Active-, inactive-, and abandoned-mine information and selected geochemical data for the State of Colorado

Source, transport, and partitioning of metals between water, colloids, and bed sediments of the Animas River, Colorado

“…Mining continued in the Animas River watershed at various levels of activity until 1991 when the Sunnyside Mine was closed. (Ryder, 1994) and the USBM MAS data base (Babitzke and others, 1982). The digital elevation model data are from USGS (1990), towns, railroads, and roads are from ESRI (1992), and the hydrology data are from USGS (1989).…”

“…The extent of mining activity within various portions of the Animas River watershed can be estimated from the distribution of mining claims and Minerals Availability System (MAS) records (Babitzke and others, 1982) within the basin. In figure 2, plots of the geochemical data from the USGS mines data bases (Ryder, 1994) are indicative of the density of mines and prospects in the Animas River drainage basin above Silverton, Colo. Mineral deposits in several major mining districts have recorded production.…”

Geochemical and isotopic data from streambed sediment, Animas River watershed, Colorado, 1995-1999

“…__________ Figure 1. Map of the Animas River watershed (from Church and others, 1997) showing elevation and mine localities from the USGS MRDS, RASS, and PLUTO databases (Ryder, 1994) and the USGS MAS database (Babitzke and others, 1982;McFaul and others, 2000). The digital elevation model data are from USGS (1990), towns, railroads, and roads are from ESRI (1992), and the hydrology data are from USGS (1989).…”

Geochemical and lead isotopic data from sediment cores, fluvial tailings, iron bogs, and pre-mining terrace deposits, Animas River watershed, Colorado, 1995-1999

“…Paleozoic, Mesozoic, and Cenozoic sedimentary rocks are exposed in the southern part of the drainage basin. The headwaters of the Animas River watershed are underlain by the Tertiary igneous intrusive and volcanic rocks Church and others, 1997) showing elevation and mine localities from the USGS MRDS, RASS, and PLUTO databases (Ryder, 1994) and the USGS MAS database (Babitzke and others, 1982;McFaul and others, 2000). The digital elevation model data are from USGS (1990), towns, railroads, and roads are from ESRI (1992), and the hydrology data are from USGS (1989).…”