Browsing by Subject "Copper sulfides"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Duluth Complex Mineral Separations
    (University of Minnesota Duluth, 2001) Niles, Harlan B
    The Minerals Division of the Minnesota Department of Natural Resources (DNR) is examining leaching characteristics of minerals that would likely be present in tailing produced by mining and concentrating copper- and nickel sulfide-bearing ores from the Duluth Complex. The Coleraine Minerals Research Laboratory (CMRL) of the Natural Resources Research Institute submitted a project proposal to provide concentrates of silicate minerals for DNR leaching studies. The DNR accepted the proposal and funded the project for $14,210.
  • Thumbnail Image
    Item
    Metallurgical Testing of Copper-Nickel Bearing Material from the Duluth Gabbro
    (University of Minnesota Duluth, 1998-12) Benner, Blair R; Engesser, John; Niles, Harlan B