首页 | 本学科首页   官方微博 | 高级检索  
     检索      

隐伏金属矿床上升气流微粒特征、形成及迁移
引用本文:曹建劲.隐伏金属矿床上升气流微粒特征、形成及迁移[J].地学前缘,2012,19(3):113-119.
作者姓名:曹建劲
作者单位:中山大学地球科学系,广东广州510275 广东省地质过程与矿产资源探查重点实验室,广东广州510275
基金项目:国家自然科学基金项目,国家高技术研究发展计划“863”项目
摘    要:结合地球化学和纳米科学技术的理论和研究方法,研究隐伏金属矿床有关微粒的形成、迁移和特征。对十多个金属矿床的研究表明,隐伏金属矿体地表沉积物中上升气流微粒样品有单个微粒和微粒聚合体,单个微粒形态有球状、近球状、不规则状、规则多边形、长柱状,微粒有晶质、非晶质和部分晶质。聚合体形态一般是不规则状、球状和近球状。它们的矿物成分主要有自然Au、自然Cu、氯化物、氧化物、硫酸盐、氢氧化物等。成矿元素Au、Cu可以自然金属或自然合金形式存在,Cu、Pb、Zn等成矿元素可以氧化物或硫酸盐等形式存在,也可以存在于氧化物、氢氧化物、氯化物、硫酸盐等微粒中作为杂质元素,这些是隐伏金属矿体的指示微粒。成矿期后,与隐伏金属矿体有关微粒主要形成于断层作用、氧化作用和生物作用。在上升气流中,微粒呈"布朗运动"。

关 键 词:隐伏金属矿体  微粒  微粒聚合体  金属元素迁移  布朗运动

Characteristics,formation and migration of the particles carried by ascending gas flow from the concealed metal deposits
Cao Jianjin.Characteristics,formation and migration of the particles carried by ascending gas flow from the concealed metal deposits[J].Earth Science Frontiers,2012,19(3):113-119.
Authors:Cao Jianjin
Institution:Cao Jianjin 1,2 1.Department of Earth Sciences,Sun Yat-sen University,Guangzhou 510275,China 2.Guangdong Key Laboratory of Geological Process and Mineral Resources Exploration,Guangzhou 510275,China
Abstract:Characteristics,formation and migration of the particles carried by ascending gas flow in the concealed metal deposits were studied.In the research,the theory and method of geochemistry and of nano scale science and technology were adopted and more than ten metal deposits had been studied.The results showed that particles carried by ascending gas flow in surface sediments above concealed metal orebodies occur in forms of individual particles and particle aggregations.The shapes of individual particles are spherical,near-spherical,irregular,regular polygon,and long columnar.The particles are crystalline,amorphous,or partly ordered semi-crystalline.The shapes of aggregations are irregular,spherical,or near-spherical.Their mineral compositions are dominantly native gold,native copper,chloride,oxide,sulfate,and hydroxide.The ore-forming elements such as Au,Cu may be in the form of native metals or native alloys.The ore-forming elements such as Cu,Pb,Zn may be in the form of oxide,or sulfate.They,too,may be the impurity elements existing in particles such as chloride,oxide,sulfate,and hydroxide.The particles are the indicators of concealed metal orebodies.After mineralization,the particles related to the concealed metal orebodies were mainly formed by faulting,oxidation and biological effects.In the ascending gas flow,particles are in Brownian motion.
Keywords:concealed orebodies  particles  particle aggregation  metallic element migration  Brownian motion
本文献已被 CNKI 万方数据 等数据库收录!
点击此处可从《地学前缘》浏览原始摘要信息
点击此处可从《地学前缘》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号