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Study on the Origin of Ore-Forming Fluid by Hydrogen Isotope Measurement of Fluid Inclusions

Research Project

Project/Area Number 03453057
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 鉱物学(含岩石・鉱床学)
Research InstitutionThe University of Tokyo

Principal Investigator

SHIMAZAKI Hidehiko  Univ.of Tokyo, Graduate School of Science Prof., 大学院・理学系研究科, 教授 (50013751)

Co-Investigator(Kenkyū-buntansha) SHIMIZU Masaaki  Univ.of Tokyo, Univ.Museum Assist.Prof., 総合研究資料館, 助手 (50162714)
IMAI Akira  Univ.of Tokyo, Graduate School of Science Assist.Prof., 大学院・理学系研究科, 助手 (90223304)
金田 博彰  東京大学, 工学部, 助教授 (10092181)
Project Period (FY) 1991 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥5,200,000)
Fiscal Year 1993: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1992: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1991: ¥3,000,000 (Direct Cost: ¥3,000,000)
KeywordsFluid inclusion / Ore-forming solution / Hydrogen isotopic ratio / Hydrothermal deposit / Material transport / Gold-silver deposit / Meteoric water / Magmatic water / 金鉱床 / 金・銀鉱脈 / 地下熱水系
Research Abstract

1. Sampling and Analyzes of Formation Environments : In Japanese Island Arc, young epithermal gold mineralization occurs frequently, for example the Hishikari gold deposits, and their shallow formation environments are contrasting with gold mineralization of Mesozoic time in Korea and China. Geological informations about these deposits are relatively abundant, and we selected these type of mineralizations as our main target.
2. Establishment of Technique on Hydrogen Isotope Measurement : Through many times trials, we finally decided the following conditions for obtaining hydrogen gas from natural specimens. That is : decrepitation method for the break of fluid inclusion in specimens, -40 mesh - +80 mesh for the size of pulverized specimen, BDH-metal Zn for the reduction of water to hydrogen, about thirty minutes at about 430゚C for the reduction.
3. Analysis of the Origin of Ore-forming Solutions : Obtained hydrogen isotopic composition for each mineral deposit could be grouped into two. One group is : hydrogen isotopic values of fluid inclusions fall in a quite narrow range for one deposit. The other group is : hydrogen isotopic values have quite a large variation range even for one deposit. For the former group deposits, magmatic, metamorphic, ocean or meteoric water could be assigned as an origin of water depending on the values. For the latter group deposits, mixing of two or more types of waters, and possibly boiling of the water also, could be cited as a cause of complex isotopic features.

Report

(4 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • 1991 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] Shimizu,M.: "Roquesite-bearing tin ores from tu Omodani,Ahenobe,Fukoku and Ikuno prlymetallic vein-type deposits in Inner Zone of South-western Japan." Canadian Mineral.29. 207-215 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Than Zaw: "Gas geochemistry of fluid inclusions from gold veins at Jeoneui and Samgwang,South Korea." Jour.Faculty Eng.,Univ.of Tokyo. Ser.B 41. 295-311 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shimizu,M.: "Potosiite and incaite from the Hoei mine,Japan." Mineral.Petrol.46. 155-161 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shimazaki,H.: "Oxygen isotope study of the Tsumo Cu-Zn-Fe-W skarn deposits,Japan." Resource Geol.43. 245-254 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Sakurai,W.: "Exploration of blind skarn deposit based on the minerali-zation model of the Kamioka mine,Gifu Prefecture,eentral Japan." Resource Geol.Spec.Issue. No.16. 141-150 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Imai,A.: "Sulfide grobules associated with a felsite intrusion on the Mount Kinabaln quartz monzonite,Sabah,East Malaysia:Sulfide melt immiscibility in highly silicic melt." Econ.Geol.89. 181-185 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shimizu, M.: "Roquesite-bearing tin ores from the Omodani, Akenobe, Fukoku and Ikuno polymetallic vein-type deposits in Inner Zone of southwestern Japan" Canadian Mineral. 29. 207-215 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Than Zaw: "Gas geochemistry of fluid inclusions from gold veins at Jeoneui and Samgwang, South Korea" Jour.Faculty of Eng., Univ.of Tokyo, Ser.B. 41. 295-311 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shimizu, M.: "Potosiite and incaite from the Hoei mine, Japan" Mineral.Petrol. 46. 155-161 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shimazaki, H.: "Oxygen isotope study of the Tsumo Cu - Zn - Fe - W skarn deposits, Japan" Resource Geol.43. 245-254 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Sakurai, W.: "Exploration of blind skarn deposit based on the mineralization model of the Kamioka mine, Gifu Prefecture, central Japan" Resource Geol.Spec.Issue. No.16. 141-150 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Imai, A.: "Sulfide grobules associated with a felsite intrusion in the Mount Kinabalu quartz monzonite, Sabah, East Malaysia : Sulfide melt immiscibility in highly silicic melt" Econ.Geol.89. 181-185 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] Shimazaki,H.: "Oxygen isotope study of the Tsumo Cu-Zn-Fe-W skarn deposits,Japan." Resource Geology. 43. 245-254 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Yoon,C.H.: "Sulfur isotope study of gold-silver deposits in the Republic of Korea." Resource Geology. 43. 1-10 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Sakurai,W.: "Exploration of blind skarn deposit based on the mineralization model of the Kamioka mine,Gifu Prefecture,central Japan." Resource Geology,Spec.Issue. 16. 141-150 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Kaneda,H.: "Gas chemistry and carbon isotope compositions of fluid inclusions, and carbon isotope compositions of calcite from goldーquartz veins,South Korea." Abstracts,29th Intn.Geol.Congress. 3. 742 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Shimazaki,H.: "Oxygen isotope study of the Hishikari gold vein deposits in Japn" Proc.Modern Res.Ore Genesis. 1. 1-2 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Kaneda,H.: "Gas chemistry and carbon isotope studies of fluid inclusions from some goldーsilver ore deposits in South Kurea." Proc.Modern Res.Ore Genesis. 2. 1-6 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] Shimazaki,H.: "Hydrothermal alteration of Nohi rhyolites" Geochem.Jour.

    • Related Report
      1991 Annual Research Report
  • [Publications] Shimizu,M.: "Roquesiteーbearing tin ores from the Omodani,Akenobe,Fukoku and I kuno polymetallic reinーtype deposits in Inner Zone of south western Japan." Canadian Mineral.29. 207-215 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Than Zaw: "Gas geochemistry of fenid inclusions from gold veins at Jeoreui and Samgwang,South Korea." Jour.Faculty Eng,Univ of Tokyo. Ser.B 41. 295-311 (1991)

    • Related Report
      1991 Annual Research Report

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Published: 1991-04-01   Modified: 2016-04-21  

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