|U.S. Geological Survey Open-File Report 01-0003|
Geochemical Data for Historic Mining Areas, Central Western Slope, Colorado By J. Thomas Nash, Warren C. Day, and Anna B. Wilson
This report contains the analytical results for samples collected at 451 sites on the Central Western Slope of Colorado, including the Gunnison and Uncompahgre National Forests and adjacent public lands administered by the Bureau of Land Management. Included are results for 190 samples of surface waters, 185 samples of mined rocks, mill tailings, and altered rocks, and passive leach analyses of 116 samples of those mineralized materials, and 65 samples of host rocks. These geochemical analyses are part of studies designed to improve the understanding of known ore deposit types and to characterize the geochemical signature of historic mines and their host rocks and to determine their actual or potential contamination of surface or ground waters.