Donnel Foster Hewett

Donnel Foster Hewett (June 24, 1881, Irwin, Pennsylvania – February 5, 1971) was an American geologist and mineralogist, known for his leading role in the 1905 discovery of the Minas Ragra vanadium ore deposit in Peru.[1] This ore deposit was the world's principal source of vanadium for more than 30 years.[2][3] Hewett, with Earl V. Shannon, described and named orientite, a mineral rich in manganese.[4][5]

  1. ^ Hewett, Donnel Foster (1906). "A new occurrence of vanadium in Peru". Engineering and Mining Journal. 82 (9): 385.
  2. ^ Anderson, Charles A. (1973). "Memorial of Donnel Foster Hewett. June 24, 1881 – February 5, 1971" (PDF). American Mineralogist. 58: 367–369.
  3. ^ Gilluly, James (1974). "Donnel Foster Hewett 1881–1971" (PDF). Biographical Memoirs. Washington, D.C.: National Academy of Sciences: 109–126.
  4. ^ Dunn, Pete J.; Ferraiolo, James A. (1984). "Memorial of Earl V. Shannon 1895–1981" (PDF). American Mineralogist. 69: 994.
  5. ^ "Orientite". mindat.org.