H5コンドライトの液体インクルージョンを含むハライト内の小惑星水,モナハンズ (1998)
M E Zolensky1, R J Bodnar, E K Gibson
1Mail Code SN2, NASA Johnson Space Center, Houston, TX 77058, USA.
Science (New York, N.Y.)
|August 28, 1999
まとめ
モナハンのコンドライト・ハライトとシルビット結晶の水性液体の含有物は,塩化ナトリウム・塩化カリウム塩化塩素を明らかにしている. これらの塩水には二価イオンが含まれており,小惑星の内部流体または外部の氷体から起源が示唆されています.
科学分野:
- *宇宙化学と惑星科学で,隕石と小惑星の組成に焦点を当てています.
- * 地球外物質と流体進化の地球化学.
背景:
- *隕石,特にコンドライトは,初期の太陽系プロセスについての洞察を提供します.
- *ハライトとシルビットは,過去の水性環境の証拠を保存できる塩鉱物です.
研究 の 目的:
- * モナハンス (1998) H5コンドライトからのハライトとシルビット内の水性流体インクルージョンの組成を分析する.
- * これらの塩水晶の中に閉じ込められた塩塩の起源と性質を決定する.
主な方法:
- * ハライトとシルビット結晶内の液体インクルージョンの分析.
- * 大塩酸と二価イオンを含む塩水組成の化学的特徴.
主要な成果:
- * 液体インクルージョンは主に塩塩酸ナトリウム塩化物-塩酸カリウム塩化物の塩塩分を含んでいます.
- * 塩漬けには,鉄,マグネシウム,カルシウムなどの二重カチオンが検出されました.
- *これらの塩塩の存在は,母体内の過去の水性活動を示しています.
結論:
- *分析された塩塩は,小惑星内の原生液体から,または塩分豊富な氷の物体から外来発送された可能性が高い.
- *これらの発見は,小惑星の水と揮発性元素の歴史を理解するのに役立ちます.
キーワード:
非プログラム的なものです.
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