Inventory of Significant Mineral Deposit Occurrences in the Headwaters Project Area in Idaho, Western Montana, and Extreme Eastern Oregon and Washington

Earth science studies in support of public policy development and land stewardship — Headwaters Province, Idaho and Montana

“…5, 6). This belt contains the world-class copper deposits of the Butte district and more than 80 deposits designated as economically significant (Long and others, 1998;Spanski, 2004).…”

“…The metal distribution of zinc is similar to that of lead. An estimate of production from lode deposits (current to 1999) is based on available USGS MRDS and MAS databases and data from the CUSMAP (Butte, Dillon, Challis, Hailey-Idaho Falls) and national forest mineral resource assessments (Helena, Salmon, Payette), significant deposits databases (Long and others, 1998), and recent data compiled by Spanski (2004) and Klein (2004). These data indicate that epigenetic deposits in this area have produced more than 21 million troy ounces of gold, nearly 1 billion troy ounces of silver, 11 million tons of copper, nearly 0.5 million tons of molybdenum, 1 million tons of lead, and more than 2.5 million tons of zinc (all 2,000-pound tons).…”

Geology and nonfuel mineral deposits of the United States

“…The diluted proven and probable reserves and inferred resources for their Idaho Cobalt Project are estimated to be 2.86 million metric tons grading 0.602 percent cobalt, 0.45 percent copper, and 0.5 grams per ton gold (Shedd, 2002). Nearby, the Blackbird deposit has resources estimated to be 4.89 million metric tons grading 0.71 percent cobalt and 1.24 percent copper (Spanski, 2004).…”

Mineral Deposit Data for Epigenetic Base- and Precious-metal and Uranium-thorium Deposits in South-central and Southwestern Montana and Southern and Central Idaho

“…Additional mineral production and geologic information were obtained from reports of the Montana Bureau of Mines and Geology and the Idaho Bureau of Mines and Geology, the Securities and Exchange Commission EDGAR database website (http://www.sec.gov/edgar/edgarsearch/webusers.htm), and the many National Forest Wilderness area reports (Table 1) that were completed in the area by the USGS and Mineral Land Assessments (MLA) completed by the U.S. Bureau of Mines in the 1970's and 1980's. Production data from Bliss (1994), Long and others (1998), and Spanski (2004) were used extensively for the economically significant deposits in the study area. Figure 1.…”