*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)