宁夏盐池某石膏矿矿床地质特征及矿床成因浅析  

Analysis of Geological Characteristics and Genesis of Deposit of a Gypsum Deposit in Yanchi County,Ningxia

作　　者：王启 韩茂武 杨杰[1] WANG Qi;HAN Mao-Wu;YANG Jie(Ningxia Branch of China National Geological Exploration Center of Building Materials Industry,Yinchuan 750021,China)

机构地区：[1]中国建筑材料工业地质勘查中心宁夏总队,宁夏银川750021

出　　处：《中国非金属矿工业导刊》2024年第4期43-45,67,共4页China Non-Metallic Minerals industry

基　　金：宁夏回族自治区地质勘查基金项目“宁夏回族自治区自然资源厅2022年度地方急需矿产资源勘查项目”(编号:JYZX-ZC-2022004)。

摘　　要：宁夏盐池石膏矿赋存于古近系渐新统清水营组第二岩性段(E_(3q)^(2))中部,研究区共圈定石膏矿一层,矿层东西长1614~2260m,南北宽650~1100m,石膏+硬石膏平均品位为69.51%。具有埋藏浅、厚度大、品质高、开采技术条件好等优势备受市场青睐。本文以宁夏盐池县某石膏矿地质勘查成果为依据,从成矿地质背景、矿床地质特征及矿体地质特征等方面进行归纳总结,并通过成矿物质来源、成矿古气候、古地理及膏岩形成机制等方面研究对矿床成因进行了分析,以期为该矿床开发利用提供参考。Ningxia Yanchi gypsum ore occurs in the middle of the second lithological member of the Qingshuiying formation of the Paleogene Oligocene.Only layer of gypsum ore was found in the study area which is about 1614~2260m from east to west and about 650~1100m from north to south.The average grade of gypsum and anhydrite is 69.51%.The natural gypsum mine in Yanchi,Ningxia,is favored by the market for its advantages of shallow burial,large thickness,high quality and good mining technical conditions.Based on the geological exploration results of a gypsum deposit in Yanchi county,Ningxia,this paper summarizes the regional geological background,geological characteristics of the deposit and geological characteristics of ore body,and analyzes the genesis of the deposit by studying the source of metallogenic materials,metallogenic paleoclimate,paleogeography and formation mechanism of gypsum rock,in order to provide reference for the development and utilization of the deposit.

关 键 词：宁夏盐池县 石膏矿 地质特征 矿床成因 

分 类 号：P619.261[天文地球—矿床学]