TY - RPRT TI - Analytical results and sample locality map of stream-sediment, heavy-mineral-concentrate, and rock samples from the Gunnison Gorge Wilderness Study Area (CO-030-388), Delta and Montrose counties, Colorado AU - J. H. Bullock AU - H. N. Barton AU - Paul H. Briggs AU - T. A. Roemer PY - 1989 DO - 10.3133/ofr89439 UR - https://pubs.usgs.gov/publication/ofr89439 ID - ofr89439 ER -