Near-infrared microscopic observation and gas composition analysis of fluid inclusions for hydrothermal deposits - an application to exploration

2023 Fiscal Year Research-status Report

• Project/Area Number: 21K04960
• Research Institution: Akita University
• Principal Investigator: 高橋 亮平 秋田大学, 国際資源学研究科, 准教授 (10396286)
• Co-Investigator(Kenkyū-buntansha): AGANGI ANDREA 秋田大学, 国際資源学研究科, 教授 (20840812) ; 今井 亮 九州大学, 工学研究院, 教授 (90223304) ; Manalo Pearlyn 秋田大学, 国際資源学研究科, 助教 (50895480)
• Project Period (FY): 2021-04-01 – 2025-03-31
• Keywords: 熱水鉱床 / 流体包有物 / 近赤外顕微鏡観察 / 安定同位体 / Tujuh Bukit鉱床 / Mankayan地域 / Murchison緑色岩帯

Outline of Annual Research Achievements

令和5年度に実施した研究は、以下の通りである。１）菱刈金鉱床で地質調査を行い、輝安鉱および石英脈などの鉱石を採取、流体包有物観察のための両面研磨薄片の作成と近赤外顕微鏡観、海外共同研究者の協力による流体包有物ガス組成の分析を行った。２）インドネシア・Tujuh Bukit銅-金鉱床で地質調査を行い、鉱石試料を採取、顕微鏡観察、流体包有物マイクロサーモメトリーおよびガス組成分析、硫黄同位体分析を行った。３）北海道北部・雄武町の北隆鉱床周辺の探鉱試錐に着脈した石英脈中の脈石鉱物および鉱石鉱物を対象に顕微鏡観察、SEM-EDS/CL分析、EPMA分析、LA-ICP-MS分析、流体包有物分析を行った。４）フィリピン・Mankayan地域のChristine鉱体を対象に熱水変質岩と鉱脈のサンプルを採取し、顕微鏡観察、全岩化学分析、各種鉱物のEPMA分析、流体包有物マイクロサーモメトリー分析、硫黄同位体分析を行った。５）南アフリカ・Murchison緑色岩帯のアンチモン-金鉱床を対象に地質調査を行い、特に炭酸塩鉱物の顕微鏡観察と化学組成分析を行った。６）この他に関連する研究として、ナミビア北西部の複数のCu-Ag鉱徴地、ボツワナの緑色岩帯中に胚胎する複数の金鉱床、タイの複数の錫-タングステン鉱床、インドネシアの複数の錫、銅、金鉱床/鉱徴地、秋田県の複数の黒鉱鉱床等を対象とする地質調査の実施とサンプル採取、各種室内実験と解析を行った。これらの研究対象の大部分は探鉱または開発プロジェクトが行われている鉱床、鉱徴地であり、新規鉱体の探査や探鉱に有用な情報を提供するために、室内実験データに基づきそれぞれの鉱床/鉱徴地の形成条件とメカニズムの解析を行った。

Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

当初予定していた5つ全ての研究対象の鉱床/鉱徴地の研究に着手済みであり、それ以外にも複数の熱水鉱床を研究対象に加えた研究を進めている。流体包有物のガス組成分析を含む各種室内実験と解析をスムーズに行った。

Strategy for Future Research Activity

複数の熱水鉱床および鉱徴地の鉱物組み合わせや化学組成などの基礎的な実験データが得られたので、現在までの研究成果を学会発表、論文投稿などにより成果公開し、鉱物の微量成分分析、流体包有物のマイクロサーモメトリーとガス組成分析、安定同位体分析などの応用的な室内実験を行うとともに、それぞれの鉱床の形成条件とメカニズムの解析を行う。

Causes of Carryover

当初の予定に加えて、新たな研究対象の鉱床、鉱徴地の研究に着手したため、研究成果を最大化するために研究費の次年度使用額が生じた。次年度は、追加の室内実験、データ解析、研究成果公開などに予算を使用する。

