西秦岭天水地区猴家沟金矿水系沉积物特征及成矿条件浅析  

Analysis of Stream Sediment Characteristics and Metallogenic Conditions of Houjiagou Gold Mine in Tianshui Region of Western Qinling Mountains

作　　者：张栋梁 吴德海 吴赞华 胡昊 费磊 穆玖清 Zhang Dongliang;Wu Dehai;Wu Zanhua;Hu Hao;Fei Lei;Mu Jiuqing(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang,Jiangxi,330030,China;The Ninth Geological Brigade of Jiangxi Bureau of Geology,Nanchang,Jiangxi,331000,China;Key Laboratory of Ionic Rare Earth Resources and Environment,Ministry of Natural Resources,Jiangxi College of Applied Technology,Ganzhou,Jiangxi,341000,China;Jiangxi Bureau of Geology,Nanchang,Jiangxi,330036,China)

机构地区：[1]核资源与环境国家重点实验室东华理工大学,江西南昌330030 [2]江西省地质局第九地质大队,江西南昌3310003 [3]自然资源部离子型稀土资源与环境重点实验室江西应用技术职业学院,江西赣州341000 [4]江西省地质局,江西南昌330036

出　　处：《化工矿产地质》2025年第1期1-10,共10页Geology of Chemical Minerals

基　　金：江西省自然资源厅科技创新项目南岭成矿带东段寨背岩体精细矿物学与地球化学研究—对铀与稀土成矿作用的约束(编号:ZRKJ20222401)。

摘　　要：结合区域地质背景、矿区地质特征以及水系沉积物金综合异常测试资料对研究区进行综合分析,通过地质、化探、工程揭露等手段系统开展金矿普查工作。从猴家沟地区1∶50000水系沉积物地球化学异常来看,区内Au元素背景值为4.9×10^(-9),高于地壳丰度值4.0×10^(-9),呈高背景分布,元素浓集中心明显,与目前发现的金矿体相吻合,认为震旦-奥陶系丹凤群木其滩组第二岩性段((Z-O)m^(2))为主要的矿源层;构造破碎带是金成矿的先决条件,燕山期侵入岩为Au元素的活化、迁移提供了热源;进而提出了该区找金以中低温热液构造蚀变岩型为主要远景矿化类型;综合分析了金矿的控矿因素及成矿远景,推测其成矿条件,为后续工作打下一定的基础。Based on the regional geological background,geological characteristics of the mining area,and the test data of gold synthesis anomaly of the stream sediment,a comprehensive analysis is conducted on the study area.The gold mine survey was carried out systematically by means of geological,chemical exploration and engineering disclosure.From the perspective of geochemical anomalies of 1:50000 stream sediment in Houjiagou,the background value of Au elements in the area is 4.9×10^(-9),which is higher than the crustal abundance value of 4.0×10^(-9),showing a high background distribution and an obvious element concentration center,which is consistent with the gold ore body discovered at present.It is believed that the second lithologic member[(Z-O)m^(2)]of the Muqitan formation of the Danfeng group of Sinian-Ordovician is the main source bed,and the structural fracture zone is the prerequisite for gold mineralization.The intrusive rock of Yanshanian provide heat source for the activation and migration of Au elements.Further,it is suggested that the main prospective mineralization type of gold prospecting in this area is the medium and low temperature hydrothermal tectonic-altered rock type.The ore-controlling factors and ore-forming prospect of the gold deposit are analyzed comprehensively,and the ore-forming conditions are speculated,which lays a certain foundation for the follow-up work.

关 键 词：成矿条件 水系沉积物特征 猴家沟金矿 西秦岭 

分 类 号：P618.51[天文地球—矿床学]