广西隆或金锑矿床稀土、微量元素地球化学特征及其地质意义  

Geochemical Characteristics of REE and Trace Elements Compositions and Geological Significance of Longhuo Gold-antimony Deposit in Guangxi

作　　者：张辰光 李昌明 蒋剑 覃洪锋 刘明华 周红升 史兴俊 ZHANG Chenguang;LI Changming;JIANG Jian;QIN Hongfeng;LIU Minghua;ZHOU Hongsheng;SHI Xingjun(Collegeof Geographic Science/Southern Henan Center for Mineral Rock and Gem-Jade Identification and Processing,Xinyang Normal University,Xinyang 464000,China;The Guangxi Zhuang Autonomous Region Institute of Geological Survey,Nanning 530023,China;China-ASEAN Geosciences Cooperation Center,Nanning 530023,China)

机构地区：[1]信阳师范学院地理科学学院/豫南岩矿宝玉石鉴定及加工中心,河南信阳464000 [2]广西壮族自治区地质调查院,广西南宁530023 [3]中国-东盟地学合作中心,广西南宁530023

出　　处：《信阳师范学院学报（自然科学版）》2022年第1期103-107,共5页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家重点基础研究发展计划(973)项目(2014CB440901);中国地调局区调项目(121201009000150002);河南省科技攻关项目(192102310268);信阳师范学院“南湖学者奖励计划”青年项目。

摘　　要：隆或金锑矿床是广西右江成矿带新近发现的重要矿床,为了探讨其成矿流体来源,对其地质背景、矿石及围岩的稀土、微量元素地球化学特征进行对比分析研究。结果表明:矿床赋存于下石炭统-上泥盆统一套碳酸盐岩地层中。矿体呈似层状、脉状,主要受近东西向断裂控制。元素地球化学特征指示隆或金锑矿床成矿流体具有壳幔混合特征,但富矿围岩可能不是成矿物质的主要来源,主要成矿物质可能由地幔深源流体带来,成矿流体环境为Cl^(-)>F^(-)的还原环境。结合矿床地质特征,认为隆或金锑矿床为中低温热液金矿床。Longhuo Gold-antimony deposit is an important deposit which is recently discovered in Youjiang metallogenic belt of Guangxi.In order to explore the ore-forming materials source of this deposit,the geological background of the deposit and the geochemical characteristics of rare earth and trace elements of wall rocks and orebodies are systematically compared.The results show that:orebodies are mainly located in Carbonate of the Lower Carboniferous-lupper devonian formation,and controlled by the fault near the east-west direction,and show layer-like and vein shape.The element geochemical characteristics indicate that the ore-forming fluid of the deposit has the characteristics of crust-mantle mixing.The ore-bearing wall rock may not be the main source of ore-forming materials.The main ore-forming material may be brought by deep-source fluids in the mantle.The fluid is a reducing environment fluid system with Cl^(-)>F^(-).Based on the geological features of the deposit,it is considered that the Longhuo Gold-antimony deposit is a medium to low temperature hydrothermal gold deposit.

关 键 词：隆或金锑矿床 元素地球化学 成矿流体特征 

分 类 号：P618[天文地球—矿床学]