吉林省桦甸市双杨树钼矿控矿条件浅析

桦甸双杨树钼矿成矿与印支—燕山期中—酸性岩浆岩岩体有关。燕山期多期次的岩浆岩侵入,为成矿提供了空间和矿液源。断裂带、侵位接触带为矿床提供了就位空间。矿体产于斑岩体和花岗闪长岩脉中,分析认为北北西向区域性基底断裂为控矿导矿构造,北北东向是后期形成的断裂为容矿构造;岩浆侵入作用和伴随的构造作用是双杨树钼矿形成的先决条件。在吉林中部地区北北东向的构造控矿类型较为普遍。

Preliminary analysis for ore-controlling conditions of Shuangyangshu molybdenum in Huadian,Jilin Province

Huadian Shuangyangshu molybdenum mineralization associated with intermediate-acid magmatic rock bodies of Indosinian to Yanshanian.Magmatic rock of Yanshanian intruded several times,it provided space and ore fluid source for mineralization.Fault zone,emplacement contact zone provided space location for the deposit.Ore bodies occurred in the porphyry and granodiorite veins,regional basement fault in NNW irection was ore–bringing structure,and NNE direction fracture formed in the later as the host structure;magma intrusion with tectonic process was precondition for formation of Shuangyangshu molybdenum deposit.Structures of NNE direction controlled deposit are more common in the central area of Jilin Province.