TY - RPRT TI - Analytical results for rock samples collected from the Mercur and Ophir mining districts, Utah, the Lookout Pass prospect area, Utah, and the Ferber mining district, Nevada AU - David R. Zimbelman AU - B. F. Arbogast AU - Phil Hageman AU - R. H. Hill AU - D.L. Fey PY - 1991 DO - 10.3133/ofr91349 UR - https://pubs.usgs.gov/publication/ofr91349 ID - ofr91349 ER -