辽西地区金矿床稳定同位素地球化学研究

STUDY ON THE STABLE ISOTOPIC GEOCHEMISTRY OF GOLD DEPOSITS IN WESTERN LIAONING

Study on the Pb, S, H, and O isotope has shown that the ore-forming substances of various types of gold deposits are mainly stemmed from lower crust or its mixture with upper mantle. The ore fluid is the mixture of granitic water (MCW) and phanerozoic meteoric water or the precambrian mixed water by metamorphism-migmatization. The common features of various types of gold deposits in this district are old in age of ore-forming substances and young in metallogenetic process. Comprehensive application of the isotopic information of the pb, S, H, and O may provide important evidence for classification of the genetic types of gold deposits and establish the genetic model of ore-deposits. This made the study important in theoretical significance and practtical utilization.