构造热液型金矿勘查中存在的问题分析与探讨——以安徽两山地区为例  

Analysis and discussion on the problems existing in the exploration of tectonic hydrothermal gold deposits:An example from the“two mountains”in Anhui

作　　者：李文庆[1] 李杨 唐敏惠[1] LI Wenqing;LI Yang;TANG Minhui(Public Geological Survey Management Center of Anhui Province,Hefei,Anhui 230092,China;No.815 Unit,East China Bureau of Metallurgical Geology,Hefei,Anhui 230092,China)

机构地区：[1]安徽省公益性地质调查管理中心,安徽合肥230092 [2]华东冶金地质局八一五地质队,安徽合肥230092

出　　处：《安徽地质》2025年第1期10-13,共4页Geology of Anhui

基　　金：安徽省公益性地质调查项目“皖南障公山地区金锑矿资源调查评价”(编号:2021-g-2-10)资助。

摘　　要：本文就安徽皖南山区和大别山区(以下称“两山”)受构造控制的热液型金矿勘查和评价工作中出现的问题进行了一些研讨。从金矿的内生构造成矿作用的复杂性,以及表生富集机制进行剖析,揭示与构造有关的热液型金矿在内生成矿作用中,构造叠加晕控矿的机制和原理,以及后期的地壳隆升、剥蚀、风化淋滤过程中,对金矿次生富集的控制;提出在深部金矿探测工作中,应注重面上化探信息筛选分析,结合对垂向钻孔中岩石原生晕特征元素及异常变化规律的研究,辅以多种信息、蚀变标志判别和探测,以达到对盲矿体三维示踪预测的目的。This paper discusses the problems encountered in the exploration and evaluation of tectonically controlled hydrothermal gold deposits in the southern mountains and the Dabie mountains(hereinafter referred to as“two mountains”)in Anhui.By analyzing the complexity of endogenetic tectonic mineralization and supergene enrichment mechanism of the gold deposits,this paper reveals the mechanism and principle of tectonically superimposed halo’s control on endogenetic mineralization,and on secondary enrichment of the gold deposits in later crustal uplift,denudation,weathering and leaching processes.It is proposed that in deep gold exploration,we should pay attention to screening analysis of the regional geochemical survey information,to characteristic elements and their abnormal changes in the primary halo in borehole rocks in vertical direction,and to other information and means for identification and detection of alteration markers,so as to achieve the purpose of three-dimensional tracing and locating the concealed ore bodies.

关 键 词：安徽两山 剥蚀 次生富集 构造叠加晕 前缘晕 组合异常 示踪 

分 类 号：P611[天文地球—矿床学] P632[天文地球—地质学]