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个旧锡多金属矿床是举世瞩目的特大型锡矿床之一.前人对花岗岩的岩石、矿物、地质地球化学和矿床学做了大量的工作,积累了30多个K—Ar年龄和140多个硫同位素组成的数据.为进一步确定个旧含锡花岗岩的成因、成岩时代、岩浆演化、矿床成因、磷灰石的锶同位素地球化学特征以及Sr、Pb同位素特征用作找矿标志的可能性,自1981年以来,作者与西南冶金地质勘探公司308队协作,着重开展了Rb—Sr年代学和Sr、Pb同位素地质学方面的研究,现将部分实验结果综述于后.
The Gejiu-tin polymetallic deposit is one of the most notable extra-large tin deposits in the world, and predecessors have done a great deal of work on granite’s rocks, minerals, geochemistry and mineralogy, accumulating more than 30 K-Ar ages and more than 140 Sulfur isotope composition data.To further determine the Gejiu tin-bearing granite genesis, diagenetic age, magmatic evolution, the genesis of the deposit, the strontium isotope geochemical characteristics of apatite and Sr, Pb isotopic characteristics as a prospecting indicator of the possibility of Since 1981, the author has collaborated with the 308 team of Southwest Metallurgical Geological Exploration Company to focus on the research of Rb-Sr geochronology and Sr and Pb isotopic geology. Some experimental results are summarized below.