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首页> 外文期刊>Journal of Asian earth sciences >Fluid inclusion characteristics of hematite-bearing quartz vein from the Daenam mine, Republic of Korea
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Fluid inclusion characteristics of hematite-bearing quartz vein from the Daenam mine, Republic of Korea

机译：大韩民国Daenam矿的含赤铁矿石英脉的流体包裹体特征

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摘要

The Daenam mine, which produced over 9250 tons of iron oxide ore from 1958 to 1962, is situated in the Early Cretaceous Yeongyang subbasin of the Gyeongsang basin. It consists of two lens-shaped, hematite-bearing quartz veins that occur along faults in Cretaceous leucocratic granite. The hematite-bearing quartz veins are mainly composed of massive and euhedral quartz and hematite with minor amounts of pyrite, pyrrhotite, mica, feldspar and chlorite.rnFluid inclusions in quartz can be divided into three main types: CO_2-rich, CO_2-H_2O, and H_2O-rich. Hydrothermal fluids related to the formation of hematite are composed of either H_2O-CO_2-NaCl ± CH_4 (homogenization temperature: 262-455 ℃, salinity <7 eq. wt.% NaCl) or H_2O-NaCl (homogenization temperature: 182-266 ℃, and salinity <5.1 eq. wt.% NaCl), both of which evolved by mixing with deeply circulating meteoric water. Hematite from the quartz veins in the Daenam mine was mainly deposited by unmixing of H_2O-CO_2-NaCl ± CH_4 fluids with loss of the CO_2 + CH_4 vapor phase and mixing with downward percolating meteoric water providing oxidizing conditions.
机译：Daenam矿位于庆尚盆地的早白垩世永阳子盆地，从1958年到1962年，该矿生产了9250吨氧化铁矿。它由两条透镜状的含赤铁矿的石英脉组成，沿着白垩纪白垩纪花岗岩的断层发生。含赤铁矿的石英脉主要由块状和全面石英以及赤铁矿和少量的黄铁矿，黄铁矿，云母，长石和绿泥石组成。石英中的流体包裹体可分为三种主要类型：富CO_2，富CO_2-H_2O，和富含H_2O的物质。与赤铁矿形成有关的热液由H_2O-CO_2-NaCl±CH_4（均质温度：262-455℃，盐度<7当量％NaCl）或H_2O-NaCl（均质温度：182-266℃）组成，盐度<5.1 eq。wt。％NaCl），两者均通过与深循环的流水混合而形成。 Daenam矿山石英脉中的赤铁矿主要是通过将H_2O-CO_2-NaCl±CH_4流体解混而失去CO_2 + CH_4汽相并与向下渗滤的陨石水混合来提供氧化条件而沉积的。

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  • 来源
    《Journal of Asian earth sciences》 |2010年第2期|117-129|共13页
  • 作者

    B.C. Yoo; J.W. Yin; G.J. Lee; H.K. Lee;

  • 作者单位

    Department of Geology and Earth Environmental Sciences. Chungnam National University, Daejon 305-764, Republic of Korea;

    Geoscience Laboratories Center, China University of Geosciences, Beijing 100083, China;

    Department of Geology and Earth Environmental Sciences. Chungnam National University, Daejon 305-764, Republic of Korea;

    Department of Geology and Earth Environmental Sciences. Chungnam National University, Daejon 305-764, Republic of Korea;

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

    quartz veins; hematite; fluid inclusions; immiscibility; mixing;

    机译：石英脉;赤铁矿流体包裹体不混溶混合;

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