[R7-06] Melt incusions containing platinum group minerals in Tahitian mantle xenolith | 2022 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

2022 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Sep 17 - Sep 19, 2022新潟大学五十嵐キャンパス

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2022 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Sep 17 - Sep 19, 2022新潟大学五十嵐キャンパス

[R7-06]Melt incusions containing platinum group minerals in Tahitian mantle xenolith[Presentation award entry]

*Itaru Mitsukawa¹, Tetsu Kogiso¹, Norikatsu Akizawa², Tomoki Taguchi³, Kentaro Uesugi⁴, Akihisa Takeuchi⁴, Masanori Yasutake⁴, Akira Tsuchiyama^5,6, Megumi Matsumoto⁷, Junya Matsuno⁶, Shota Okumura¹, Yohei Igami¹, Akira Miyake¹(1. Kyoto Univ., 2. Univ. of Tokyo, 3. Waseda Univ., 4. SPring-8/JASRI, 5. Guangzhou Inst. of Geochem., CAS, 6. Ritsumeikan Univ., 7. Tohoku Univ.)

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Keywords:

Platinum Group Minerals,Bitumen,Melt inclusions,Raman spectroscopy,Tahiti Island

Platinum Group Elements (PGE) are important geochemical tracers to constrain Earth's early history. Recently, melt inclusions containing much platinum group minerals are found in a Tahitian harzburgite xenolith. They coexist with Fe-Ni-Cu sulfides, silicate glass and "vapor-like phase". We applied Raman spectroscopy to "vapor-like phase" and obtained spectra resembling to bitumen. However, we couldn't obtain significant signal of carbon with STEM-EDS analysis and "vapor-like phase" should be analyzed more in detail.

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