湘南红旗岭锡钨铅锌多金属矿区构造控矿规律及找矿预测  

Structural Control of Ore Mineralization of the Hongqiling Sn-W-Pb-Zn Polymetallic Deposit in Southern Hunan and its Prospecting Prognosis

作　　者：何昊 王雷[1] 韩润生[1] 许以明 赵冻 朱恩异 马跃华 蒋宗和 任雯琪 HE Hao;WANG Lei;HAN Runsheng;XU Yiming;ZHAO Dong;ZHU Enyi;MA Yuehua;JIANG Zonghe;REN Wenqi(College of Land and Resources Engineering,Kunming University of Science and Technology,Southwest Geological Survey Institute of Nonferrous Geological Survey Center,Kunming 650093,Yunnan,China;Geophysical Exploration Academy of China Metallurgical Geology Bureau,Baoding 071051,Hebei,China;South Hunan Provincial Geological Prospecting Institute,Chenzhou 423000,Hunan,China)

机构地区：[1]昆明理工大学国土资源工程学院,有色地质调查中心西南地质调查所,云南昆明650093 [2]中国冶金地质总局地球物理勘查院,河北保定071051 [3]湖南省湘南地质勘察院,湖南郴州423000

出　　处：《大地构造与成矿学》2023年第1期115-132,共18页Geotectonica et Metallogenia

基　　金：国家重点研发计划项目(2018YFC0603902);云南省“万人计划”青年拔尖人才计划;云南省矿产资源预测评价工程实验室(2010)联合资助。

摘　　要：红旗岭多金属矿区位于南岭成矿带中段北缘东坡矿田北东侧,是湘南脉状锡钨铅锌矿床的典型代表之一。矿体严格受构造控制,具有明显的平/剖面矿化分带现象。本文通过大比例尺构造剖面精细解析,典型控岩控矿构造力学性质鉴定,查明了锡钨矿体、铅锌矿体的控矿构造特征,总结了该矿床的构造控矿规律,提出深部有利赋矿构造部位。结果表明:①4号和101、102、103号锡钨矿体受NNE向断裂控制,具倾向相反、下钨上锡和深部交汇的空间分布特点。②F4为4号锡钨矿体的主控断裂,倾向SE,主要经历了成矿前压性→成矿期压扭性的转变过程;101、102、103号锡钨矿体受NNE向张性构造控制,倾向NW。③铅锌矿体(脉)空间展布总体受NE-NEE向断裂控制,具多期活动特征,经历了成矿期张扭性→成矿后左行扭性的转变过程,受其控制的3号矿体在平面上自南西侧至北东侧矿化元素呈现锡钨→铅锌过渡的分带规律。④矿区西侧NNE向控锡钨断裂向下延伸可与矿区东侧NE-NEE向控铅锌断裂联通。综合研究表明矿区东部控制铅锌矿体的NE-NEE向断裂深部具有较好锡钨找矿前景。The Hongqiling polymetallic deposit is located in the northern margin of the middle section of the Nanling metallogenic belt,the northeastern side of the Dongpo ore field to be specific.It is one of the typical representative vein-type Sn-W-Pb-Zn deposits in Southern Hunan.The ore-bodies are strictly controlled by the structures and show obvious horizontal/vertical mineralization zonation.Based on precise measurement of the large scale structural sections and identification of mechanical properties of the typical rock-controlling and ore-controlling structures,this paper ascertained the ore-controlling structural characteristics of the Sn-W and Pb-Zn orebodies,summarized the structural control of the orebodies,and put forward the favorable ore-bearing structural position at depth.The results show that:1)the No.4 and No.101,102 and 103 Sn-W orebodies are controlled by the NNE trending faults,and have the spatial distribution characteristics of opposite tendency,lower W-upper Sn and deep intersection.2)F4 is the main controlling fault of the No.4 Sn-W ore body,which is inclined to SE,and its mechanical properties mainly underwent the transformation process from compressive property before mineralization to compressive and torsional property during mineralization.The No.101,102 and 103 Sn-W orebodies are controlled by a group of NNE trending tensile structures.3)The spatial distribution of the Pb-Zn orebody(vein)is generally controlled by the NE-NEE trending fault,with multi-stage activity characteristics.It underwent tensile and torsional deformation during the metallogenic period and then left torsional deformation after the metallogenic period.And consequently,the ore metal contents of the No.3 orebody show zonation feature,i.e.,Sn-W to Pb-Zn transition from SW to NE in plane.4)The NNE trending fault in the west of the mining area,which controls the Sn-W mineralization,extends deep down,which can link the NE-NEE trending fault that controls the Pb-Zn mineralization in the east of the mining area.This comprehensiv

关 键 词：湘南红旗岭 构造控矿规律 锡钨铅锌多金属矿 矿化分带 深部找矿预测 

分 类 号：P612[天文地球—矿床学] P542[天文地球—地质学]