Mine detail: Pacific Mine

Previously called 'BorateOld BorateCalico'

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Location

Lat / long: 34.95001, -116.81754

Resource(N)

Primary: Boron-Borates
Tertiary: Strontium, Gypsum-Anhydrite
Ore: Colemanite
Gangue: Calcite, Celestite, Gypsum
Discovery year: 1882

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer
Production years: 1884-1907
First production started: 1884

Geology

Host rock:Barstow Formation
Host type:Shale,Limestone
Associated type:Volcanic Breccia (Agglomerate)
Structure:Numerous Faults, Sediments Are Severely Folded"

References

MRDSI003023
DEP10102220
Reference{Deposit:: CAMPBELL, M.R., 1902, RECONNAISSANCE OF THE BORAX DEPOSITS OF DEATH VALLEY AND MOHAVE DESERT: U.S. GEOLOGICAL SURVEY BULLETIN 200, 23 P.}{Deposit:: PIPER, J.R., 1985, BORATE DEPOSITS OF THE CLAICO-DAGGETT AREA, CALIFORNIA, IN BARKER, J.M., AND LEFOND, S.J., EDS., BORATES: ECONOMIC GEOLOGY AND PRODUCTION: NEW YORK, SOCIETY OF MINING ENGINEERS OF THE AMERICAN INSTITUTE OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS, INC., P. 147-155.}{Deposit:: RAPP, J.S., AND VREDENBURGH, L.M., 1992, INDUSTRIAL MINERAL RESOURCE POTENTIAL OF TERTIARY PLAYA DEPOSITS OF THE FORT IRWIN AREA, SAN BERNARDINO COUNTY, CALIFORNIA: SOCIETY FOR MINING, METALLURGY, AND EXPLORATION, INC. PREPRINT NUMBER 92-44, 9 P.}{Deposit:: LYDAY, P.A., 1992, HISTORY OF BORON PRODUCTION AND PROCESSING: INDUSTRIAL MINERALS, NO. 303, P. 19-37.}{Deposit:: VER PLANCK, W.E., 1956, HISTORY OF BORAX PRODUCTION IN THE UNITED STATES: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 52, NO. 3, P. 273-191.}{Deposit:: YALE, C.G., 1904, BORAX, IN MINERAL RESOURCES OF THE US - 1903: WASHINGTON, D.C., U.S. GEOLOGICAL SURVEY, P. 1017-1028.}
ReporterOrris, Greta J.