|Statement||by Donald M. Lance, Jr.|
|The Physical Object|
|Pagination||xv, 167 leaves :|
|Number of Pages||167|
The Midnite mine is one of only two mines in the United States currently producing uranium from discordant deposits in crystalline host rocks. Ore bodies are in metamorphosed steeply dipping Precambrian pelitic and calcareous rocks of a roof pendant adjacent to a Cretaceous(?) porphyritic quartz monzonite pluton. Production during 14 years, of operation has been about 8 million pounds of U3O8. "The Midnite Mine is an inactive, hardrock uranium mine on the Spokane Indian Reservation, Stevens County, Washington. Oxidation of sulfide-containing minerals, primarily pyrite, in the ore body produces large quantities of acidic by: 6. Midnite Mine is an inactive former uranium mine in the Selkirk Mountains of eastern Washington. Located within the reservation of the Spokane Tribe of Indians, the mine was operated from until Two open pits, backfilled pits, and a number of waste . Bedrock geology of about 12 km2 near the Midnite mine has been mapped at the surface, in mine exposures, and from drilling, at scales from to , and is presented here at , to provide description of the setting of uranium deposits. Oldest rocks in the area are metapelitic and metacarbonate rocks of the Precambrian (Y) Togo Formation.
is on the Spokane Indian Reservation, Stevens County, Washington, about 65 km northwest of Spokane (fig. 1). It is tn the Turtle Lake minute quadrangle, the geology of which was mapped at , by Becraft and Weis (). The Midnite mine ts operated by the Dawn Mining Co., jointly owned by Newmont Mining Corp. and Midnite Mines, Inc. uranium into deposits of the Midnite mine, Stevens County, Washington, by J. Thomas Nash 33 Conceptual-mathematical models of uranium ore forma¬ tion in sandstone-type deposits, by Joel S. Leventhal and Harry C. Grangei 34 Geology of uraniferous Tertiary rocks in the Artillery Peak-Date Creek basin, west-central Arizona, by James K. Otton Determination of premining geochemical background and delineation of extent of sediment contamination in Blue Creek downstream from Midnite Mine, Stevens county, Washington. Geochemical and radionuclide analyses of surface samples and cores taken near the outflow of this old uranium mine. Info. The majority of exploration has occurred in areas adjacent to the Spokane Indian Reservation, in southwest Stevens County, and further to the ^t--H * 21 FIVE YEAR MINERAL PROGRAMS FORECAST northeast in the Pend Oreville Valley in Pend Oreville County (Babitzke, ). The Midnite Mine and nearby uranium occurrences are associated with the.
Geology of the Midnite uranium mine, Stevens County, Washington: A preliminary report (Open-file report / Dept. of the Interior, United States Geological Survey) [J. Thomas Nash] on *FREE* shipping on qualifying offers. The Midnite Mine is an inactive, hardrock uranium mine on the Spokane Indian Reservation, Stevens County, Washington. Oxidation of sulfide-containing minerals, primarily pyrite, in the ore body produces large quantities of acidic water. An interception system installed by the mining company limits the discharge of contaminated water from the mine. Acidic mine water is more likely to contain heavy metals (e.g., iron, manganese, aluminum, copper, chromium, zinc, lead, vanadium, cobalt, or nickel) or metalloids (e.g., selenium or arsenic) released into solution by oxidation of the sulfide minerals, in addition to radionuclides in the uranium ( U) decay series (i.e., uranium, radium. Geochemistry of biotite from a part of the Loon Lake batholith and its relationship to uranium mineralization at Midnite uranium mine, Stevens County, Washington. M.S. Thesis, Eastern Washington University, Cheney, pp. Asmerom, Y. and Ikramuddin, M.,