Ktenasite from the Hirao mine at Minoo, Osaka, Japan
スポンサーリンク
概要
- 論文の詳細を見る
Ktenasite was found as a vein forming mineral in the altered shale of Tamba zone of Jurassic age, at the Hirao mine, Minoo, Osaka, Japan. The mineral was also found in a marginal part of sphalerite in the host rock. This is the first occurrence of ktenasite in Japan. Ktenasite occurred as aggregates of flattened prismatic crystals up to 0.5 mm long and 0.1 mm wide, in association with minerals such as chalcopyrite, serpierite, smithsonite, hydrozincite, and limonite. An EPMA and CHNS/O analyzer gave the empirical formula (Cu3.446Zn1.451Co0.080Pb0.018Ni0.007)Σ5.002(SO4)2.003(OH)5.998·5.99H2O on the basis of O = 20. The unit cell parameters were a = 5.590(1), b = 6.161(1), c = 23.741(3) Å, and β = 95.628(3)°. The Vickers microhardness was 113 kg/mm2 and Mohs hardness was 2.5. The density was 2.93 g/cm3. It is likely that ktenasite at Minoo was formed by a reaction of the Cu-bearing fluids with sphalerite.
- 2002-08-01
著者
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KUSACHI Isao
Department of Earth Sciences, Faculty of Education, Okayama University
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OHNISHI Masayuki
Masutomi Geology Museum
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OHNISHI Masayuki
Department of Chemistry and Bioscience, College of Science and Industrial Technology, Kurashiki Univ
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KOBAYASHI Shoichi
Division of Earth Sciences, Kurashiki University of Science and the Arts
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Kusachi I
Okayama Univ. Okayama Jpn
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Kusachi Isao
Dep. Of Earth Sciences Fac. Of Education Okayama Univ.
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Kusachi Isao
Department Of Earth Sciences Okayama University
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Kusachi Isao
Department Of Earth Science Faculty Of Education Okayama University
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Kobayashi S
Dep. Of Applied Sci. Fac. Of Sci. Okayama Univ. Of Sci.
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Kobayashi S
Division Of Earth Sciences Kurashiki University Of Science And The Arts
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Kusachi Isao
Department Of Earth Sciences Faculty Of Education Okayama Univresity
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Kobayashi Shoichi
Division Of Clinical Laboratory Kanagawa Cancer Center
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Kobayashi Shoichi
Department Of Earth Sciences Faculty Of Science Okayama University Of Science
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Kishi Shigetomo
Department Of Earth Sciences Faculty Of Science Okayama University Of Science
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OHNISHI Masayuki
Department of Chemistry and Bioscience, College of Science and Industrial Technology
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