Artillery peak orientation study, Mohave County, Arizona

Abstract

We present the results of an orientation study of uranium concentrations in the Artillery Peak quadrangle, Arizona, a part of the Prescott 10 X 2* quadrangle of the National Topographic Map Series (NTMS). Uranium concentrations, as well as those of 25 other elements, were measured by neutron activation analysis of wet, dry, and rock samples collected throughout the region. Uranium is found in veins and disseminations in the Precambrian rocks and in carbonaceous, tuffaceous lacustrine rocks of the Tertiary Artillery Formation. Data suggest that uranium is associated with resistate mineral phases. Data also show that stream sediments samples may not be an accurate way to determine uranium concentrations in poorly exposed lacustrine deposits similar to those in the Artillery Formation. Analytical data and field measurements are presented in tabular hardcopy and fiche format; full-size overlays are included for use with the Artillery Peak NTMS Quadrangle map and show water sample sites, water-sample uranium locations, sediment sample sites, and sediment-sample total uranium concentrations.