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Impact on researches of evolution, environmental problems and early processes of solar system by using nano-reaction analysis and natural nano-scale minerals

Research Project

Project/Area Number 16340168
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Petrology/Mineralogy/Science of ore deposit
Research InstitutionNiigata University

Principal Investigator

AKAI Junji  Niigata University, Institute of Science and Technology, Professor (30101059)

Co-Investigator(Kenkyū-buntansha) NISHI Ryoichi  Niigata University, Institute of Science and Technology, Associate Professor (80252419)
MATSUOKA Atsushi  Niigata University, Institute of Science and achnology, Professor (00183947)
FUKUHARA Haruo  Niigata University, Social Sciences and Education, Professor (50108007)
SASAGAWA Ichirou  Nihon Dentist College, Niigata Department of Dentist, Professor (00095134)
Project Period (FY) 2004 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥16,940,000 (Direct Cost: ¥16,700,000、Indirect Cost: ¥240,000)
Fiscal Year 2007: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2006: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2005: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 2004: ¥13,100,000 (Direct Cost: ¥13,100,000)
KeywordsMinerals / Inner Mongolia / Contamination of ground water by As / Marble Bar / Nano diamond / Meteorite / Organic materials / Electron Microscopy / 炭素鉱物 / 環境鉱物学 / 鉱物-生物相互作用 / ナノ鉱物 / ダイヤモンド / 鉱石鉱物 / バングラデシュ / プカンブリア / 微細組織 / ミクロ / ナノ / 環境
Research Abstract

We carried out examination on our research theme "Impact on researches of evolution, environmental problems and early processes of solar system by using nano-reaction analysis and natural nano-scale minerals." We, here, summarize the main results briefly.
1) Evolution: we examined famous Precambrian samples from Gun Flint chert which is known to have world famous unicell- fossil-like structure and samples from Marble Bar chert. They were examined mineralogical methods. The former consists of three different mineral species. This result has already been reported.
2) Environmental problem: we are now continuing research about arsenic contamination of ground water in some regions in the world. Recently we are focusing on Inner Mongolia region. Here, very characteristic sediments occur in relation to arsenic contamination of ground water. It is extremely black sand. We clarified the relationship between the color change and the dissolution of arsenic from the sediments. That is, black color is due to Iron sulfide-like materials coating on the sand surface, which is probably replaced with original iron oxide and/or hydroxides. The conditions correspond to extremely reductive environments which are produced by SRB activity. These results have been preliminarily reported. Another example about Earth's surface environment is Mn-nodules. Constituent mineral characteristics were examined and was clarified to be nano-scale structural fatures.
3) Early solar system is related t meteorite samples. We carried out detailed TEM examination for carbon minerals cotained in carbonaceous chondrite. We found many nano-diamond grains and nano- to sub-micron scale organic materials in Antarctic meteorite. We discussed about the origins and relationship to classification of meteorite and characteristics of other carbon minerals. We are going to summarize them and to publish these data.
Thus, important results have been obtained, this research year.

Report

(5 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (21 results)

All 2007 2006 2005 2004

All Journal Article (18 results) (of which Peer Reviewed: 4 results) Presentation (1 results) Book (2 results)

  • [Journal Article] 堆積物の鉱物・化学組成-中国内蒙古河套平野の地下水ヒ素汚染2007

    • Author(s)
      赤井純治, 萩原大樹, 他
    • Journal Title

      地学団体研究会専報 56

      Pages: 63-74

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] ヒ素の起源と溶出機構-中国内蒙古河套平野の地下水ヒ素汚染2007

    • Author(s)
      吉村尚久, 赤井純治, 萩原大樹, 他
    • Journal Title

      地学団体研究会専報 56

      Pages: 103-108

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Mineralogical and chemical compositions of sediments-in the Heteoplain of Inne Mongolia, China2007

    • Author(s)
      Akai, J., Hagiwara, H., Sakai, Y, Iwamoto, N
    • Journal Title

      Special Monograph of the Association for the Geological Collab oration in Japan Volume56

      Pages: 63-74

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Source and release mechanism of arsenic-in the Heteoplain of Inner Mongolia, China2007

    • Author(s)
      Yoshimura, T., Kakai, J., Hagiwara, H., Terasaki, K
    • Journal Title

      Special Monograph of the Association for the Geological Collab oration in Japan Volume56

      Pages: 103-107

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] 堆積物の鉱物・化学組成-中国内蒙古河套平野の地下水ヒ素汚染2007

