本文主要研究内容
作者刘斌（2019）在《相山铀-铅锌多金属矿床成矿流体特征及成矿机制研究》一文中研究指出：相山铀矿田位于华南赣杭火山岩型铀成矿带的西南端,江西省抚州境内。随着勘探程度不断加深,该地区已经形成了铀-铅锌多金属矿床集聚区。目前,对该地区铀-铅锌多金属矿床的成矿流体特征及成矿机理等的认识尚存在争议,尤其对于矿田西部地区揭露的铅锌矿化与铀矿床之间的关系研究相对薄弱。因此,本文综合运用蚀变岩石学、矿物地球化学、原位S同位素等方法,对相山铀矿田西部的居隆庵和河元背铀矿床,北部的沙洲铀矿床,及西部地区揭露的牛头山铅锌矿体开展研究,对比分析相山西部和北部铀矿床的热液蚀变及矿化流体的性质和来源,探讨牛头山铅锌矿体成矿流体来源,以便深入探讨铀-铅锌成矿机制及铅锌矿化与铀矿化之间的关系。镜下和电子探针分析表明,相山铀矿床的蚀变围岩和铀矿脉中发育的大量黄铁矿多为热液成因,主要形成于铀成矿前期,是引起铀还原沉淀的重要还原介质。相山铀矿田西部和北部铀矿床中黄铁矿的硫同位素组成差异显著,西部铀矿床(居隆庵和河元背)中黄铁矿的δ34S值为0.1‰～8.4‰,明显低于北部沙洲铀矿床中黄铁矿的δ34S值(7.5‰～16.2‰),表明形成两地区铀矿床中黄铁矿的热液流体和硫的来源不同。矿田西部铀矿床中形成黄铁矿的硫主要是通过大气降水演化的流体对基底变质沉积岩中硫的淋滤而获得,并在流体运移过程中存在来自围岩(火山-次火山岩)的硫的混入;北部铀矿床中形成黄铁矿的硫主要来自矿田西北侧红盆内的蒸发岩,这暗示了矿田内成矿流体存在红盆卤水的参与。此外,西部居隆庵和北部沙洲矿床中矿石的微量和稀土元素特征相对于它们各自的新鲜围岩和蚀变岩石也显示了显著的差异,表明形成西部和北部铀矿床的成矿流体具有不同的性质,形成西部铀矿床中成矿流体富F;而北部铀矿床中成矿流体相对贫F。矿田西部和北部铀矿床中铀均是以氟的络合物形式进行迁移,矿田内西部铀矿床成矿规模大于北部铀矿床,可能与西部成矿流体中F含量高于北部成矿流体中F含量有关,这暗示相山西部地区成矿潜力大于北部地区。对牛头山铅锌矿化体中硫化物原位S同位素的分析表明,形成该铅锌矿化体的矿化流体δ34SΣS值约为+3.79‰,利用共生矿物对(闪锌矿-方铅矿)硫同位素温度计计算获得的平衡温度为197～476℃,表明成矿流体为中高温的岩浆热液。此外,硫化物矿石的微量、稀土元素研究显示这种岩浆热液具有富Cl贫F的特征,主要为矿田西部河元背地区深部最晚阶段侵入的斑岩质岩浆分异的岩浆热液。通过对铀矿床和铅锌矿化体的对比分析,我们认为这两种矿床不是同一成矿作用的产物,铀矿床为中低温热液矿床,成矿流体为大气降水演化的热液;铅锌矿化体为中高温岩浆热液成因。此外,根据矿田西部铀矿床黄铁矿硫同位素特征及结合铀矿与铅锌矿化的空间分布关系,可认为铅锌矿化体可能为铀矿床中黄铁矿的形成提供了硫源。
Abstract
xiang shan you kuang tian wei yu hua na gan hang huo shan yan xing you cheng kuang dai de xi na duan ,jiang xi sheng fu zhou jing nei 。sui zhao kan tan cheng du bu duan jia shen ,gai de ou yi jing xing cheng le you -qian xin duo jin shu kuang chuang ji ju ou 。mu qian ,dui gai de ou you -qian xin duo jin shu kuang chuang de cheng kuang liu ti te zheng ji cheng kuang ji li deng de ren shi shang cun zai zheng yi ,you ji dui yu kuang tian xi bu de ou jie lou de qian xin kuang hua yu you kuang chuang zhi jian de guan ji yan jiu xiang dui bao ruo 。yin ci ,ben wen zeng ge yun yong shi bian yan dan xue 、kuang wu de qiu hua xue 、yuan wei Stong wei su deng fang fa ,dui xiang shan you kuang tian xi bu de ju long an he he yuan bei you kuang chuang ,bei bu de sha zhou you kuang chuang ,ji xi bu de ou jie lou de niu tou shan qian xin kuang ti kai zhan yan jiu ,dui bi fen xi xiang shan xi bu he bei bu you kuang chuang de re ye shi bian ji kuang hua liu ti de xing zhi he lai yuan ,tan tao niu tou shan qian xin kuang ti cheng kuang liu ti lai yuan ,yi bian shen ru tan tao you -qian xin cheng kuang ji zhi ji qian xin kuang hua yu you kuang hua zhi jian de guan ji 。jing xia he dian zi tan zhen fen xi biao ming ,xiang shan you kuang chuang de shi bian wei yan he you kuang mai zhong fa yo de da liang huang tie kuang duo wei re ye cheng yin ,zhu yao xing cheng yu you cheng kuang qian ji ,shi yin qi you hai yuan chen dian de chong yao hai yuan jie zhi 。xiang shan you kuang tian xi bu he bei bu you kuang chuang zhong huang tie kuang de liu tong wei su zu cheng cha yi xian zhe ,xi bu you kuang chuang (ju long an he he yuan bei )zhong huang tie kuang de δ34Szhi wei 0.1‰～8.4‰,ming xian di yu bei bu sha zhou you kuang chuang zhong huang tie kuang de δ34Szhi (7.5‰～16.2‰),biao ming xing cheng liang de ou you kuang chuang zhong huang tie kuang de re ye liu ti he liu de lai yuan bu tong 。