摘要
东安金矿床是浅成低温热液型金矿床,赋存于中酸性火山-侵入岩、印支晚期碱长花岗岩和燕山晚期细粒碱长花岗岩脉强硅化蚀变带中,受库尔滨断裂的次级断裂控制。岩石地球化学显示,金来源于深部岩浆。氢氧同位素结果表明,流体中的水主要来自岩浆水和大气水。流体包裹体研究结果显示,该矿床成矿温度为144～348℃,成矿深度为0.2～1.0km。同位素地质年代测试结果证实,矿床形成于燕山晚期。
Dongan gold deposit is a epithermal gold deposit occurring in the strong silicification zone of Late Indosinian alkali feldspar granite and Late Yanshanian fine-grained alkali feldspar granite in the intermediateacidic volcanic-intrusive rock. It is controlled by sub-fault of Kuerbin crust fault. According to lithogeochemical data and H,O isotopic data gold is mainly derived from the deep-sourced magma and water of the ore fluid from magmatic water and meteoritic water.Fluid inclusion data show that ore is formed in the temperature range of 144-349℃ and pressure 48.75×10^5-382.88×10^5 Pa at depth of 0.2-1.0 km.The isotope age is correspondent to Late Yanshanian Period.
出处
《地质找矿论丛》
CAS
CSCD
2006年第2期95-99,共5页
Contributions to Geology and Mineral Resources Research
作者简介
刘智明（1965-），男，内蒙古丰镇人，硕士研究生，高级工程师，1990年毕业于桂林冶金地质学院化探系，从事矿产地质勘查与研究工作。
