*Abner Nghoongoloka^1,2、Ryohei Takahashi¹、Pearlyn Manalo ¹、Andrea Agangi¹、Hinako Sato¹、Manuel Nopeia³、Nigel Blamey⁴、Rob Bowell^5,6、Tavis Enno⁴ (1.Graduate School of International Resource Sciences, Akita Univ、2.Geological Survey of Namibia、3.Center for Regional Revitalization in Research and Education, Akita Univ、4.Department of Earth Sciences, Western Univ、5.Department of Earth Science Miller Hall, Queens Univ、6.SRK Consulting)

*Kelebogile Phili¹、Ryohei Takahashi¹、Andrea Agangi¹、Pearlyn Manalo¹、Hinako Sato¹、Nigel Blamey⁴、Lebogang Mokane¹、Zibisani Biza Bagai³、Thierry Bineli-Betsi²、Tebogo Kelepile²、Manuel Augusto Manuel Nopeia¹ (1.Akita Univ.、2.BIUST、3.UB、4.Univ. of Western Ontario)

*Lebogang Mokane¹、Andrea Agangi¹、Ryohei Takahashi¹、Pearlyn Manalo¹、Thierry Bineli Betsi²、Zibisani Biza Bagai³、Tebogo Kelepile²、Kelebogile Phili¹、Manuel Nopeia¹ (1.Akita Univ.、2.BIUST、3.UB)

*Omar Baculna Soberano¹、Ryohei Takahashi¹、Pearlyn Cabarubias Manalo¹、Andrea Agangi¹ (1.Akita University)

*Manuel Augusto Manuel Nopeia¹、Ryohei Takahashi²、Andrea Agangi^2,3、Pearlyn Manalo²、Hinako Sato² (1.Center for Regional Revitalization in Research and Education, Akita University, Akita 010-8502, Japan、2.Department of Earth Resource Science, Akita University, Akita 010-8502, Japan、3.Department of Geology, University of Johannesburg, Auckland Park 2006, South Africa)

*Jonathan Tandang Macuroy^1,2、Nozomi Aoki²、Ryohei Takahashi² (1.Center for Regional Revitalization in Research and Education, Akita University, Japan、2.Graduate School of International Resource Sciences, Akita University, Japan)

*Karn Phountong¹、Ryohei Takahashi¹、Punya Charusiri²、Andrea Agangi¹、Pearlyn Manalo¹、Ladda Tangwattananukul³、Hinako Sato¹ (1.Akita Univ.、2.Department of Mineral Resources、3.Kasetsart Univ.)