豫西熊耳山矿集区金银多金属矿床地球化学特征及地质意义  

Geochemical features of Au-Ag polymetallic deposits in Xiong'ershan ore district of western Henan and their geological significances

作　　者：刘文毅[1,2,3] 刘继顺 何美香[3] 丁云河 李永峰 LIU Wen-yi;LIU Ji-shun;HE Mei-xiang;DING Yun-he;LI Yong-feng(Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitor,Ministry of Education,Central South University,Changsha 410083,China;School of Geosciences and Info physics,Central South University,Changsha 410083,China;No.7 Geological Team,Bureau of Nonferrous Metals Geology and Mineral Resources of Henan Province,Zhengzhou 450016,China;Non-Ferrous Mineral Exploration Engineering Research Center of Henan Province,Zhengzhou 450016,China)

机构地区：[1]中南大学有色金属成矿预测与地质环境监测教育部重点实验室,长沙410083 [2]中南大学地球科学与信息物理学院,长沙410083 [3]河南省有色金属地质矿产局第七地质大队,郑州450016 [4]河南省有色金属矿产探测工程技术研究中心,郑州450016

出　　处：《中国有色金属学报》2018年第7期1401-1417,共17页The Chinese Journal of Nonferrous Metals

基　　金：国土资源部公益性行业科研专项项目(201111007-2)~~

摘　　要：研究区位于河南省西部,大地构造位置位于华北陆块南缘,属于小秦岭-崤山-熊耳山金银多金属成矿带。出露基底岩性为太华群变质岩,盖层为熊耳群火山岩,岩浆岩以花岗岩类为主。通过对典型矿床C-H-O-S-Pb同位素和流体包裹体研究,以及对区内金银多金属矿的成矿地质背景、成矿物质来源及控矿规律的综合分析,建立了研究区成矿模式。研究结果表明:熊耳山矿集区金银多金属矿成矿流体和成矿物质具有壳幔混合特征,主要来源于地幔;成矿阶段分为石英-黄铁矿阶段(Ⅰ)、石英-多金属硫化物阶段(Ⅱ)及石英-碳酸盐阶段(Ⅲ);熊耳山矿集区成矿高峰期集中在220 Ma-140 Ma-120 Ma等3个时间段,成矿时代以燕山期为主,其次为印支期。The study area is located in the west of Henan Province, tectonically located in the southern margin of Nort21 China block, belonging to Xiaoqinling-Xiaoshan-Xiong＇ershan Au-Ag polymetallic metallogenic belt. The exposed basement lithology is metamolphic rocks of Taihua Group, and the cover is the Xiong＇er Group volcano rock. The main magmatic rock is granite. Through the research on C-H-O-S-Pb isotope and fluid inclusion, and comprehensive analysis on the metallogenic geological background, metallogenic material source and ore controlling regularity of Au-Ag polymetallic deposits in this area, the metallogenic model of the study area is established. The results show that the ore-forming fluids and ore-forming materials, with crust mantle mixing characteristics, mainly derived from the mantle; the metallogenic process is divided into quartz-pyrite stage （I）, quartz-polymetallic sulfide stage （II） and quartz-carbonate stage （III）; the peak period of mineralization is concentrated in 220 Ma-140 Ma-120 Ma, and the metallogenic epoch is mainly in Yanshan period, followed by Indosinian.

关 键 词：熊耳山 金银多金属矿 地球化学特征 地质意义 

分 类 号：P597[天文地球—地球化学]