湘东钨矿矿床地质特征及深部找矿预测

摘要/Abstract

摘要： 湘东钨矿位于扬子板块与华夏板块结合带，邓阜仙—诸广山NW向和陵县—临武NE向构造岩浆岩带交汇处，为石英脉型钨矿床。该矿区自20世纪50年代投产以来已连续开采约60 a，探明的可采钨矿资源已接近枯竭，该矿山已逐渐步入资源危机矿山行列。进一步开展矿区深部及其外围找矿勘查工作，扩大资源储量，对于延续矿山服务年限意义重大。结合矿区近年来的地质勘探成果，详细分析了区域成矿地质背景、矿区及矿床地质特征，并进行了深部找矿预测。研究表明：①燕山早期中粒二云母花岗岩岩浆和构造活动形成的大断裂带（EW向老山坳断层（F₁），NE向金竹垄断层（F₂））为成矿提供了物质基础和空间基础，燕山晚期构造活动对成矿后的矿脉起破矿作用；②矿区先后经历了加里东期、印支期挤压作用，燕山早期伸展作用以及燕山晚期挤压作用等4个主要的构造活动；③根据矿区成矿地质特征，综合分析认为老山坳断层（F₁）下盘深处破裂发育区、SS2、SS3矿脉东端及深部、F8断层深部均为有利的找矿远景区，值得进一步开展工作。

关键词: 资源危机矿山, 深部找矿, 钨矿, 成矿构造, 找矿预测

Abstract: Xiangdong tungsten deposit is located at the contact zone of Yangtze Plate and Huaxia Plate,it is distributed in the intersection part of Dengfushan-Zhuguangshan NW-trending tectonic magmatic zone and Lingxian-Linwu NE-trending tectonic magmatic zone,the genesis of the deposit is quartz vein type tungsten deposit.The mining activities of the mining area has been lasted for more than 60 years since the mine is put into operation in the 1950s.The tungsten resources already explored in the mining area is close to depletion,the mine is gradually becoming the resource crisis mine.It is of great significance to conduct the prospecting work of the depth of the mining area and its adjacent area,to expand the resource reserve and extend the service live of the mine.Based on the geological prospecting results newly obtained in the minging area,the regional metallogenic geological background,geological characteristics of the mining area and tungsten deposit are discussed,and the deep prospecting prediction of tungsten deposit of the mining area is done.The study results show that:①the metallogenic material and space are provided by the large fault (it is mainly composed by EW-trending Laoshanao fault (F1) and NE-trending Jinzhulong fault (F2)) formed by medium mica granites magma and tectonic activity in Early Yanshanian,the ore veins after mineralization are broken by the tectonic activity in Late Yanshanian;②the main tectonic activities such as extrusion activity in Caledonian and Indo-Chinese Epoch,extending activity in Early Yanshanian,extrusion activity in Late Yanshanian are developed in the mining area;③according to the metallogenic geological characteristics of the mining area,the deep prospecting results indicated that the prospecting potential of the deep fracture developed zone of the lower of Laoshanao fault (F1),east and deep of SS2 and SS3 ore veins,depth of F8 fault are huge,it is necessary to conduct further prospecting and exploration work in theses areas.

Key words: Resource crisis mine, Deep prospecting, Tungsten deposit, Metallogenic structure, Prospecting prediction

黄德晶. 湘东钨矿矿床地质特征及深部找矿预测[J]. 金属矿山, 2018, 47(04): 140-144.

HUANG De-Jing. Geological Characteristics and Deep Prospecting Prediction of Xiandong Tungsten Deposit[J]. Metal Mine, 2018, 47(04): 140-144.

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湘东钨矿矿床地质特征及深部找矿预测

Geological Characteristics and Deep Prospecting Prediction of Xiandong Tungsten Deposit

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