OF-05-05 Geologic Map of the Almont Quadrangle, Gunnison County, Colorado Download Publication Details Describes the geologic setting and mineral resource potential of this 7.5-minute quadrangle that is centered near the junction of the East, Taylor, and Gunnison Rivers in central Gunnison County, Colorado. The quadrangle lies on the southeastern margin of the Piceance basin between the Elk and West Elk Mountains. Digital PDF Download. OF-05-05D Citations Coogan, James C., Allen Stork, and Robert P. Fillmore. “OF-05-05 Geologic Map of the Almont Quadrangle, Gunnison County, Colorado.” Geologic. Open File Report. Denver, CO: Colorado Geological Survey, Division of Minerals and Geology, Department of Natural Resources, 2005. https://coloradogeologicalsurvey.org/publications/geologic-map-almont-quadrangle-gunnison-colorado.