(1993). Maps showing mineral resource assessment for porphyry and stockwork deposits of copper, molybdenum and tungsten and for stockwork and disseminated deposits of gold and silver in the Butte 1 ̊x 2 ̊quadrangle, Montana. U.S. Geological Survey.
Chicago-Zitierstil (17. Ausg.)Maps Showing Mineral Resource Assessment for Porphyry and Stockwork Deposits of Copper, Molybdenum and Tungsten and for Stockwork and Disseminated Deposits of Gold and Silver in the Butte 1 ̊x 2 ̊quadrangle, Montana. Reston, VA: U.S. Geological Survey, 1993.
MLA-Zitierstil (9. Ausg.)Maps Showing Mineral Resource Assessment for Porphyry and Stockwork Deposits of Copper, Molybdenum and Tungsten and for Stockwork and Disseminated Deposits of Gold and Silver in the Butte 1 ̊x 2 ̊quadrangle, Montana. U.S. Geological Survey, 1993.