*Syaiful Hilal¹、Ryohei Takahashi²、Andrea Agangi²、Pearlyn Manalo²、Jonathan Tandang Macuroy⁵、Manuel Augusto Manuel Nopeia⁵、Hinako Sato²、Mega Fatimah Rosana³、Abdul Bari⁴、Bayuaji Jokosatriyo⁴、Bronto Sutopo⁴ (1.Graduate School of International Resource Sciences, Akita Univ.; Geomin unit, PT Aneka Tambang Tbk、2.Graduate School of International Resource Sciences, Akita Univ.、3.Faculty of Geological Engineering, Padjadjaran Univ.、4.Geomin unit, PT Aneka Tambang Tbk、5.Center for Regional Revitalization in Research and Education, Akita Univ.)

*Muhammad Arba Azzaman^1,4、Ryohei Takahashi¹、Andrea Agangi¹、Pearlyn Manalo¹、Hinako Sato¹、Manuel Augusto Manuel Nopeia²、Arifudin Idrus³、Doly R Simbolom⁵ (1.Graduate School of International Resource Sciences, Akita Univ.、2.Center for Regional Revitalization in Research and Education, Akita Univ.、3.Department of Geological Engineering, Univ. Gadjah Mada、4.Department of Geological Engineering, Halu Oleo Univ.、5.PT Sumber Energi Jaya)

*Hertz Balmater¹、Ryohei Takahashi¹、Hinako Sato¹、Andrea Agangi¹、Pearlyn Manalo¹、Jillian Aira Gabo-Ratio³、Graciano Yumul Jr.² (1.Akita University - Graduate School of International Resource Sciences - Economic Geology Lab、2.Cordillera Exploration Company, Incorporated.、3.University of the Philippines Diliman - National Institute of Geological Sciences)

*Daher Ali Hassan¹、Ryohei Takahashi¹、Hinako Sato¹、Andrea Agangi¹、Pearlyn Manalo¹ (1.Graduate School of International Resources Sciences, Akita University, Akita, Japan)

*Enrico Gilrandy Wahyu Suharjo¹、Ryohei Takahashi¹、Andrea Agangi¹、Pearlyn Manalo¹、Hinako Sato¹、Syafrizal Syafrizal²、Mochamad Slamet Sugiharto³、Anton Murtono³ (1.Graduate School of International Resource Sciences, Akita University, Japan、2.Faculty of Mining and Petroleum Engineering, Bandung Institute of Technology, Indonesia、3.Exploration Division, PT Timah, Indonesia)

*Mirna Mariana¹、Ryohei Takahashi¹、Andrea Agangi¹、Pearlyn Manalo¹、Iwan Setiawan²、David Victor Mamengko³、Hinako Sato¹ (1.Graduate School of International Resources Science, Akita University, Akita, Japan、2.Research Center for Geological Resources, National Research and Innovation Agency, Bandung, Indonesia、3.Department of Geology, Faculty of Mining and Petroleum Engineering, University of Papua, Manokwari, Papua)

*Tomy Hidayat Herawan¹、Ryohei Takahashi¹、Andrea Agangi¹、Pearlyn Manalo¹、Hinako Sato¹、Manuel Augusto Manuel Nopeia¹、Arifudin Idrus²、Andi Pahlevi³ (1.Akita University、2.Universitas Gadjah Mada、3.Merdeka Copper Gold)

*古屋 智章¹、高柳 栄子¹、荒岡 大輔²、石田 章純¹、渡邉 由美子¹、掛川 武¹ (1.東北大学理学研究科地学専攻、2.産業技術総合研究所地圏資源環境研究部門)

*瀬野 洸太朗¹、越後 拓也¹、渡辺 寧¹、青木 翔吾¹、板野 敬太²、昆 慶明³、左部 翔大³ (1.秋田大学大学院国際資源学研究科、2.秋田大学大学院理工学研究科、3.産業技術総合研究所 地質調査総合センター)

*長谷川 健太¹、富山 眞吾²、大竹 翼²、菊池 亮佑²、Godirilwe Joseph³ (1.北海道大学工学部環境社会工学科資源循環システムコース環境地質学研究室、2.北海道大学 大学院工学研究院 環境循環システム部門、3.北海道大学 大学院工学院 環境循環システム専攻)

*天谷 宇志¹、黒澤 正紀² (1.産業技術総合研究所地質調査総合センター、2.筑波大学生命環境系)

*後藤 晶¹、山田 泰広¹、江川 浩輔¹ (1.九州大学)