Presentation Information
[R5P-01]Thermal and shock history of diogenites on the basis of the occurrence of silica minerals[Presentation award entry]
*Rei Kanemaru1, Akira Yamaguchi1,2, Naoya Imae1,2, Atsushi Takenouchi3 (1. SOKENDAI, 2. NIPR, 3. Kyoto univ.)
Keywords:
Diogenite,Silica minerals
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We investigated silica minerals in diogenite meteorites, which are considered to be derived from the crustal material of differentiated asteroids (probably Vesta). We identified quartz, (PO-, MC-) tridymite, and cristobalite in diogenite using cathodoluminescence imaging methods and micro-Raman spectroscopy. The occurrence of these silica minerals is closely related to the petrological features of the diogenite. In this presentation, I will explain the metamorphic history of the diogenite suggested by the occurrence of silica minerals.
We investigated silica minerals in diogenite meteorites, which are considered to be derived from the crustal material of differentiated asteroids (probably Vesta). We identified quartz, (PO-, MC-) tridymite, and cristobalite in diogenite using cathodoluminescence imaging methods and micro-Raman spectroscopy. The occurrence of these silica minerals is closely related to the petrological features of the diogenite. In this presentation, I will explain the metamorphic history of the diogenite suggested by the occurrence of silica minerals.