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Characterization of Ketchem Dome tin prospect, east-central Alaska.
Dahlin-DC; Brown-LL; Warner-JD
Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 9145, 1987 Jan; :1-11
The Bureau of Mines investigated the Ketchem Dome Tin Prospect in east-central Alaska to evaluate the tin resource. The studies included field investigations, mineralogical characterization, and concentration of the tin-bearing minerals. The tin mineralization consists of cassiterite (sNO2), which occurs as grains disseminated in a greisen (quartz-mica) matrix. A bulk sample from the largest and best-developed greisen vein exposed at Ketchem Dome contained 0.51 pct sn. Concentration of the cassiterite by gravity table methods resulted in a product that contained 56 pct of the tin at a grade of 41.4 pct sn. The mineralization exposed at Ketchem Dome is typical of greisen found in the area and elsewhere in interior Alaska.
Field-tests; Mineralogy; Concentration-composition; Cassiterite; Beneficiation; Tin-ore-deposits; Geological-surveys
IH; Report of Investigations
NTIS Accession No.
Albany, OR: U.S. Department of the Interior, Bureau of Mines, RI 9145
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division