 Abstract
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.
|
First posted June 3, 2014
- Table (Zip File) XLS (171 KB)
This zip file contains three tables.
Table 1. Compilation of gallium concentrations in global bauxite deposits, with location, deposit size, major oxide data, and tonnage values provided.
Table 2. Ranges and averages of gallium concentrations and calculated tonnages in the major bauxite provinces worldwide, plus average alumina and average total tonnages for deposits.
Table 3. Ranges and averages of gallium concentrations and calculated tonnages for the major bauxite districts worldwide, plus average alumina and average total tonnages for deposits within the bauxite districts. Bauxite districts based on Bogatyrev and Zhukov (2009).
Part or all of this report is presented in Portable Document Format (PDF). For best results viewing and printing PDF documents, it is recommended that you download the documents to your computer and open them with Adobe Reader. PDF documents opened from your browser may not display or print as intended. Download the latest version of Adobe Reader, free of charge.
|
U.S. Department of the Interior |
U.S. Geological Survey