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Winonaite
Winonaites are a group of primitive achondrite meteorites. Like all primitive achondrites, winonaites share similarities with chondrites and achondrites.〔(【引用サイトリンク】url=http://www.meteorite.fr/en/classification/PAC-group.htm )〕 They show signs of metamorphism, partial melting, brecciation and relic chondrules. Their chemical and mineralogical composition lies between H und E chondrites.〔 ==Naming and history== The winonaite group is named after the type specimen, the Winona meteorite. The name itself derived from Winona, Arizona where the type specimen was said to be found during an archaeological excavation of the Sinagua village Elden Pueblo in September 1928. The Sinagua lived in the village between 1150 to 1275. The meteorite was said to be retrieved from the cist of one of the rooms.〔(【引用サイトリンク】url=http://www.meteorites.com.au/favourite/september2003.html )〕〔M. M. Grady ''Catalogue of Meteorites'' (5th ed.) Cambridge UP, 2000, p. 528〕 However, a later study indicates the meteorite was found at another Sinagua site and not in Elden Pueblo.〔A. L. Christenson "J. W. Simmons' account of the discovery of the Winona meteorite."''Meteorite'' 10(3):14-16, 2004〕 Currently 25 meteorites are included in the winonaite group.〔(【引用サイトリンク】url=http://www.lpi.usra.edu/meteor/metbull.php )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Winonaite」の詳細全文を読む
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