吉林和龙地区主要金属矿床成矿地质特征及找矿方向

The forming geological characteristics and prospecting direction of the main metal deposits in Jilin and Helong regions in China

和龙地区是吉林省重要的多金属勘查区,近年来发现了众多铁、钼、金、银矿床(点),显示出该区良好的找矿潜力。根据目前已发现矿床(点)的地质特征,划分出6类主要矿床类型。该区矿产勘查主攻矿种应以铁、钼为主,兼顾构造蚀变岩型石英脉型金、银矿;主攻矿床类型为太古代沉积变质铁矿、石英脉型破碎蚀变岩型金矿、斑岩型钼矿。区内找矿应在重点围绕已发现矿床的攻深找盲基础上,沿古洞河北北西向断裂及其次级断裂、不同岩性接触面进行区域性的追索找矿,尤其应注意东西向断裂构造与北东及北西向断裂构造交汇部位、强硅化蚀变岩或石英脉出露部位、二长花岗岩或花岗闪长斑岩或花岗斑岩侵入地段或多金属异常发育地段的勘查工作。

Helong region is an important multi-metals exploration are in Jilin province in China.In recent years,numerous iron,molybdenum,gold,silver deposits areas have been found.It shows the good prospecting potential in this region.According the geological characteristics of current found deposits area,six categories of major deposit types have been divided.The main mineral exploration in this area should focus on iron and molybdenum,taking into account the structural altered rock type quartz vein type gold and silver deposits.The main deposit types should be archean sedimentary metamorphic iron deposit,crushed quartz vein altered rock type gold deposit,and porphyry molybdenum deposit.The regional prospecting direction should focus on the basis of deepening the found deposits and finding the blind region,making regional prospecting along the north and northwest fraction and second fraction directions of ancient cave river,and different lithological contact surfaces,with particular attention to the intersections of north-east direction breaking stuff construction and northeast and northwest breaking stuff constructions,strong silicified altered rock or quartz veins outcropping area,two long granite or granodiorite porphyry or porphyry intrusive area or multi-metal abnormal development area.