Mine detail: Brucite Mine

Previously called 'Upper Brucite PitLower Brucite PitMargie Pit'

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Location

Lat / long:

38.86603, -117.89427

Resource(M)

Primary:	Magnesite
Ore:	Brucite, Magnesite
Discovery year:	1927

Production

Operation type:	Unknown
Deposit type:	Replacement
Production size:	Medium
Development status:	Past Producer

Geology

Host rock:	Luning Formation
Host type:	Diorite,Dolomite
Structure:	The Dolomite Of The Luning Formation Is On The Upper Plate Of The Paradise Thrust Fault.
Alteration processes:	Brucite Is Weathered To A Depth Of 50 Ft To Hydromagnesite And Artinite.

References

MRDS	M231591
DEP	10044219
Reference	{Deposit:: VITALIANO, CJ AND CALLAGHAN, E, 1956, GEOLOGIC MAP OF THE GABBS MAGNESITE AND BRUCITE DEPOSITS: USGS MINERAL INV. FIELD STUDY MAP MF-35}{Deposit:: CALLAGHAN, E, 1933, BRUCITE DEPOSIT: NBMG BULL 19.}{Deposit:: SCHILLING, JH, 1968, THE GABBS MAGNESITE - BRUCITE DEPOSIT IN RIDGE, J.D. (EDITOR), ORE DEPOSITS OF THE U.S., 1933-1967, V. 2 (GRATON-SALES VOLUME), NEW YORK, AIMMPE, P. 1607-1622.}{Production:: KRAL, 1951, P. 105}
Reporter	Wong, George (Roberts, Ralph), La Pointe, D.D. (Tingley, J.V.)