kuang tian xi bu you kuang chuang zhong xing cheng huang tie kuang de liu zhu yao shi tong guo da qi jiang shui yan hua de liu ti dui ji de bian zhi chen ji yan zhong liu de lin lv er huo de ,bing zai liu ti yun yi guo cheng zhong cun zai lai zi wei yan (huo shan -ci huo shan yan )de liu de hun ru ;bei bu you kuang chuang zhong xing cheng huang tie kuang de liu zhu yao lai zi kuang tian xi bei ce gong pen nei de zheng fa yan ,zhe an shi le kuang tian nei cheng kuang liu ti cun zai gong pen lu shui de can yu 。ci wai ,xi bu ju long an he bei bu sha zhou kuang chuang zhong kuang dan de wei liang he xi tu yuan su te zheng xiang dui yu ta men ge zi de xin xian wei yan he shi bian yan dan ye xian shi le xian zhe de cha yi ,biao ming xing cheng xi bu he bei bu you kuang chuang de cheng kuang liu ti ju you bu tong de xing zhi ,xing cheng xi bu you kuang chuang zhong cheng kuang liu ti fu F;er bei bu you kuang chuang zhong cheng kuang liu ti xiang dui pin F。kuang tian xi bu he bei bu you kuang chuang zhong you jun shi yi fu de lao ge wu xing shi jin hang qian yi ,kuang tian nei xi bu you kuang chuang cheng kuang gui mo da yu bei bu you kuang chuang ,ke neng yu xi bu cheng kuang liu ti zhong Fhan liang gao yu bei bu cheng kuang liu ti zhong Fhan liang you guan ,zhe an shi xiang shan xi bu de ou cheng kuang qian li da yu bei bu de ou 。dui niu tou shan qian xin kuang hua ti zhong liu hua wu yuan wei Stong wei su de fen xi biao ming ,xing cheng gai qian xin kuang hua ti de kuang hua liu ti δ34SΣSzhi yao wei +3.79‰,li yong gong sheng kuang wu dui (shan xin kuang -fang qian kuang )liu tong wei su wen du ji ji suan huo de de ping heng wen du wei 197～476℃,biao ming cheng kuang liu ti wei zhong gao wen de yan jiang re ye 。ci wai ,liu hua wu kuang dan de wei liang 、xi tu yuan su yan jiu xian shi zhe chong yan jiang re ye ju you fu Clpin Fde te zheng ,zhu yao wei kuang tian xi bu he yuan bei de ou shen bu zui wan jie duan qin ru de ban yan zhi yan jiang fen yi de yan jiang re ye 。tong guo dui you kuang chuang he qian xin kuang hua ti de dui bi fen xi ,wo men ren wei zhe liang chong kuang chuang bu shi tong yi cheng kuang zuo yong de chan wu ,you kuang chuang wei zhong di wen re ye kuang chuang ,cheng kuang liu ti wei da qi jiang shui yan hua de re ye ;qian xin kuang hua ti wei zhong gao wen yan jiang re ye cheng yin 。ci wai ,gen ju kuang tian xi bu you kuang chuang huang tie kuang liu tong wei su te zheng ji jie ge you kuang yu qian xin kuang hua de kong jian fen bu guan ji ,ke ren wei qian xin kuang hua ti ke neng wei you kuang chuang zhong huang tie kuang de xing cheng di gong le liu yuan 。
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论文详细介绍
论文作者分别是来自南京大学的刘斌，发表于刊物南京大学2019-07-02论文，是一篇关于相山铀矿田论文,铀矿床论文,铅锌矿化论文,成矿流体论文,南京大学2019-07-02论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自南京大学2019-07-02论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：相山铀矿田论文; 铀矿床论文; 铅锌矿化论文; 成矿流体论文; 南京大学2019-07-02论文;