Gallium (Ga) concentrations for bauxite deposits worldwide have been compiled from the literature to provide a basis for research regarding the occurrence and distribution of Ga worldwide, as well as between types of bauxite deposits. In addition, this report is an attempt to bring together reported Ga concentration data into one database to supplement ongoing U.S. Geological Survey studies of critical mineral resources. The compilation of Ga data consists of location, deposit size, bauxite type and host rock, development status, major oxide data, trace element (Ga) data and analytical method(s) used to derive the data, and tonnage values for deposits within bauxite provinces and districts worldwide. The range in Ga concentrations for bauxite deposits worldwide is <10 to 812 parts per million (ppm), with an average of 57 ppm. Gallium concentrations in lateritic bauxites range from below detection (< 8 ppm) to 146 ppm; the average concentration is 57 ppm Ga. The average Ga concentration for karst bauxite deposits is 58 ppm with a range between <10 to 180 ppm Ga. As a result, there are no substantial differences in gallium concentrations between karst-and laterite-type bauxites. We calculate the range in geologically available Ga in bauxite deposits worldwide between 30 and 82,720 metric tons (t), with an average of 14,909 t.
Division; available at http://periodic.lanl.gov/images/periodictable.pdf.Cover. Stillwater Mine in south-central Montana, looking southeast. The pond is the tailings impoundment. The buildings in the lower left include the shaft, the mill complex, and offices. Photograph by Michael L. Zientek, 2006.
Division; available at http://periodic.lanl.gov/images/periodictable.pdf. Cover.Upper left, nodule of fluorite, opal, and quartz that contains about 1 percent beryllium as bertrandite. Photograph from Foley and others (2012). Lower left, lithium-cesium-tantalum-type pegmatite that shows typical green coloration in an assemblage of quartz and mica. Photograph from USGS archive. Upper right, beryllium metal is used to make mirrors of powerful telescopes. Photograph courtesy of Ball Aerospace. Lower right, beryllium-copper alloys are used to make contacts and connectors, switches, relays, and shielding for everything from cell phones and computers to thermostats, high-definition televisions, and automobiles, as well as electrical connectors necessary for next-generation Thermal Ionization Mass Spectrometers, and electrical contacts in cell phones and computers. Photograph courtesy of Spectromat Massenspektrometer GmbH. BerylliumBy Nora K. Foley, Brian W. Jaskula, Nadine M. Piatak, and Ruth F. Schulte Chapter E of Critical Mineral Resources of the United States-Economic and Environmental Geology and Prospects for Future SupplyEdited by Klaus J. Schulz, John H. DeYoung, Jr., Robert R. Seal II, and Dwight C. Bradley For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit https://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit https://store.usgs.gov/.Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.Suggested citation: Foley, N.K., Jaskula, B.W., Piatak, N.M., and Schulte, R.F., 2017, Beryllium, chap. E of Schulz, K.J., DeYoung, J.H., Jr., Seal, R.R., II, and Bradley, D.C., eds., Critical mineral resources of the United States-Economic and environmental geology and prospects for future supply: U.S. Geological Survey Professional Paper 1802, p. E1-E32, https://doi.org/ 10.3133/pp1802E. Supplemental InformationSpecific conductance is given in microsiemens per centimeter at 25 degrees Celsius (µS/cm at 25 °C). Activities for radioactive constituents in air are given in microcuries per milliliter (µCi/mL). ConcentrationsDeposit grades are commonly given in percent, grams per metric ton (g/t)-which is equivalent to parts per million (ppm)-or troy ounces per short ton (oz/T).Geologic ages are expressed in mega-annum (Ma, million years before present, or 10 6 years ago) or giga-annum (Ga, billion years before present, or 10 9 years ago).For ranges of years, "to" and (or) the en dash ("-") mean "up to and including." Concentration unit Equals AbstractBeryllium is a mineral commodity that is used in a variety of industries to make products th...
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