Reconnaissance geochemistry of some rocks of the Guanajuato Mineral District, México

Abstract

Instrumental neutron activation analysis has been used to determine the concenttation of sorne 16 elements (Na, K, Rb, Cs, Ba, Th, Fe, Se, Co, Cr, La, Eu, Zr, Hf, Ta and Sb) in rocks of the Guanajuato Mineral District, Mexico. Analysis of U.S.G.S. standard rocks shows that the method is quite reliable to study the geochemistry of rock formations. These results are discussed in the light of the known geology. and their bearing on the petrogenetic relationships has been pointed out.