摘要
对东丰县胡米—建国银矿床地质特征进行总结以探讨其成因类型.研究表明,银矿体受北西向断裂构造控制,主要矿石类型为强硅化蚀变岩型,矿石结构以半自形-他形粒状结构为主,矿石构造为稀疏浸染状构造围岩蚀变主要有硅化、绢云母化、黄铁矿化.综合矿体产出的形态、产状、矿石类型、矿石组构及围岩蚀变等地质特征,初步认为矿床成因类型为中低温热液蚀变岩型.
Abstract
In this paper,the authors summarize the geological features of the Humi-Jianguo silver deposit in Dongfeng County to explore its genesis type.Research indicates that the silver ore body is controlled by northwest-trending fault struc-tures.The main ore type is strongly silicified altered rock type,with the ore structure is mainly composed of semi automor-phic to xenomorphic granular structures.The ore texture exhibits a sparse disseminated structure,and the alteration of the surrounding rock mainly includes silicification,sericitization,and pyritization.Based on the comprehensive geological fea-tures such as the morphology,occurrence,ore types,ore composition,and alteration of the surrounding rock,it is prelimi-narily concluded that the genesis type of the deposit is a medium-low temperature hydrothermal altered rock type.
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