ArFレーザー局所分析法による流体包有物中の流体の酸素同位体比測定法の開発

• Project/Area Number: 17K05699
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Petrology/Mineralogy/Economic geology
• Research Institution: Akita University
• Principal Investigator: 石山 大三 秋田大学, 国際資源学研究科, 教授 (30193361)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Granted (Fiscal Year 2018)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000); Fiscal Year 2017: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 流体包有物 / 酸素同位体比 / レーザーアブレーション / 流体の起源 / 元素運搬プロセス / エキシマ-レーザー

Outline of Annual Research Achievements

本研究は，地下深部からの流体の起源，深部での流体の混合，レアメタル等の金属元素の起源・運搬プロセスを解明するための手法開発の研究である．具体的には，ArFエキシマレーザーを使用して鉱物に細孔を掘削し流体包有物の流体を取り出し，流体の主成分である水の酸素同位体比を測定する手法開発の研究である．
H29年度の本実験装置の反応容器の体積の縮小化に引き続き，H30年度には，前年度に課題となった反応容器等からの吸着水の抑制方法について検討を試みた．検討に先立ち，H29年度の研究の後半で破損したエキシマレーザー装置の発生部の原因特定と修理を行った．その後，Chamberを大気に開放し，十分に排気後，F2を約0.2気圧入れた後，数回F2を入れ替えた後，非凝縮性ガスとCO2（Chamberの中ではH2O）の量を検討した．その結果，非凝縮性ガスは0.014μmol, CO2は，0.12μmolの量であった．これらのことから，Chamberの窓ガラスとF2間の反応が無いことが確認された．また，F2を約0.2気圧入れて，長時間放置すると脱ガスが続き，脱ガス量は，平均して3時間で上記の量になることが確認された．F2を反応容器に満たすことで，H2Oの容器からのcontaminationを0.1μmol程度まで下げることが可能であることが明らかになった．今後の課題として，流体包有物から液体を抽出するために試料をlaserで照射したときに，新たに鉱物から脱水するH2Oの影響を検討することが必要であると考えられる．

Current Status of Research Progress

3: Progress in research has been slightly delayed.

Reason

H30年度の研究の中で実験装置の修理（部品の海外発注）のためとF2雰囲気下で反応を行わせる反応容器からの脱水問題の解決に時間がかかり，実験の進捗に遅れが生じた．

Strategy for Future Research Activity

容器からの吸着水の影響が大きいため，容器の予備加熱を行い，常温F2雰囲気下での場合との比較を行い，吸着水等の影響を低減する．また，本測定法の検出限界を見積もるために，ガラス容器に封入した酸素同位体組成既知の少量の水（H2Oとして千～数十μモル）を用意し，それらの水について本手法を適用し分析を行い分析値の検討を行う．その後，水熱合成装置で作成した大型流体包有物や天然鉱物試料中の大型流体包有物について分析を行う．

