西藏多不杂—波龙矿集区铜矿床地质特征及找矿预测模型

Series No．497November一2017一一一一一一一一一一一一一一金一一属一一矿一一山METAL MINE 一一一一一一一一一一一一一一总第497期2017年第11期收稿日期一2017-08-04

作者简介一黄德晶(1983 ),女,讲师,硕士三四地质与测量四

西藏多不杂—波龙矿集区铜矿床

地质特征及找矿预测模型

黄德晶

(江门职业技术学院艺术设计系,广东江门529090)

摘一要一西藏多不杂波龙矿集区位于金沙江缝合带和怒江缝合带之间,缝合带内已发现了多个成带状分布的

金二铜二铬矿床,成矿地质条件优越三在详细分析多不杂波龙矿集区地层二构造二岩浆岩二物化遥特征的基础上,以该矿集区内的多不杂铜矿为例,详细研究了该矿床的地质特征,并构建了包含岩浆岩特征二控矿构造特征二围岩蚀变特征二地层岩石类型二物化遥异常特征以及表生矿物组构的找矿预测模型三研究表明:经工程验证发现在多不杂波龙集矿区的尕尔勤铜矿区内存在一个长10km二宽3km 的巨型蚀变体,经ZK1901钻孔深部验证,当钻孔穿越300~400m 厚的黄铁矿+硅化带后,逐渐出现了铜矿化体,且随着深度的增加,铜矿化更趋明显;在该集矿区NW 侧存在规模较小的铜矿床,SE 侧存在一个规模较大的黄铁矿,前者形成于距晓坑火山2．5km 处,沿NW 走向的断裂破碎带区域内,晓坑火山机构SE 侧2．5km 范围内的主含矿断裂为该矿集区下一步的重点找矿区域三上述分析对于在该矿集区进一步开展铜矿及其他多金属矿找矿勘探工作有一定的借鉴价值三

关键词一多不杂波龙矿集区一铜矿一找矿预测模型一物化遥异常一钻探验证

一一中图分类号一P618.4一一一文献标志码一A一一一文章编号一1001-1250(2017)-11-127-05Prospecting Prediction Model and Geological Characteristics of the Copper Deposit in Duobuza-Bolong Ore Concentration Area in Tibet

Huang Dejing

(Department of Art Design ,Jiangmen Polytechnic ,Jiangmen 529090,China )Abstract 一Duobuza-Bolong ore concentration area in Tibet is located between the Jinshan River Suture Zone and Nu Riv-er Suture Zone,many zonal distributed deposits of copper,gold,chrome are found in the suture zones,the metallogenic condi-tions of the area is good．Based on the newly prospecting results of the area,the stratum,structure,magmatic rock and geophysi-cal,geochemical and remote sensing characteristics of the area are analyzed in detail,taking Duobuza Copper Deposit in Duobuza-Bolong ore concentration area as the study example,the deposit geological characteristics is discussed．Based on the a-bove analysis results,the prospecting prediction model related to magmatic rock characteristics,ore-controlling structure charac-teristics,surrounding rock alteration characteristics,stratum rock type,geophysical,geochemical and remote sensing anomalies characteristics is established．The study results show that:the huge alteration rock mass with the length of 10km,width of 3km in Gaerqin Copper Mining Area in Duobuza-Bolong ore concentration area is found by engineering verification,the depth verifi-cation results of ZK1901drill show that the copper mineralization body is found gradually after the pyrite and silicification zone with the depth of 300~400m by ZK1901drill,with the increasing of drilling depth,the copper mineralization characteristics is more obvious;the copper deposits with small scale are distributed in the northwest of Duobuza-Bolong ore concentration area,the pyrite deposit with large scale is distributed in the southeast of Duobuza-Bolong ore concentration area,the formation area of the former deposit is located in the NW trending fracture zone,and it is away from Xiaokeng Volcano about 2．5km,the main ore-bearing fault away from Xiaokeng Volcano about 2．5km in the southwest direction of Xiaokeng Volcano can be taken as the further key prospecting area in Duobuza-Bolong ore concentration area．

Keywords 一Duobuza-Bolong ore concentration area,Copper deposit,Prospecting prediction model,Geophysical,geochem-

ical and remote sensing anomalies,Drilling verification

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