小兴安岭霍吉河钼矿床成矿过程——透岩浆成矿作用

摘要

传统上将小兴安岭霍吉河钼矿床归类为斑岩型钼矿. 通过对矿区地质特征的研究,即矿区无斑岩体、矿体围绕隐爆角砾岩呈环状出露、石英细脉-网脉状和浸染状矿石结构、成矿年龄明显晚于赋矿围岩形成时间等,认为该矿床是透岩浆成矿作用的结果.早中生代伊春-延寿花岗岩岩基带上相伴的大型—超大型钼矿是典型的透岩浆成矿作用的产物,是岩基后成矿作用.%Traditionally, the Huojihe molybdenum deposit in Xiaoxinganling Mountains is classified as porphyry type. With study on its geological characteristics such as non-porphyritic mass, orebodies circling around the cryptoexplosive breccia, veinlet-network and disseminated structures of quartz and the metallogenic age obviously later than forming time of host rock, it is believed that the deposit is formed by transmagmatic mineralization. The large-super large molybdenum deposit associated with the Early Mesozoic Yichun-Yanshou granitic batholith belt is a typical product of post-batholith metallogenesis.