Research Products

• [Journal Article] 秋田県田沢湖の堆積物のSiO2，Al2O3，Fe2O3，Pb，As含有量の特徴． (2019)
  • Author(s): 石黒卓哉・石山大三・世良耕一郎
  • Journal Title: NMCC2017年度共同利用研究成果報文集 Volume: 24 Pages: 93-97
• [Journal Article] Mobility and natural attenuation of metals and arsenic in acidic waters of the drainage system of Timok River from Bor copper mines (Serbia) to Danube River (2018)
  • Author(s): Dordievski Stefan、Ishiyama Daizo、Ogawa Yasumasa、Stevanovic Zoran
  • Journal Title: Environmental Science and Pollution Research Volume: 25 Pages: 25005-25019
  • DOI: 10.1007/s11356-018-2541-x
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Factors Controlling the Fractionation and Seasonal Mobility Variations of Ga and In in Systems Impacted by Acidic Thermal Waters : Effects of Thermodynamics and Bacterial Activity (2018)
  • Author(s): Yasumasa Ogawa, Daizo Ishiyama, Naotatsu Shikazono, Koichi Suto, Chihiro Inoue, Noriyoshi Tsuchiya, Bernhardt Saini-Eidukat, Scott A Wood
  • Journal Title: Environ. Sci. Pollution Res. Volume: 24 Pages: 5-25
  • DOI: 10.1007/s10498-018-9328-z
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Copper Upgrading and Recovery Process from Mine Tailing of Bor Region, Serbia Using Flotation (2018)
  • Author(s): Han, B., Altansukh, B., Haga, K., Stevanovic, Z., Jonovic, R., Avramovic, L., Urosevic, D., Takasaki, Y., Masuda, N., Ishiyama, D. and Shibayama, A.
  • Journal Title: Int. J. Soc. Mater. Eng. Resour Volume: 352 Issue: 2 Pages: 192-203
  • DOI: 10.5188/ijsmer.20.225
  • NAID: 130005106868
  • ISSN: 1347-9725, 1884-6629
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Characteristics of Cu-Mo mineralization in the Chatree mining area, Central Thailand. (2018)
  • Author(s): Tangwattananukul, T. and Ishiyama, D.
  • Journal Title: Resource Geology Volume: 68
  • NAID: 40021611062
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Geology and geochemical characteristics of the Xiajinbao gold deposit in the Hebei Province, China. (2018)
  • Author(s): Li, H., Ishiyama, D., Zhang, Y. and Shao, Y.
  • Journal Title: Journal of Mineralogical and Petrological Sciences Volume: 113
  • NAID: 130006407028
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Vertical variation of lead content in sediment collected from man-made Tamagawa Dam lake in Akita Prefecture, Japan. (2018)
  • Author(s): Pham, Q. M., Ishiyama, D., Sato, H. and Ogawa, Y.
  • Journal Title: Resource Geology Volume: 印刷中
  • NAID: 40021582785
• [Journal Article] Origin of Zn-Pb-Sb-Au mineralization adjacent to the Paleoproterozoic Boliden Au-rich VMS deposit, Sweden: Evidence from Petrographic and Oxygen Isotope Characteristics (2018)
  • Author(s): Adomako-Ansah, K., Ishiyama, D. and Allen, R.
  • Journal Title: Mineralium Deposita Volume: 印刷中
• [Journal Article] Nature of ore-forming fluid and formation conditions of BIF-hosted gold mineralization in the Archean Amalia Greenstone Belt, South Africa: Constraints from fluid inclusion and stable isotope studies. (2017)
  • Author(s): Adomako-Ansah, K., Mizuta, T., Ishiyama, D. and Hammond, N. Q.
  • Journal Title: Ore Geology Reviews Volume: 89
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Significance of integrated researches based on the environmental evaluation and metal recovery from mining waste materials with special reference to the role of environmental evaluation. (2018)
  • Author(s): Daizo Ishiyama, Yasumasa Ogawa, Stefan Dordievski, Nobuyuki Masuda, Atsushi Shibayama, Zoran Stevanovic and Ljubisa Obradovic
  • Organizer: Proceedings of International SATREPS conference, Mining and Environment in Future
  • Int'l Joint Research
• [Presentation] An approach to find advanced methods for solution of problems related mining activities in Bor mining area, Serbia. (2018)
  • Author(s): Daizo Ishiyama, Nobuyuki Masuda, Atsushi Shibayama, Zoran Stevanovic, Ljubisa Obradovic, Vladan Marinkovic, Radmila Markovic, Ljiljana Avramovic, Vojka Gardic
  • Organizer: Proceedings of 50th International October Conference on Mining and Metallurgy
  • Int'l Joint Research / Invited
• [Presentation] The Fate of Heavy Metals in Acidic Rivers and Sedimentation Mechanism (2018)
  • Author(s): Ogawa Y, Ishiyama D, Dordievski S, Saini-Eidukat B, Wood S and Gammons C
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Spatial Distribution and Mobility of Elements in River Water and River Bed Sediments from Eastern Serbia (2018)
  • Author(s): Dordievski S, Ishiyama D, Ogawa Y and Stevanovic Z
  • Organizer: Goldschmidt Conference
  • Int'l Joint Research
• [Presentation] Mining integrated sustainability. (2018)
  • Author(s): Zoran Stevanovic, Daizo Ishiyama, Nobuyuki, Masuda, Atsushi, Shibayama, Vladan Marinkovic, Radmila Markovic and Ljiljana Avramovic
  • Organizer: Proceedings of International SATREPS conference, Mining and Environment in Future
  • Int'l Joint Research
• [Presentation] Fluvial transport of flotation tailings and chemically precipitated metals from Bor copper mines toward the Danube River. (2018)
  • Author(s): Stefan Dordievski, Daizo Ishiyama, Yasumasa Ogawa, Zoran Stevanovic, Ljubisa Obradovic, Milan Jovanovic
  • Organizer: Proceedings of International SATREPS conference, Mining and Environment in Future
  • Int'l Joint Research
• [Presentation] セルビア国ボール鉱山地域での環境解析と金属回収のシステム化と環境修復への仕組み作り． (2018)
  • Author(s): 石山大三・増田信行・Z. Stevanovic・柴山敦・佐藤比奈子・川原谷浩・若狭幸
  • Organizer: 日本資源地質学会第68回年会講演会
• [Presentation] 秋田県田沢湖の堆積物の岩相と地球化学的特徴． (2018)
  • Author(s): 石黒卓哉・石山大三
  • Organizer: 日本資源地質学会第68回年会講演会
• [Presentation] 秋田県玉川温泉大噴泉の温泉水の硫黄およびSr同位体比の特徴． (2018)
  • Author(s): 石山大三・内谷繁央・佐藤比奈子・千葉仁・松葉谷治
  • Organizer: 日本資源地質学会第68回年会講演会
• [Presentation] Mineralogical and geochemical characteristics of weathered gneiss and granitoids, associated with REE enrichment in the Chilwa Alkaline Province, Malawi. (2017)
  • Author(s): Nyirongo, M., Ishiyama, D. and Sato, H.
  • Organizer: 資源地質学会第67回年会講演会
• [Presentation] Petrological and geochemical characteristics of the granitic rocks and andesitic volcanic rocks in Kamaishi Cu-Fe skarn deposit, Iwate Prefecture Japan. (2017)
  • Author(s): Rakotondravaly, D. A. and Ishiyama, D.
  • Organizer: 資源地質学会第67回年会講演会
• [Presentation] Characteristics of hydrothermal alteration of water dominant well and dry steam well of the Uenotai geothermal field, Akita Prefecture. (2017)
  • Author(s): Chalid, I. and Ishiyama, D.
  • Organizer: 日本地熱学会平成29年学術講演会
• [Presentation] Transport and speciation of trace metals in Tama-Omono River System in Akita Prefecture, Japan. (2017)
  • Author(s): Pham, Q. M, Ishiyama, D., Ogawa, Y. and Fukuyama, M.
  • Organizer: Goldschmidt Conference,
  • Int'l Joint Research