吉林集安西岔金矿床控矿因素及找矿前景

摘要：吉林集安西岔金矿为层控蚀变带型金矿，控矿围岩为石墨黑云母变粒岩，燕山期闪长岩活动是成矿的热动力源。矿体呈脉状、透镜状产出，直接受断裂构造控制，矿石构造以浸染状、脉状为主。文章从矿区、矿床地质特征入手，分析了矿床的控矿因素，认为该矿床受含矿地层、断裂构造、岩浆岩等因素的制约。再结合矿区地球物理及地球化学特征，综合分析认为金家-金厂沟-西岔地段及亮红顶子-复兴屯-南岔地段及西岔金矿床岩体的深部具有很好的找矿前景。

The factors of ore-controlling and Prospecting foreground

Ji’an gold deposit in Ji’an region of Jilin is a stratabound altered belt type gold deposit.Ore-controlling surrounding rock is graphite black mica become grain of rock,diorite activities of Yanshan period is the mineralization of thermal power supply.Ore body in shape,lens shape pulse output,by fracture structure control directly.With the data of geophysical and chemical characteristics,point out main geophysical symbol and chemical symbol of ore-controlling wall-rock.Comprehensive analysis Jinjia-Jinchanggou-Xicha gold deposits and Hongdingzi-Fuxingtun-Nancha copper gold section is the next step of work in the key areas,and Xicha gold deposit’s deep part is a good Prospecting foreground.