Research Products

• [Int'l Joint Research] ウエスタン大学(カナダ)
  • Country Name: CANADA
  • Counterpart Institution: ウエスタン大学
• [Int'l Joint Research] フィリピン大学(フィリピン)
  • Country Name: PHILIPPINES
  • Counterpart Institution: フィリピン大学
• [Int'l Joint Research] タイ鉱物資源局/カセサート大学/チュラロンコン大学(タイ)
  • Country Name: THAILAND
  • Counterpart Institution: タイ鉱物資源局/カセサート大学/チュラロンコン大学
• [Int'l Joint Research] ボツワナ大学/ボツワナ国際科学技術大学(ボツワナ)
  • Country Name: BOTSWANA
  • Counterpart Institution: ボツワナ大学/ボツワナ国際科学技術大学
• [Int'l Joint Research] バンドン工科大学/ガジャマダ大学(インドネシア)
  • Country Name: INDONESIA
  • Counterpart Institution: バンドン工科大学/ガジャマダ大学
• [Int'l Joint Research]
  • # of Other Countries: 2
• [Journal Article] Textural-compositional evolution of pyrite and metal remobilization during low-grade metamorphism of metapelite: Contribution to gold mineralization in the Luk Ulo Complex, Central Java, Indonesia (2024)
  • Author(s): Renaldi Suhendra, Ryohei Takahashi, Andrea Agangi, Akira Imai, Hinako Sato, and Nugroho Imam Setiawan
  • Journal Title: Ore Geology Reviews Volume: 166 Pages: 105966
  • DOI: 10.1016/j.oregeorev.2024.105966
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mineralogy and geochemistry of the Mupane and Shashe gold deposits of the Tati Greenstone Belt (NE Botswana): Implications for mineral deposit models and exploration (2024)
  • Author(s): Kelebogile Phili, Thierry Bineli Betsi, Tebogo Kelepile, Ryohei Takahashi, and Lebogang Mokane
  • Journal Title: Economic Geology Volume: 119 Pages: 551-571
  • DOI: 10.5382/econgeo.5046
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Geology and geochemistry of the gold mineralization at the Namicupo prospect, Mozambique Belt, northeastern Mozambique (2023)
  • Author(s): Manuel Nopeia, Akira Imai, Ryohei Takahashi, Kotaro Yonezu, Andrea Agangi, Daud Jamal, Pearlyn Manalo, Thomas Tindell and Hinako Sato
  • Journal Title: Journal of Geochemical Exploration Volume: 249 Pages: 107220
  • DOI: 10.1016/j.gexplo.2023.107220
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] The age and origin of the Ruwai polymetallic skarn deposit, Indonesia: evidence of Cretaceous mineralization in the Central Borneo Metallogenic Belt (2023)
  • Author(s): Cendi D.P. Dana, Andrea Agangi, Arifudin Idrus, Cyril Chelle-Michou, Chun-Kit Lai, Mizuki Ishida, Marcel Guillong, Ignacio Gonzlvarez, Ryohei Takahashi, Moei Yano, Kazuhide Mimura, Junichiro Ohta, Yasuhiro Kato, Doly R. Simbolon, and Xiao-Ping Xia
  • Journal Title: Economic Geology Volume: 118 Pages: 1341-1370
  • DOI: 10.5382/econgeo.5009
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Presentation] Petrographic and geochemical characteristics of the Okohongo copper-silver deposit, Kaoko Belt, Kunene region, Namibia (2024)
  • Author(s): Abner Nghoongoloka, Ryohei Takahashi, Pearlyn Manalo, Andrea Agangi, Hinako Sato, Manuel Nopeia, Nigel Blamey, Rob Bowell
  • Organizer: 日本地球惑星科学連合2024年大会
• [Presentation] Mineral textures and chemistry of the Utori vein group in the Osarizawa epithermal deposit, Akita, Japan (2024)
  • Author(s): Jonathan Macuroy, Nozomi Aoki, and Ryohei Takahashi
  • Organizer: 日本地球惑星科学連合2024年大会
• [Presentation] Geochemistry of antimony and tungsten mineralization of the Doi Ngom deposit, northern Thailand (2024)
  • Author(s): Karn Phountong, Ryohei Takahashi, Punya Charusiri, Andrea Agangi, Pearlyn Manalo, Ladda Tangwattananukul, and Hinako Sato
  • Organizer: 日本地球惑星科学連合2024年大会
• [Presentation] Mineralogical, geochemical, and fluid inclusion characteristics of the Neoarchean gold deposits in the Tati and Vumba Greenstone Belts of NE Botswana (2024)
  • Author(s): K. Phili, R. Takahashi, A. Agangi, H. Sato, P. C. Manalo, L. Mokane, M. Nopeia, N. Blamey, T.B. Betsi, T. Kelepile and Z. B. Bagai
  • Organizer: 日本地球惑星科学連合2024年大会
• [Presentation] The characterization and paragenesis of the gold mineralization in gold deposits of the Vumba Greenstone Belt of northeastern Botswana (2024)
