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Mineral Sampling in the Western Portion of the Sound Study Area, Chugach National Forest, Alaska.
For Reference Only At Bureau Libraries :104 pages
Eight previously reported prospects, eight previously unreported mineral occurrences, and one placer occurrence were located, mapped, and sampled by the Bureau of Mines during the 1979-82 roadless area review and evaluation II mineral appraisal of the western portion of the sound study area of the Chugach National Forest, AK. Copper, lead, gold, silver, nickel, cobalt, fluorite, and arsenic were found in the north-northeast to north-northwest trending shear zones, veins, Felsic dikes, and granitic intrusives in Tertiary orca group metasedimentary rocks. Previous unreported mineralization was in Long Bay, Wells Bay, and Miners River, as discovered. Of special interest were higher concentrations of lead, fluorine, and arsenic that had been previously reported in the Orca Group.
For Reference Only At Bureau Libraries
Alaska Field Operations Center
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division