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Black Sand Survey Along the Pacific Coast.
5th Annu Conf Alaskan Placer Mining Miner Ind Res Lab Rep 1983 (68):49-52
The Bureau of Mines investigated the occurrence and recovery of byproduct gold and heavy minerals from west coast sand and gravel operations. Heavy mineral (black sand) concentrates were prepared from sand samples from 150 locations. Magnetite, ilmenite, zircon, chromite, rutile, radioactive minerals, platinum-group minerals, and gold were identified in many of the concentrates. Individual magnetite, ilmenite, zircon, chromite, rutile, thoria, platinum- group minerals, and gold products were prepared from selected concentrates. Low- and high-intensity magnetic, electrostatic, flotation, and amalgamation techniques were used to beneficiate the black sands.
Issue of Publication
5th Annu. Conf. Alaskan Placer Mining, Miner. Ind. Res. Lab. Rep. No. 68, 1983, Pp. 49-52
Page last reviewed: March 11, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division