吉林长仁铜镍矿床地质特征及矿床成因探讨

Geologic features and genesis of Changren copper-nickel deposit in Jilin Province

长仁铜镍矿床产出在∑11号岩体中,而岩体赋存于长仁—青龙断裂的NNE向压扭性构造带内,围岩为奥陶系青龙村群下段地层(Oq1-3)。岩体呈岩株状、透镜状,岩体与围岩接触面呈舒缓波状。矿体赋存在∑11号超薄性岩体的辉石橄榄岩-含长辉石橄榄岩岩相中,呈似层状、透镜状产出。该矿床的成因初步认为是岩浆晚期熔离-贯入型矿床。

The Changren copper-nickel deposit hosts in ∑11 rock body,and the rock occurrences in Changren-Qinglong fracture NNE compresso-shear tectonic belt.The surrounding rock is the lower strata of Qinglongchun Group of Ordovician（Oq^1-3）.The rock body shows stock lens-shaped,The contact plane of rock bodies and surrounding rocks show leisure warv shape ore bodies occur in ∑11 ultra-thin pyroxene olive rock-olive rock bearing pyroxene olives,showing lay-like,lenticular structure.It is preliminary considered that deposit belongs to late magmatic melt-penetration one in genesis.