Origin and cosmochemical implications of rubinite (Ca3Ti3+2Si3O12), a new CAI mineral from the Allende CV chondrite / 炭素質コンドライトの難揮発性包有物から発見された新鉱物ルービナイトの起源と宇宙化学的意義
- Resource Type
- Journal Article
- Authors
- Jun Muto; Takashi Yoshizaki; Tomoki Nakamura; 中村 智樹; 吉崎 昂; 武藤 潤
- Source
- Abstracts of Annual Meeting of the Geochemical Society of Japan. 2018, :187
- Subject
- CAIs
chondrites
early solar system
refractory inclusions
solar nebula
コンドライト
初期太陽系
鉱物
難揮発性包有物
- Language
- Japanese
New minerals from chondritic refractory inclusions potentially record a specific history of the earliest stage of the solar system evolution. Rubinite (Ca3Ti3+2Si3O12) is a new garnet mineral identified in refractory inclusions from CV carbonaceous chondrites. Petrology and mineral chemistry of rubinite from the Allende CV chondrite suggest formation from a partial melt of a pre-existing nebula condensate under highly reduced conditions near the proto-Sun. Since mineralogical and petrological variations observed in Allende rubinite might reflect physicochemical conditions of both nebular and asteroidal processes, further investigation of the mineral will provide us new insights into the early solar system processes.