TY - RPRT TI - Map showing distribution of silver in the nonmagnetic fraction of heavy-mineral concentrates, Richfield 1° x 2° quadrangle, Utah AU - William R. Miller AU - Jerry M. Motooka AU - John B. McHugh PY - 1990 DO - 10.3133/mf2137b UR - https://pubs.usgs.gov/publication/mf2137B ID - mf2137B ER -