Mine detail: Kramer Borate Deposit

Previously called 'KramerBoron PitBoron MineU.S. Borax and Chemical Corporation MineDiscovery ShaftOsborne ShaftBakerWest BakerJenifer'

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Location

Lat / long: 35.04111, -117.68811

Resource(B)

Primary: Boron-Borates
Tertiary: Antimony, Bentonite, Arsenic
Ore: Borax, Colemanite, Kernite, Tincalconite
Gangue: Arsenic, Bentonite, Calcite, Clay, Feldspar, Mica, Realgar, Stibnite, Sulfur
Orebody form: OTHER: LENTICULAR
Discovery year: 1913

Production

Operation type: Unknown
Production size: Large
Development status: Producer
Production years: 1927- PRESENT
First production started: 1927

Geology

Host rock:Ricardo Formation
Host type:Claystone,Shale,Sandstone,Volcanic Ash
Associated rock:Saddleback Basalt
Associated type:Basalt
Structure:Downwarped Ancient Lakebed, Folded And Faulted, Structural Basin, Portal Fault (Strikes West)
Tectonic:West Central Mojave Desert
Alteration processes:Fresh Borax Is Altered To Tincalonite By Exposure To Air.

References

MRDSW031570
DEP10080426
Reference{Deposit:: U.S. BUREAU OF MINE*MINERALS YEARBOOK, 1978-1979, VOL. 1, P 120.}{Deposit:: SMITH, W.C., 1968, BORAX SOLUTION AT KRAMER, CALIFORNIA, ECONOMIC GEOLOGY, VOL. 63, NO. 2, P. 877 - 883.}{Deposit:: NOBLE, L.F., 1926, BORATE DEPOSITS IN THE KRAMER DISTRICT KERN COUNTY, CALIFORNIA, USGS BULLETIN 785-C, P. 45 - 61.}{Deposit:: SCHALLER, W.T., 1929, BORATE MINERALS FROM THE KRAMER DISTRICT, MOJAVE DESERT, CALIFORNIA, USGS PROFESSIONAL PAPER 158, P. 137 - 170.}{Deposit:: OBERT, L., AND LONG, A.E., 1962, UNDERGROUND BORATE MINING, KERN COUNTY, CALIFORNIA, USBM REPORT OF INVESTIGATIONS 6110, P. 1 - 12.}{Deposit:: VER PLANK, W.E., 1962, KRAMER BORATE DISTRICT, CALIFORNIA DIVISION OF MINES AND GEOLOGY COUNTY REPORT 1, P. 39 - 40.}{Deposit:: *RISCOLL, MIKE, 1990, MINERALS IN THE US SOUTH-WEST--BREAKING ROCKS IN THE HOT SUN: INDUSTRIAL MINERALS, NO. 272, P. 56, 59.}{Deposit:: KISTLER, R.B., AND SMITH, W.C., 1975, BORON AND BORATES, IN LEFOND, S.J., ED., INDUSTRIAL MINERALS AND ROCKS (NONMETALLICS OTHER THAN FUELS): NEW YORK, AMERICAN INSTITUTE OF MINING, METALLURGICAL, AND PETROLEUM ENGINEERS, INC., P. 473-496.}{Deposit:: ROSKILL INFORMATION SERVICES LTD., 1993, THE ECONOMICS OF BORON 1993, 7TH ED.: LONDON, ROSKILL INFORMATION SERVICES LTD., 156 P.}{Deposit:: SMITH, G.I., 1985, BORATE DEPOSITS IN THE UNITED STATES - DISSIMILAR IN FORM, SIMILAR IN GEOLOGIC SETTING, IN BARKER, J.M., AND LEFOND, S.J., EDS., BORATES: ECONOMIC GEOLOGY AND PRODUCTION: NEW YORK, AMERICAN INSTITUTE OF MINING, METALLURGICAL AND PETROLEUM ENGINEERS, INC., P. 37-51.}{Other Database:: CIMRI}{Production:: WORLD MINING DEVELOPMENTS 1979-80, P. 419.}{Reserve-Resource:: KISTLER AND SMITH, 1985; ROSKILL, 1993.}
ReporterZigler, Jan L. (Huber, Donald F.), Orris, Greta J., Langford, R.P., Mosier, Dan