrite, Molybdenite, Scheelite
GangueCalcite, Diopside, Epidote, Garnet, Pyrrhotite, Quartz
Geology
Host rockMarble
Associated rockRhyolite
StructureSierra Nevada Batholith
AlterationFormation Of Tactite; Bleaching
Economic & production
Development statusProducer
First production1928
Discovery year1917
Identification
Deposit ID10008717
MRDS IDD001062
RegionNA
Data scoreB
Coordinates37.68327, -118.51762
References
LEMMON, D.M., UNPUBLISHED DATA.LEMMON, D.M., AND TWETO, O.L., 1962, TUNGSTEN IN THE U.S., USGS MAP, MR-25.ELLIOTT, J.E., 1971, THE MINERALOGY AND GEOCHEMISTRY OF THE TUNGSTEN DEPOSITS OF THE BLACK ROCK MINE, MONO COUNTY, CALIF., STANFORD UNIV., UNPUB. PHD THESIS, 131P.1941 DIREXPL USBM1953 GEOLMAP RINEHART AND ROSS, REPT., MAPS.