  • Author(s): Lebogang Mokane, Andrea Agangi, Ryohei Takahashi, Pearlyn Manalo (Akita Univ), Thierry Bineli Betsi, Zibisani Bagai, Tebogo Kelepile, Kelebogile Phili, Manuel Nopeia
  • Organizer: 日本地球惑星科学連合2024年大会
• [Presentation] Chemistry and sulfur isotope compositions of black ores of the Furutobe and Nurukawa deposits, Akita, Japan (2024)
  • Author(s): Manuel Nopeia, Ryohei Takahashi, Andrea Agangi, Pearlyn Manalo and Hinako Sato
  • Organizer: 日本地球惑星科学連合2024年大会
• [Presentation] Cathodoluminescence and trace element composition of the ore-bearing crustiform veins in the Hokuryu Ag-Au deposit, Hokkaido, Japan (2024)
  • Author(s): O.B. Soberano, R. Takahashi, P.C. Manalo, and A. Agangi
  • Organizer: 日本地球惑星科学連合2024年大会
• [Presentation] Sulfur and lead isotopic compositions of massive sulfides from the Furutobe and Nurukawa Kuroko deposits, Akita, Japan (2024)
  • Author(s): M. Nopeia, A. Agangi, R. Takahashi, P. Manalo and H. Sato
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Fluid inclusion study of mineralized and barren veins in the Hokuryu epithermal Ag-Au deposit, Hokkaido, Japan (2024)
  • Author(s): O. B. Soberano, R. Takahashi, P. Manalo, A. Agangi, H. Sato, and M. Nopeia
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineralogy, sulfur isotopes, and fluid inclusion characteristics of the Neoarchean gold deposits in the Tati and Vumba Greenstone Belts of NE Botswana (2024)
  • Author(s): K. Phili, R. Takahashi, A. Agangi, P. Manalo, L. Mokane, M. Nopeia, H. Sato, N. Blamey, T. Enno, T. B. Betsi, T. Kelepile, Z. B. Bagai and K. Baliki
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Texture and geochemistry of garnet from the Somerset and Arab gold deposits, Vumba Greenstone Belt, northeastern Botswana (2024)
  • Author(s): L. Mokane, A. Agangi, R. Takahashi, K. Phili, P. Manalo, M. Nopeia, T. Bineli Betsi, T. Kelepile and Z. Bagai
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Trace elements and ages of magmatic zircon in the Late Triassic granite, Bangka Island, Indonesia: Implication for the formation of primary tin deposits (2024)
  • Author(s): E. G. W. Suharjo, R. Takahashi, A. Agangi, M. Elburg, Syafrizal, P. Manalo, M. S. Sugiharto and A. Murtono
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineral chemistry of wolframite, stibnite and fluorite from the Doi Ngom deposit, Northern Thailand (2024)
  • Author(s): K. Phountong, R. Takahashi, A. Agangi, P. Manalo, H. Sato, P. Charusiri and L. Tangwattananukul
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Textures and geochemistry of magmatic-hydrothermal zircon from the Pilok tin-tungsten deposit, Kanchanaburi, Thailand (2024)
  • Author(s): M. Intachai, R. Takahashi, A. Agangi, M. A. Elburg, P. Charusiri and P. Manalo
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineralogy and geochemistry of the Hiwong skarn iron-base metal deposit in Taliabu Island, Indonesia (2024)
  • Author(s): H. M. H. Wicaksono, R. Takahashi, M. Nopeia, P. Manalo, A. Agangi, H. Sato, A. Idrus, E. Ernowo and H. Wachyudi
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Characteristics of the Christine porphyry copper prospect in Lepanto, Mankayan, Philippines (2024)
  • Author(s): Y. Awano, P. Manalo, R. Takahashi, A. Agangi, H. Sato, A. Imai, S. Nohara and L. Subang
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Fluid inclusion and sulfur isotope studies of the Tujuh Bukit porphyry copper and gold deposit, Banyuwangi, East Java, Indonesia (2024)
  • Author(s): R. Takeda, R. Takahashi, R. Taube, M. H. Rahadi, R. Widisaputra, A. Idrus, N. Blamey, T. Enno, A. Agangi, P. Manalo and H. Sato
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Characteristics of the epithermal gold mineralization at the Christine orebody in Lepanto, Mankayan, Philippines (2024)
  • Author(s): S. Nohara, P. Manalo, R. Takahashi, A. Agangi, H. Sato, Y. Awano, A. Imai and L. Subang
