...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Asian earth sciences >Fluid inclusion and H-0 isotope evidence for immiscibility during mineralization of the Yinan Au-Cu-Fe deposit, Shandong, China
【24h】

Fluid inclusion and H-0 isotope evidence for immiscibility during mineralization of the Yinan Au-Cu-Fe deposit, Shandong, China

机译：山东沂南金铜铁矿床成矿过程中流体包裹体和H-0同位素不溶混的证据

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The fluid inclusion and H-0 isotope studies have provided the evidences for the source of ore-forming fluids, and helped to recognize two types of immiscibility and their relationships with mineralization. Hydrogen and oxygen isotopic geochemistry shows that the earlier ore-forming fluids during the anhy drous skarn stage (Ⅰ) and the hydrous skarn-magnetite stage (Ⅱ) were mainly derived from magmatic water, while the later fluids during the quartz-sulfide stage (Ⅲ) and the carbonate stage (Ⅳ) were mainly from magmatic water mixed with small amounts of meteoric water. Various types of fluid inclusions, including abundant vapor- or liquid-rich two-phase aqueous inclusions, daughter minerals-bearing mul tiphase inclusions, CO_2-H_2O inclusions, and less abundant liquid inclusions, vapor inclusions and melt inclusions, are present in hydrothermal minerals of different stages. The liquid-vapor fluid inclusions are mainly composed of H_2O, with significant amounts of CO_2 and a small amount of CH_4. In the opa que-bearing fluid inclusions, the hematite and fahlore (tetrahedrite) were identified. The homogenization temperature of the aqueous fluid inclusions decreases from Stage Ⅰ (520-410 ℃), through Stage Ⅱ (430-340 ℃) and III (250-190 ℃), to Stage Ⅳ (190-130 ℃). The coexistence of melt inclusions with simulta neously trapped vapor- or liquid-rich two-phase aqueous inclusions and daughter minerals-bearing mul tiphase inclusions in garnet, diopside and epidote of Stages Ⅰ andⅡ suggests an immiscibility between silicate melt and hydrothermal fluid. It is an effective mechanism on scavenging and transporting ore-forming components from magmas. The aqueous fluid inclusions with various vapor/liquid ratios (from <10% to >65%) commonly coexist with simultaneously trapped liquid inclusions, vapor inclusions, daugh ter minerals-bearing multiphase inclusions and CO_2-H_2O inclusions in the quartz of Stage Ⅲ, and the dif ferent kinds of the fluid inclusions have similar homogenization temperatures. This indicates that the boiling - another kind of immiscibility, widely took place during Stage Ⅲ. It resulted in the precipitation and enrichment of gold, copper and iron.
机译：流体包裹体和H-0同位素研究为成矿流体的来源提供了证据，并有助于识别两种类型的不混溶性及其与矿化的关系。氢氧同位素地球化学表明，无水矽卡岩阶段（Ⅰ）和含水矽卡岩-磁铁矿阶段（Ⅱ）早期成矿流体主要来自岩浆水，而石英硫化物阶段较晚的成矿流体（Ⅰ）。 Ⅲ）和碳酸盐阶段（Ⅳ）主要来自岩浆水和少量的流水。热液矿物中存在各种类型的流体包裹体，包括大量富蒸气或富液体的两相含水包裹体，含子矿的多相包裹体，CO_2-H_2O包裹体以及较不丰富的液态包裹体，蒸气包裹体和熔融包裹体。不同阶段。气液包裹体主要由H_2O组成，其中CO_2含量较高，CH_4含量较低。在不透明的含油流体包裹体中，鉴定出赤铁矿和辉石（四面体）。水性夹杂物的均质温度从第一阶段（520-410℃）下降到第二阶段（430-340℃）和第三阶段（250-190℃），再到第四阶段（190-130℃）。熔融夹杂物与同时捕获的富汽相或液相富集的两相水相夹杂物和含子矿物的多相夹杂物在阶段Ⅰ和阶段Ⅱ的石榴石，透辉石和附子中共存，表明硅酸盐熔体与热液之间不混溶。它是清除和运输岩浆中成矿成分的有效机制。在Ⅲ期石英中，具有各种气液比（<10％到> 65％）的含水流体夹杂物通常与同时捕获的液体夹杂物，蒸气夹杂物，含矿物矿物的多相夹杂物和CO_2-H_2O夹杂物共存，并且不同种类的流体包裹体具有相似的均质温度。这表明在第三阶段广泛发生了沸腾（另一种不混溶性）。它导致金，铜和铁的沉淀和富集。

著录项

  • 来源
    《Journal of Asian earth sciences》 |2011年第2期|p.83-96|共14页
  • 作者

    Y.M. Zhang; X.X. Gu; L Liu; S.Y. Dong; K. Li; B.H. Li; P.R. Lv;

  • 作者单位

    State Key Laboratory of Geological Processes and Mineral Resources. China University of Geosciences (Beijing), Beijing 100083. China;

    State Key Laboratory of Geological Processes and Mineral Resources. China University of Geosciences (Beijing), Beijing 100083. China;

    State Key Laboratory of Geological Processes and Mineral Resources. China University of Geosciences (Beijing), Beijing 100083. China;

    State Key Laboratory of Geological Processes and Mineral Resources. China University of Geosciences (Beijing), Beijing 100083. China,College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China;

    Sichuan Xinye Mining Investment Co., Ltd., Chengdu 610041, China;

    College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China;

    State Key Laboratory of Geological Processes and Mineral Resources. China University of Geosciences (Beijing), Beijing 100083. China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    immiscibility; boiling; fluid inclusion; h-0 isotopes; yinan au-cu-fe deposit; shandong;

    机译：不混溶沸腾流体包裹体h-0同位素沂南铜铁矿床山东;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号