California · Kern County
Producer

Kramer Borate Deposit

Kern County, California, United States
Boron-BoratesAntimonyBentoniteArsenic
⌖ Show on mapUSGS source ↗
Description

Dr. John K. Suckow

Commodities
PrimaryBoron-Borates
TertiaryAntimony, Bentonite, Arsenic
Commodity typeB
Deposit
Model260: Lacustrine borates
Deposit sizeL
WorkingsSurface/Underground
Orebody formOTHER: LENTICULAR
Ore controlStructural Closed Basin; Presence B-Bearing Thermal Springs During Deposition
Materials
Ore mineralsBorax, Colemanite, Kernite, Tincalconite
GangueArsenic, Bentonite, Calcite, Clay, Feldspar, Mica, Realgar, Stibnite, Sulfur
Geology
Host rockClaystone,Shale,Sandstone,Volcanic Ash · Ricardo Formation
Associated rockBasalt · Saddleback Basalt
StructureDownwarped Ancient Lakebed, Folded And Faulted, Structural Basin, Portal Fault (Strikes West)
Tectonic settingWest Central Mojave Desert
AlterationFresh Borax Is Altered To Tincalonite By Exposure To Air.
Economic & production
Development statusProducer
Production years1927- PRESENT
First production1927
Discovery year1913
Identification
Deposit ID10080426
MRDS IDW031570
Alternate namesKramer, Boron Pit, Boron Mine, U.S. Borax and Chemical Corporation Mine, Discovery Shaft, Osborne Shaft, Baker, West Baker, Jenifer
RegionNA
Data scoreA
Coordinates35.04111, -117.68811
References
U.S. BUREAU OF MINES' MINERALS YEARBOOK, 1978-1979, VOL. 1, P 120.SMITH, W.C., 1968, BORAX SOLUTION AT KRAMER, CALIFORNIA, ECONOMIC GEOLOGY, VOL. 63, NO. 2, P. 877 - 883.NOBLE, L.F., 1926, BORATE DEPOSITS IN THE KRAMER DISTRICT KERN COUNTY, CALIFORNIA, USGS BULLETIN 785-C, P. 45 - 61.SCHALLER, W.T., 1929, BORATE MINERALS FROM THE KRAMER DISTRICT, MOJAVE DESERT, CALIFORNIA, USGS PROFESSIONAL PAPER 158, P. 137 - 170.OBERT, L., AND LONG, A.E., 1962, UNDERGROUND BORATE MINING, KERN COUNTY, CALIFORNIA, USBM REPORT OF INVESTIGATIONS 6110, P. 1 - 12.VER PLANK, W.E., 1962, KRAMER BORATE DISTRICT, CALIFORNIA DIVISION OF MINES AND GEOLOGY COUNTY REPORT 1, P. 39 - 40.O'DRISCOLL, MIKE, 1990, MINERALS IN THE US SOUTH-WEST--BREAKING ROCKS IN THE HOT SUN: INDUSTRIAL MINERALS, NO. 272, P. 56, 59.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.ROSKILL INFORMATION SERVICES LTD., 1993, THE ECONOMICS OF BORON 1993, 7TH ED.: LONDON, ROSKILL INFORMATION SERVICES LTD., 156 P.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.CIMRIWORLD MINING DEVELOPMENTS 1979-80, P. 419.KISTLER AND SMITH, 1985; ROSKILL, 1993.