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Formation conditions of the epithermal veins in the Masara Gold District, Philippines: Constraints from mineral chemistry and fluid inclusion studies (2024)
  • Author(s): P. Manalo, A. Sato, O. Soberano, M. Intachai, M. Nopeia, J. Macuroy, R. Takahashi, A. Agangi, J. Gabo-Ratio and J. A. V. Amoroso
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineralogy, geochemistry, and fluid inclusion studies of the Utori vein group in the Osarizawa epithermal deposit, Akita, Japan (2024)
  • Author(s): J. Macuroy, N. Aoki and R. Takahashi
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Characteristics of the copper-silver mineralization in the Epunguwe prospect, Kaoko Belt, Kunene region, Namibia (2024)
  • Author(s): A. Nghoongoloka, R. Takahashi, P. Manalo, A. Agangi, H. Sato, M. Nopeia, N. Blamey, T. Enno and R. Bowell
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Geochemistry and fluid inclusion characteristics of the Gudang Handak vein in the Pongkor epithermal Au-Ag deposit, West Java, Indonesia (2024)
  • Author(s): S. Hilal, R. Takahashi, A. Agangi, P. Manalo, M. Nopeia, J. T. Macuroy, H. Sato, M. F. Rosana, A. Bari, B. Sutopo and S. Besari
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Petrography and geochemistry of hydrothermal veins in Cordon, northern Luzon, Philippines (2024)
  • Author(s): H. Balmater, R. Takahashi, H. Sato, P. Manalo, A. Agangi, J. A. Gabo-Ratio and G. Yumul, Jr.
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineralogical and geochemical characteristics of the Carlin-type gold deposits in the Ratatotok District, North Sulawesi, Indonesia (2024)
  • Author(s): M. A. Azzaman, R. Takahashi, A. Agangi, P. Manalo, H. Sato, M. Nopeia, A. Idrus and D. R. Simbolon
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineralogical characteristics of copper ores from the Otavi Mountainland, northern Namibia (2024)
  • Author(s): T. Miura, R. Takahashi, A. Agangi, P. Manalo and H. C. Brunette
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineralogy and geochemistry of black and yellow ores at the Matsumine Kuroko deposit, Akita, Japan (2024)
  • Author(s): A. Didari, A. Agangi, R. Takahashi, P. Manalo, H. Sato and M. Nopeia
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineralogy and rare earth element patterns of the Morobe Granodiorite, Papua New Guinea (2024)
  • Author(s): B. Poke, R. Takahashi, A. Agangi, P. Manalo and H. Sato
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineralogy and geochemistry of the syenite-hosted Quemaldero porphyry Cu-Au prospect in Cordon, Isabela, Luzon, Philippines (2024)
  • Author(s): A. Yaginuma, P. Manalo, R. Takahashi, A. Agangi, H. Sato, J. Gabo-Ratio, G. P. Yumul Jr. and A. Imai
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Geological characteristics of the Partolang volcanogenic massive sulfide prospect, Wetar, Indonesia (2024)
  • Author(s): T. H. Herawan, R. Takahashi, A. Agangi, P. Manalo, A. Idrus and M. Naiola
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Mineralogy and geochemical characteristics of sediment-hosted Cu-Au mineralization at the Chirumbu prospect, Koko Belt, NW Namibia (2024)
  • Author(s): E. Iiyambo, R. Takahashi, A. Agangi, P. Manalo, M. Nopeia, A. Nghoongoloka and J. Shilunga
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Texture and compositions of carbonates associated with Sb-Au deposits of the Murchison Greenstone Belt, South Africa (2024)
  • Author(s): K. Kageyama, A. Agangi, R. Takahashi, P. Manalo and V. Mashoene
  • Organizer: 資源地質学会第73回年会講演会
• [Presentation] Cathodoluminescence, trace element and fluid inclusion studies of the ginguro-bearing crustiform veins in the Hokuryu Ag-Au deposit, Hokkaido, Japan (2024)
  • Author(s): O.B. Soberano, R. Takahashi, P.C. Manalo, and A. Agangi
  • Organizer: The 37th International Geological Congress 2024
  • Int'l Joint Research
• [Remarks] 金属鉱床学研究室
  • URL: http://www.gipc.akita-u.ac.jp/~kinsho/TOP.html