Geochemical maps showing distribution and abundance of bismuth and beryllium in the nonmagnetic fraction of stream-sediment concentrates, Silver City 1o x 2o quadrangle, New Mexico and Arizona

Watts, K.C., Hassemer, J.R., Forn, C.L., and Siems, D.F., 1986, Geochemical maps showing distribution and abundance of bismuth and beryllium in the nonmagnetic fraction of stream-sediment concentrates, Silver City 1o x 2o quadrangle, New Mexico and Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1183-H, 1 sheet, scale 1:250,000.