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Uranocircite from Ogitsubo, Iida City, Nagano Prefecture
http://hdl.handle.net/10091/10443
http://hdl.handle.net/10091/10443cf611182-f8cc-444d-8e25-381a3de0c7c7
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2010-10-06 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Uranocircite from Ogitsubo, Iida City, Nagano Prefecture | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
著者 |
WATANABE, KOJI
× WATANABE, KOJI |
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出版者 | ||||||
出版者 | 信州大学理学部 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 信州大学理学部紀要 5(1): 65-78(1970) | |||||
書誌情報 |
信州大学理学部紀要 巻 5, 号 1, p. 65-78, 発行日 1970-10-05 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Uranocircite, a hydrated phase of barium and hexavalent uranium, Ba(UO₂)₂・(PO⁴)₂・8H₂O, was identified in the oxidation zone of Ogitsubo in the "Iida radioactiveanomlous area" in 1968. This yellow green mineral occurred in fine arkosic silt and white fissure clay (montmorillonite) which were deposited in the basal part of Miocene sediments just above the unconformity. Uranocircite, a sort of uranium mica minerals, is rarely found in ordinary uranium deposits, because barium in the mineral is easily replaced by such an element as calcium. Basement granite of this area contains abnormally rich thorium, while a relatively large amount of monazite, (La, Ce, Th, Y)・PO₄, is found in several localities of this district. Around the crystals of monazite included in biotite intense pleochroic haloes are observed under the microscope. Perhaps these environmental conditions led the generation of the barium-bearing uranophosphate mineral as secondary ore. | |||||
資源タイプ(コンテンツの種類) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Article | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 0583-063X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00697923 | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |