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Characterization of Ketchem Dome Tin Prospect, East-Central Alaska
  • Published Date:
    1/1/1987
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Characterization of Ketchem Dome Tin Prospect, East-Central Alaska
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  • Personal Authors:
  • Description:
    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 (Sn02), which occurs as grains disseminated in a greisen (quartz-mica) matrixo 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.

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    National Institute for Occupational Safety and Health
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