This paper demonstrates that modal composition analysis using micro‑XRF is highly effective for fine‑grained or weathered rocks, offering advantages over the conventional point‑counting method. The study was conducted by Ms. Nannapat, who was a Special Research Student at Akita University.
Nannapat Kummoo, Ladda Tangwattananukul, Mayuko Fukuyama (2025) Classification of granitic rocks using stained rock and μ-XRF analysis: Comparison with lithogeochemical data. Bulletin of Earth Sciences of Thailand, 17, 12-25.
https://ph01.tci-thaijo.org/index.php/bestjournal/article/view/260729
A paper on the formation of Li-pegmatite has been published.
In southern Thailand, a large lithium (Li) pegmatite deposit has been discovered. In this paper, we conclude that the formation of these granites and Li-pegmatites in the region is linked to orogenic events and plate subduction during the Late Triassic, Late Cretaceous, and Paleocene. The Li-pegmatites originated from highly fractionated tourmaline granite magma during the Late Cretaceous. This study was conducted as part of Dolnapha Phrairoj’s master’s research.
Dolnapha Phrairoj, Mayuko Fukuyama, Ladda Tangwattananukul (2025) Geochemical and geochronological Constraints on the Petrogenesis and Tectonic Evolution of Li‐Pegmatites and Granites in Phang Nga and Phuket, Southern Thailand. Resource Geology, 76, e70024. (20 pages)
DOI: https://doi.org/10.1111/rge.70024
A paper on the formation of poikilitic hornblende pyroxenite has been published.
Wakazono, A., Fukuyama, M., Itano, K., Harigane, Y., Tamura, A., Morishita, T. (2025) Poikilitic hornblende pyroxenite in the southern end of the Abukuma Mountains, Northeast Japan, as result of adakitic magmatism. Frontiers in Geochemistry, 3, 1697337.
https://doi: 10.3389/fgeoc.2025.1697337
Akita University Graduate Student Research Exchange Presentation 2025
On October 28, 2025, Alejo san, Matba san, and Suzuki san presented their research at the Akita University Graduate School Student Research Exchange Presentation 2025.
A paper published on the metal fertility of magma revealed by zircon chemistry
Kennethjer Alejo & Mayuko Fukuyama (2025) Geochemical and geochronological insights into the metal fertility of magmas associated with the Kennon Cu–Au porphyry deposit of Black Mountain in the Baguio Mineral District, North Luzon, Philippines. Lithos, 516-517, 108243.
https://doi.org/10.1016/j.lithos.2025.108243
Fieldwork in Mongolia
I had a fieldwork in vast and incredible landscapes in Mongolia from July to August. It is my first visit to Mongolia. Truly enjoyable. I would like to thank my Mongolian colleagues, their families, and their friends for their warm hospitality and support.
Visit to GFZ Potsdam and Participation in Goldschmidt 2025
After visiting the SIMS lab at GFZ (German Research Centre for Geosciences) in Potsdam, I attended the Goldschmidt 2025 Conference in Prague from July 6 to 11. The whole experience made me extremely happy.
A paper published on the U-Pb dating of garnet from the gold deposit
Mokane, L., Agangi, A., Takahashi, R., Betsi, T. B., Phili, K., Nopeia, M., Kelepile, T., Fukuyama, M., Bagai, Z., Manalo, P. (2025) Geochemistry and U-Pb geochronology of garnet from the Somerset and Arab gold deposits, Vumba Greenstone Belt, northeastern Botswana: implications for the timing of gold mineralization, Resource Geology, 75, e70012. https://doi.org/10.1111/rge.70012
A paper published on the formation of the rodingites collected by the Oman drilling project
Alireza Eslami, Benjamin Malvoisin, Mayuko Fukuyama, Marguerite Godard, Yuji Ichiyama, László Előd Aradi, Katsuyoshi Michibayashi, Zaicong Wang, Ming Li, Alessandro Cavallo, The Oman Drilling Project Science Team. (2025) Xonotlite and pectolite in rodingites from the Samail ophiolite: Markers of reducing conditions and element transfer during peridotite-gabbro interaction. Lithos, 512-513, 108160. https://doi.org/10.1016/j.lithos.2025.108160
JpGU2025 and visit to NIES
I had a talk about the magnetite U-Pb dating at the JpGU2025 in Chiba, Japan in May. I also visited to the National Institute of Environmental Studies (NIES) in Tsukuba, Japan.
