Radiometric determination of uranium, thorium and potassium in some rocks of the Guanajuato Mineral district, México.

Abstract

Uranium, Thorium and Potassium contents of some igneous and sedimentary rocks of the Guanajuato Mineral District have been measured by γ-ray scintillation spectrometry. Preliminary measurements show that the area studied is not a province of high radioactive contents. The data obtained for different rocks types is, in general, consistent with what has been found in other areas. The average K/U ratio is close to 1 x 10⁴   and K/Th ratio 3.9 x 10ᶟ in agreement with the figures established in the literature .