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- TANAKA Takahiro
- Department of Mathematics, Physics and Earth Science, Faculty of Science and Engineering, Ehime University
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- MINAKAWA Tetsuo
- Department of Mathematics, Physics and Earth Science, Faculty of Science and Engineering, Ehime University
書誌事項
- タイトル別名
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- Bi-bearing and REE-free zalesiite from the Fuka mine, Okayama Prefecture, Japan
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抄録
Zálesíite is found to exist as hexagonal prismatic crystals (length: up to 1 mm; width: 10 μm) and fibrous aggregates in the alteration zone in crystalline limestone near gehlenite-spurrite skarns at the Fuka mine, Okayama Prefecture, Japan. The mineral is pale green to emerald green in color with a silky to vitreous luster. Andradite, aragonite, bornite, cahnite, chalcocite, chalcopyrite, conichalcite, johnbaumite, and an unidentified Ca-Cu arsenate mineral coexist in the abovementioned limestone. From SEM-EDS analysis, the empirical formula of zálesíite is found to be (Ca0.74Bi0.26)Σ1.00(Cu5.80Ca0.18Ni0.01Zn0.01)Σ6.00[(As2.86Si0.12P0.02)Σ3.00(O11.14OH0.86)Σ12.00](OH)6·3H2O on the basis of the following calculation: 10 (M1 + M2 + X) + 6 (OH) + 3 (H2O). Zálesíite collected from the Fuka mine contains Bi and is free of REE. The unit cell parameters of the zálesíite crystals are a = 13.656(9), c = 5.850(4) Å, V = 945(1) Å3, and Z = 2. It is inferred that zálesíite is formed by the reaction between crystalline limestone, cahnite, johnbaumite, Cu sulfide, and a Bi-rich hydrothermal solution.
収録刊行物
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- Journal of Mineralogical and Petrological Sciences
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Journal of Mineralogical and Petrological Sciences 104 (3), 164-167, 2009
一般社団法人 日本鉱物科学会
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詳細情報 詳細情報について
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- CRID
- 1390282681523245056
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- NII論文ID
- 10024980640
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- NII書誌ID
- AA11460926
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- ISSN
- 13493825
- 13456296
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- 本文言語コード
- en
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- データソース種別
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- JaLC
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- 抄録ライセンスフラグ
- 使用不可