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Kramer Borate Deposit (Boron Mine; Baker; Boron Pit; Kramer; Jenifer; West Baker; U.S. Borax and Chemical Corporation Mine; Osborne Shaft; Discovery Shaft), Kramer District, Kern Co., California, USA

REF:Deposit:: U.S. BUREAU OF MINES' 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:: O'DRISCOLL, 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.
Commodities (Major) - Boron-Borates; (Trace) - Arsenic, Antimony, Clay - Bentonite
Development Status: Producer
Deposit Model: 260: Lacustrine borates
Host Rock Unit: Tank Hill Limestone
Structure: Downwarped Ancient Lakebed, Folded And Faulted, Structural Basin, Portal Fault (Strikes West)
Host Rock: Shale, Claystone, Sandstone, Volcanic Ash
Tectonic Structure: West Central Mojave Desert





Map Reference: 35°2'28"N , 117°41'14"W

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Mineral List:
  • Albite
  • Analcime
  • Anorthite
    var: Labradorite
  • 'Apatite'
  • Aragonite
  • Arsenic
  • Arsenolite
  • Augite
  • Baryte
  • Barytocalcite
  • 'Bentonite'
  • Berthierite
  • Biotite
  • Borax
  • Calcite
  • 'Chlorite Group'
  • 'Clay'
  • 'Clinoptilolite'
  • Colemanite
  • Copiapite
  • Dolomite
  • Epidote
  • Epsomite
  • 'Erionite'
  • 'Feldspar Group'
  • 'Garnet Group'
  • Garrelsite
  • Gerstleyite
  • Greigite
  • Gypsum
  • Halite
  • Hematite
  • Hisingerite
  • 'Hornblende'
  • Howlite
  • Hydroboracite
  • Hypersthene
  • Illite
  • Ilmenite
  • Inderite
  • Inyoite
  • Kaolinite
  • Kernite
  • Kurnakovite
  • Lepidocrocite
  • Limonite
  • Mackinawite
  • Magnetite
  • Meyerhofferite
  • 'Mica Group'
  • Microcline
  • Mirabilite
  • 'Monazite'
  • Montmorillonite
  • Muscovite
  • Natrojarosite
  • Natrolite
  • 'Olivine'
  • Opal
  • 'Phillipsite'
  • Phlogopite
  • Probertite
  • Pseudobrookite
  • Pyrite
  • Pyrrhotite
  • Quartz
  • Realgar
  • Rhodochrosite
  • Rutile
  • Sassolite
  • Searlesite
  • Sideronatrite
  • Smythite
  • Stibnite
  • Strontianite
  • Sulphur
  • Thenardite
  • Tincalconite
  • Titanite
  • 'Tourmaline Group'
  • Tridymite
  • Tunellite
  • Ulexite
  • Witherite
  • Zircon


    85 entries listed. 67 valid minerals.

    The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database!
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