论文部分内容阅读
根据桂东南金银矿床成矿地质条件,典型金银矿床的硫、氢、氧、铅同位素、稀土元素、矿物包裹体流作组份和成矿物理化学条件,提出了桂东南金银矿床的混合岩化─岩浆热液型和变质─岩浆热液型的成因类型,并建立了桂东南金银矿床的成矿模式。即地槽发展时期形成矿源层,变质─混合岩化作用促进金银组份活化迁移与初始富集,剥离作用使金银组份再次迁移富集;燕山期构造─岩浆作用成矿。
According to the geological conditions of the gold and silver deposits in the southeastern Guangxi area, the sulfur, hydrogen, oxygen and lead isotopes, the rare earth elements, the fluid inclusions in the typical gold-silver deposits and the physicochemical conditions of mineralization, Rock-magmatic hydrothermal and metamorphic-magmatic hydrothermal types and established the metallogenic model of gold-silver deposits in southeastern Guangxi. That is, the formation of the source rocks during the development of the geosynclinal zone. The metamorphism-mixed lithification promoted the activation and migration of the gold and silver components and the initial enrichment. The stripping effect re-enriched the gold and silver components. The Yanshanian structure-magmatic mineralization.