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Updated: Jul 12, 2026

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Synthesis and Microdiffraction at Extreme Pressures and Temperatures
Published on: October 7, 2013
パイロックスフェロイト:合成Ca0.15Fe0.85SiO3パイロキセノイドの安定性とX線結晶学
まとめ
合成ピロキセノイド (Ca 0.15 Fe 0.85 SiO 3) は,月のピロキシフェロイトを模倣しています. この合成材料は10キロバー以下では不安定で,月面のピロックスフェロイトは数十億年にわたってメタスタブルのままであることを示唆しています.
科学分野:
- ミネラロジーは,鉱物学です.
- 地質化学 地質化学
- 惑星科学は惑星科学である.
背景:
- ピロックスフェロイトは,アポロ11号の月面サンプルで発見された新発見の鉱物です.
- 合成のCa ((0.15) Fe ((0.85) SiO ((3)) ピロキセノイドは,構造と組成がピロックスフェロイトと類似している.
研究 の 目的:
- 合成パイロキセノイドのCa{0.15) Fe{0.85) SiO{3) の安定性条件を調査する.
- アポロ11号のサンプルの月のピロックスフェロイトの持続性を理解するために.
主な方法:
- 高圧合成により,Ca ((0.15) Fe ((0.85) SiO ((3)) パイロキセノイド.
- 合成および自然サンプルの構造および組成分析.
主要な成果:
- 合成のCa ((0.15) Fe ((0.85) SiO ((3)) ピロキセノイドは,ピロキシマンギット構造を示しています.
- この合成材料は,約10キロバー以下という圧力では不安定です.
- 月面のピロックスフェロイトは,おそらくメタステーブルな状態にある.
結論:
- 月面条件下でのピロックスフェロイトの安定性は疑わしい.
- 月面のピロックスフェロイトは,おそらく数十億年もの間,メタステーブルな状態で存在しています.
- この発見は,月面における長期の地質学的過程についての洞察を提供します.
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