摘要
结合野外工作和前人资料 ,对华熊地块熊耳山地区金矿床进行了分析 ,认为该区金矿床从控矿构造和围岩蚀变特征上可划分为两类 ,矿床的流体包裹体、成矿温度以及盐度特征 ,说明了它们的形成均与中生代富钾质、富含挥发组分的花岗质岩体 (10 0～ 14 0Ma)有关 ,主要形成于挤压向拉张环境中。该区金矿床属于与侵入岩有关的金矿系统中的浅成低温热液矿床 ,可与近年来在环太平洋带发现的斑岩型金矿对比。
Based on data and field observation of gold deposits in Xiong'er Mountain, the paper classifies the gold deposits into two types according to control structure and alteration characteristics. The fluid inclusion, metallogenic temperature and salinity feature of gold deposits in the area suggests that the deposits originated from Mesozoic granitoid intrusions (100～140Ma) characterized by rich K and volatile matter. These intrusions were formed in compression to extensional environment. The gold deposits in the area are epithermal deposit, the features of which are similar to the porphyritic Cu-Au gold deposit recently discovered in the periphery of the Pacific Ocean.
出处
《黄金》
CAS
2004年第10期15-19,共5页
Gold
