California · San Bernardino County
Past Producer

Pacific Mine

San Bernardino County, California, United States
Boron-BoratesStrontiumGypsum-Anhydrite
⌖ Show on mapUSGS source ↗
Commodities
PrimaryBoron-Borates
TertiaryStrontium, Gypsum-Anhydrite
Commodity typeN
Deposit
Deposit sizeS
Materials
Ore mineralsColemanite
GangueCalcite, Celestite, Gypsum
Geology
Host rockShale,Limestone · Barstow Formation
Associated rockVolcanic Breccia (Agglomerate)
StructureNumerous Faults, Sediments Are "Severely Folded"
Economic & production
Development statusPast Producer
Production years1884-1907
First production1884
Discovery year1882
Identification
Deposit ID10102220
MRDS IDI003023
Alternate namesBorate, Old Borate, Calico
RegionNA
Data scoreB
Coordinates34.95001, -116.81754
References
CAMPBELL, M.R., 1902, RECONNAISSANCE OF THE BORAX DEPOSITS OF DEATH VALLEY AND MOHAVE DESERT: U.S. GEOLOGICAL SURVEY BULLETIN 200, 23 P.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.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.LYDAY, P.A., 1992, HISTORY OF BORON PRODUCTION AND PROCESSING: INDUSTRIAL MINERALS, NO. 303, P. 19-37.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.YALE, C.G., 1904, BORAX, IN MINERAL RESOURCES OF THE US - 1903: WASHINGTON, D.C., U.S. GEOLOGICAL SURVEY, P. 1017-1028.