甘肃拾金坡金矿床地质特征及成矿作用  

Geologecal features and mineralization of Shijinpo gold deposit in Gansu Province

作　　者：辛存林[1,2] 孙柏年[1] 张祥年 康鸿杰[1] 孟键[2] 张玉龙 

机构地区：[1]兰州大学资源环境学院,兰州730000 [2]西北师范大学地理与环境科学学院,兰州730070 [3]甘肃省地质矿产调查院,兰州730000 [4]甘肃省核工业地质局,兰州730000

出　　处：《兰州大学学报（自然科学版）》2009年第1期1-7,共7页Journal of Lanzhou University(Natural Sciences)

基　　金：国家自然科学基金项目(40372012);甘肃省自然科学基金项目(ZS031-A25-002-Z);西北师范大学青年教师科研基金项目(NWNU-QN-04-32)

摘　　要：拾金坡金矿床产于拾金坡复式花岗岩体内,受东西向次级断裂构造控制,具有强烈的绢云母化、碳酸盐化、硅化和黄铁矿化蚀变特征.岩体、构造、热液控制金的富集与成矿.据矿体产出地质特征、成矿作用和金属矿物组合判断,该矿为含金石英脉型,属中温热液型金矿,成矿时代属海西中晚期.Shijinpo Gold Mine exists in a composite garanite body of Shijinpo and is obviously controlled by faults of a EW strike. It has the alteration characteristics of strong sericitization, carbonation, silicifichtion and pyritation. The three elements of rock body, tectonic structure and hydrothermal control have led to the enrichment and mineralization. According to the geological features of deposit＇ occurrence, mineralization and the combination characteristics of metal minerals, this gold deposit belongs to the type of gold-containing quarts vein. It is a gold deposit of the middle temperature-hydrothermal type and its mineralization occurred during the middle-late hercynian.

关 键 词：拾金坡金矿床 石英脉型 成矿作用 

分 类 号：P618.51[天文地球—矿床学]