Hydrothermal alteration and formational environment of the Obiro mine in the Tagawa Acidic Rocks, Uetsu region, Japan

DOI

Bibliographic Information

Other Title
  • 羽越地域、田川酸性岩類に胚胎する大広鉱山の熱水変質と生成環境

Abstract

Obiro deposit is located in the Tagawa Acidic Rocks (AR), Uetsu region, NE Japan. Drill core and ore samples have been collected from the deposit and examined by XRD, EPMA and microthermometry. The main reasons of the mineralization at the Obiro deposit are as follows; the oxidized magma intruded at a shallower level, and thereafter hydrothermal fluids were boiled, resulting to be saline. The saline fluid dissolved the metals such as Pb, Zn, Cu and Bi, and these metals precipitated by cooling accompanied by dilution of meteoric water and increasing pH, resulting in decreasing solubility.

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Details 詳細情報について

  • CRID
    1390283659840110208
  • NII Article ID
    130007786104
  • DOI
    10.14824/jakoka.2018.0_163
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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