贵州汞矿地质地球化学特征  

Geological and geochemical characteristics of mercury mine in Guizhou

作　　者：覃英 陈启飞 范玉梅 徐遥 QIN Ying;CHEN Qifei;FAN Yumei;XU Yao(Guizhou Geological Survey,Guiyang 550081,Guizhou,China)

机构地区：[1]贵州省地质调查院,贵州贵阳550081

出　　处：《矿产勘查》2021年第10期2017-2025,共9页Mineral Exploration

基　　金：中国地质调查局“中国矿产地质·贵州卷资助”(DD20190379-28)资助。

摘　　要：汞矿是贵州重要的优势矿产之一,具有产出层位多、资源丰富的特点。区内汞矿主要产于台地相和台地蒸发岩相碳酸盐岩中,按容矿岩石不同划分为白云岩容矿和灰岩容矿两类矿床,前者分布于黔东、黔北等地区,以白云岩容矿单汞矿床为主,少量汞硒、汞铀钼及汞锌矿床,依据成矿区带、赋矿地层与矿床地质特征差异,矿床式划分为万山式、务川式、开阳式;后者主要为灰岩容矿的单汞矿床,次为汞金矿床和汞铊矿床,矿床式划分三丹式(单汞矿床、汞金矿床)和滥木厂式(汞铊矿床)。区内汞矿受地层岩相、岩性及断裂、褶曲构造的复合控制,是典型的浅成低温热液型矿床,主成矿期为燕山期,C、O、S同位素及包裹体研究表明,成矿流体主要为高盐度、高密度、弱酸—弱碱性热卤水,成矿温度集中在90~150℃之间,但不同地区、不同成矿带及不同类型矿床,其成矿物质来源、成矿环境存在差异。Mercury is one of the advantage mineral in Guizhou with the characteristics of multiple occurrence stratum and rich resources.In this area,mercury mainly occur in platform facies and platform evaporite facies carbonate rock,it’s divided into dolomite ore-bearing deposit and limestone ore-bearing deposit.The dolomite ore-bearing deposit distributed in east and north Guizhou,mainly is dolomite ore-bearing mercury deposit,a few is mercury selenium,mercury uranium,molybdenum and mercury zinc deposit.For the differences in metallogenic zone(belt),ore hosting layer and ore deposit geological characteristic,the ore deposit type are divided into Wanshan type,Wuchuan type and Kaiyang type.The limestone ore-bearing deposit mainly is limestone hosting mercury deposit,mercury gold deposit and mercury thallium deposit,the ore deposit type are divided into Sandan type(mercury deposit and mercury gold deposit)and Lanmuchang type(mercury thallium deposit).The mercury ore are controlled by stratigraphic facies,lithology,fault and fold structure,it’s a typical epithermal deposit,the metallogenic epoch is Yanshanian.The study of C,O,S isotope and inclusion shows that ore forming fluid mainly is high salinity,high density and weak acid base hot brine,the ore forming temperature is 90~150℃.But in different area,different metallogenic belt and different ore deposit,the ore forming material source and metallogenic environment are different.

关 键 词：地质特征 控矿特征 矿床类型 容矿岩石 汞矿 贵州 

分 类 号：P618.68[天文地球—矿床学] P595[天文地球—地质学]