东天山沙泉子某银金矿地质特征及找矿方向  

Geological features and exploring direction of one electrum in Shaquanzi of eastern Tianshan Mountains

作　　者：王小明 彭新发 朱小兵 WANG Xiao-ming;PENG Xin-fa;ZHU Xiao-bing(Changsha Uranlum Geology Research Institute,CNNC,Changsha 410007,Hunan,China)

机构地区：[1]核工业二三〇研究所,湖南长沙410007

出　　处：《资源信息与工程》2020年第3期1-3,共3页Resource Information and Engineering

基　　金：青海省柴达木盆地东部铀矿资源调查评价项目资助(202018-2)。

摘　　要：在阿齐山—雅满苏岛弧环境和沙泉子火山机构双重作用下,研究区内具有丰富的成矿物质来源。广泛发育的硅化破碎带为成矿流体提供了运移通道和容矿空间。后期岩浆活动为Au、Ag等元素二次富集成矿提供了必要条件。本文分析研究区内控矿构造、热液蚀变以及地质背景,总结了找矿标志,提出了早期断裂和闪长岩脉交汇部位是寻找硅化破碎带型银金矿的最有利地段。There are extraordinarily rich ore-forming materials in study area under the combined effect of Aqishan—Yamansu island-arc environment and the Shaquanzi volcano.The widespread developed silicified fracture zone provides migration pathways and ore-holding space for ore-forming fluids.The magmatism provided the necessary conditions for the secondary enrichment of the Au and Ag elements.The article analyzed the ore-controlling structure,hydrothermal alteration,and geological background in the study area,summarized the prospecting criteria,and proposed that the intersection of early fracture and diorite veins is the most favorable location for finding the silicified fracture zone electrum.

关 键 词：银金矿 找矿标志 硅化破碎带 岩浆活动 

分 类 号：P618[天文地球—矿床学]