[R1-05] Nno-inclusion in blue sapphire from Diego, Madagascar | 2023 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

2023 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Sep 14 - Sep 16, 2023大阪公立大学　杉本キャンパス　全学共通教育棟

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2023 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)

Sep 14 - Sep 16, 2023大阪公立大学　杉本キャンパス　全学共通教育棟

[R1-05]Nno-inclusion in blue sapphire from Diego, Madagascar

*Akira MIYAKE¹, Seika oto¹, Yohei Igami¹, Jun Uzuhashi², Tadakatsu Ohkubo², Hiroshi Kitawaki³, Kentaro Emori³(1. Kyoto Univ., 2. NIMS, 3. CGL)

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Keywords:

corundum,srilankite,transmission electron microscope,3D atomprobe

Nano-inclusions in Be-containing natural blue sapphires (corundum) from Diego, Madagascar were observed and analysed by transmission electron microscope (TEM) and 3D atomprobe (3DAP). TEM results show that Nano-inclusion has 20-40 nm length and 5-10 nm width, and the nano-inclusion is identified by srilankite, one kind of polymorphs of TiO₂. TEM and 3DAP results show the inclusion consists of Ti, Nb, Ta, Fe, Sn and Be component is found in the boundary between inclusion and matrix phase, corundum.

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