安家营子金矿田矿床及同源岩体同位素地球化学
THE ISOTOPIC GEOCHEMISTRY OF ORE DEPOSITS AND COGNATE ROCKS IN ANJIAYINGZI GOLD FIELD
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摘要: S、Pb、C、O和H同位素研究表明,安家营子矿田金矿成矿物质主要来自深部岩浆源,成矿流体为再平衡岩浆水.与金矿有关的安家营子二长花岗岩体为下地壳重熔成因,属金铜系列花岗岩类.金矿成矿年龄为120~130Ma.Abstract: Study on the S,Pb,C,O,H and Sr isotopes shows that:(1)the ore-forming substances of Anjiayingzi gold field were mianly derived from deep magmatic source;(2)the ore-forming fluid was re-equilibrated magmatic water;and(3)Anjiayingzi adamellite mass related to gold deposits was derived from remelting lower crust rocks,it should belong to Au-Cu series granitoid.The minerogenetic ages of gold deposits are 120~130Ma.