Preliminary report on metamict cerianite from Nesoya, Lutzow-Holmbunkta, East Antarctica
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概要
- 論文の詳細を見る
Mineralogical studies of a blackish mineral with strong radioactivity from microcline pegmatites of Nesoya, Lutzow-Holmbukta, East Antarctica, were performed. This mineral has been completely or almost completely transformed into a metamict state. However, in a heat treatment (1000℃, 7 hours), the powder pattern is identical with cerianite, and the unit cell dimension calculated from the powder X-ray diffraction data is α_0=5.451A. According to the qualitative analysis by an electron probe X-ray microanalyzer, the mineral consists of lanthanoids and other elements, such as La, Ce, Pr, Nd, Sm, Eu, Gd, Th, Xe, Cs, Pb, Rh, etc. Both the X-ray diffraction data and chemical analysis identify this mineral as a metamict cerianite [Ce(Th)O_2].
- 国立極地研究所の論文
著者
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Matsumoto Yukio
Department Of Anesthesiology Fukushima Medical University School Of Medicine
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Sakamoto Arata
Department of Mineralogical Sciences and Geology, Faculty of Science, Yamaguchi University
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Sakamoto Arata
Department Of Mineralogical Sciences And Geology Faculty Of Science Yamaguchi University
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