    • Author(s)
      赤井純治 萩原大樹, 他
    • Journal Title

      地学団体研究会専報 56

      Pages: 63-74

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ヒ素の起源と溶出機構-中国内蒙古河套平野の地下水ヒ素汚染2007

    • Author(s)
      吉村尚久 赤井純治 萩原大樹, 他
    • Journal Title

      地学団体研究会専報 56

      Pages: 103-108

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mobilization of arsenic in groundwater of Bangladesh : evidence from an incubation study.2006

    • Author(s)
      H.M.Anawar, J.Akai, T.Yoshioka, E.Konohira, J.Y.Lee, H.Fukuhara, M.Tari Kul Alam, A.Garcia-Sanchez.
    • Journal Title

      Environmental Geochemistry and Health Volume 28.,Number 6

      Pages: 553-565

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Mineralogy of microbial fossil-like textures in the Precambrian Marble Bar chert and Gunflint Chert2006

    • Author(s)
      Junji AKAI, Shun ITO, Nozomu SEKIGUCHI, Munetomo NEDACHI
    • Journal Title

      Materials Science and Engineering : C Volume 26, Issue 4

      Pages: 613-616

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Mineralogy of microbial fossil-like textures in the Precambrian Marble Bar chert and Gunflint Chert2006

    • Author(s)
      AKAI, J., ITO, S., SEKIGUCHI, N., NEDACHI, M.
    • Journal Title

      Materials Science & Engineering : C (accepted)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Contrasting Fe Ca distribution and related microstructures in syenite alkali feldspars in Patagonia, Andes Chille2005

    • Author(s)
      Nakano S, Akai J., Shimobayashi N.
    • Journal Title

      Mineralogical Magazine 69巻(4)

      Pages: 521-535

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 観音寺花こう閃緑岩中のアルカリ長石の微細組織2005

    • Author(s)
      橋本勘, 赤井純治, 中野聰志
    • Journal Title

      地球科学 59巻

      Pages: 117-124

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 炭素鉱物の電子顕微鏡鉱物学と南極産炭素質コンドライト研究への応用2005

    • Author(s)
      青木崇行, 赤井純治
    • Journal Title

      地球科学 59巻

      Pages: 125-132

    • Related Report
      2005 Annual Research Report
  • [Journal Article] フランボイダルパイライトの20面体ドメイン構造2005

    • Author(s)
      大藤弘明, 赤井純治
    • Journal Title

      弛球科学 59巻

      Pages: 103-110

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Mineralogy of microbial fossil-like textures in the Precambrian Marble Bar chert and Gunflint Chert2005

    • Author(s)
      AKAI, J., ITO, S., SEKIGUCHI, N., NEDACHI, M.
    • Journal Title

      Materials Science & Engineering : C (In press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 田上花こう岩中のアルカリ長石の微細組織とその形成史2005

    • Author(s)
      橋本 勘, 赤井純治, 中野聰志
    • Journal Title

      岩石鉱物科学 34,1

      Pages: 1-14

    • NAID

      10013815849

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 観音寺花こう閃緑岩中のアルカリ長石の微細組織2005

    • Author(s)
      橋本勘, 赤井純治, 中野聰志
    • Journal Title

      地球科学 (印刷中)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 炭素鉱物の電子顕微鏡鉱物学と南極産炭素質コンドライト研究への応用2005

    • Author(s)
      青木崇行, 赤井純治
    • Journal Title

      地球科学 (印刷中)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] フランボイダルパイライトの20面体ドメイン構造2005

    • Author(s)
      大藤弘明, 赤井純治
    • Journal Title

      地球科学 (印刷中)

    • Related Report
      2004 Annual Research Report
  • [Presentation] Mnノジュールの電顕鉱物学(2)2007

    • Author(s)
      赤井純治・土山明・秋山茂樹
    • Organizer
      日本鉱物科学会
    • Place of Presentation
      東京大学
    • Year and Date
      2007-09-24
    • Related Report
      2007 Annual Research Report
  • [Book] 地球のなぞを追って2006

    • Author(s)
      地学団体研究会(編集委員会:編集委員長:赤井純治)
    • Total Pages
      212
    • Publisher
      大月書店
    • Related Report
      2005 Annual Research Report
  • [Book] Natural carbon nanophases.(in Russian)2004

    • Author(s)
      Shumilova T.G., Akai J.
    • Total Pages
      20
    • Publisher
      Syktyvkar : Geoprint
    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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