河南省龙头寨重晶石矿床地质特征、矿床成因及找矿前景分析  

Geological characteristics,genesis and prospecting prospect analysis of Longtzhai barite deposit in Henan

作　　者：朱静 王红军 裴海洋 任婧文 刘祖尧 Zhu Jing;Wang Hongjun;Pei Haiyang;Ren Jingwen;Liu Zuyao(Henan Province first geological mineral survey Institute Limited company,Luoyang 471000,Henan,China;Precious metals analysis and exploration techniques,Ministry of Natural Resources Key laboratory,Luoyang 471000,Henan,China;Henan Key Laboratory of Gold and Silver Polymetallic Metallogenic Series and Deep Prediction,Luoyang471000,Henan,China)

机构地区：[1]河南省第一地质矿产调查院有限公司,河南洛阳471000 [2]自然资源部贵金属分析与勘查技术重点实验室,河南洛阳471000 [3]河南省金银多金属成矿系列与深部预测重点实验室,河南洛阳471000

出　　处：《矿产与地质》2023年第6期1221-1232,共12页Mineral Resources and Geology

基　　金：河南省自然资源厅2019年度省财政地质勘查新立项目(豫自然资发〔2019〕22号)“河南省三门峡市陕州区龙头寨银矿预查报告”资助。

摘　　要：河南省陕州区地处豫西腹地,华北克拉通南缘,位于张茅—段村重晶石成矿远景区,是寻找重晶石矿较为有利的地区。矿体赋存于中元古界熊耳群中基性-中酸性火山熔岩地层中,矿体严格受断裂控制,产于构造蚀变带内,与围岩边界清楚,呈脉状展布。通过地表工程,区内共发现含重晶石构造蚀变带8条,其中F_(21)、F_(23)、F_(36)三条构造带含重晶石品位高,共圈出重晶石矿体4个,估算重晶石潜在矿产资源矿石量28.75万t,BaSO_(4)平均品位为78.02%。通过分析区内重晶石矿所处的构造背景、矿床地质特征、矿石质量并与典型重晶石矿床地质特征进行类比,初步认为该矿床属岩浆热液重晶石矿床,成矿多与岩浆活动直接相关。Shaanzhou District,Henan Province is located in the hinterland of West Henan,on the south edge of North China Craton,in the Zhangmao-Duancun barite mineralization prospective area.It is a favorable area to search for barite deposit.The ore body is located in the basic to moderately acidic volcanic lava strata of Xiong'er Group in the Middle Proterozoic.The ore body is strictly controlled by faults and occurs in the sructural alteration zone,with clear boundary to the surrounding rock and in a vein like distribution manner.Through surface engineering,a total of 8 barite alteration structure zones are discovered in the area.Among them,the F_(21),F_(23),and F_(36) structural zones have high barite grades,and a total of 4 barite ore bodies have been delineated.It is estimated that there are 287500 tons of barite potential mineral resources,and the average grade of BaSO_(4) is 78.02%.By analyzing the structural background,geological characteristics,and ore quality of the barite deposit in the area,and comparing it with the geological characteristics of typical barite deposits,it is preliminarily considered that the deposit belongs to a magmatic hydrothermal barite deposit,and the mineralization is mostly directly related to the magmatic activity.

关 键 词：重晶石矿床 地质特征 矿床成因 找矿前景 陕州区龙头寨 

分 类 号：P619.251[天文地球—矿床学]