著者

長谷中 利昭 李 文遠 藤巻 宏和 北風 嵐 宮本 毅 谷口 宏充 Toshiaki HASENAKA Moon-Won LEE Hirokazu FUJIMAKI Arashi KITAKAZE Tsuyoshi MIYAMOTO Hiromitsu TANIGUCHI 東北大学 東北アジア研究センター 江原大學校 師範大學 科学教育科 東北大学大学院 理学研究科 地学専攻 東北大学 東北アジア研究センター 東北大学 東北アジア研究センター 東北大学 東北アジア研究センター Center for Northeast Asian Studies Tohoku University Department of Science Education Collegge of Education Kangwon National University Graduate School of Science Tohoku University Center for Northeast Asian Studies Tohoku University Center for Northeast Asian Studies Tohoku University Center for Northeast Asian Studies Tohoku University

雑誌

東北アジア研究 = Northeast Asian studies (ISSN:13439332)

巻号頁・発行日

vol.2, pp.21-40, 1998-03-31

著者

北風 嵐

出版者

日本鉱物科学会

雑誌

岩石鉱物科学 (ISSN:1345630X)

巻号頁・発行日

vol.39, no.3, pp.104-109, 2010-05-30

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Sulfide blebs composing of bornite solid-solution, mooihoekite, isocubanite and pyrrhotite occur in andesite from the lava dome, Tarumai volcano, Hokkaido, Japan. The lava dome consists of two-pyroxene andesite. Some bornite solid-solutions are found as exsolution lamellae in mooihoekite which is originally crystallized as intermediate solid-solution (iss) in the Cu-Fe-S system at high-temperature, included in magnetite phenocrysts of the andesite. Isocubanite occurs closely associating with pyrrhotite included in orthopyroxene phenocrysts of the andesite, and is exsolved from the Cu-bearing pyrrhotite. Some bornite solid-solutions and mooihoekite are found in a ground mass as micro-crystals. The magnetite including mooihoekite and bornite solid-solution, and the orthopyroxene including pyrrhotite and isocubanite may be crystallized at different conditions. The crystallization temperatures are about 950 °C for the silicate melt including magnetite phenocrysts, and about 1150 °C for the orthopyroxene bearing silicate melt. Therefore, this andesite magma is thought to be formed by the magma mixing.<br>

著者

長谷中 利昭 李 文遠 藤巻 宏和 北風 嵐 宮本 毅 谷口 宏充 Toshiaki HASENAKA Moon-Won LEE Hirokazu FUJIMAKI Arashi KITAKAZE Tsuyoshi MIYAMOTO Hiromitsu TANIGUCHI 東北大学 東北アジア研究センター 江原大學校 師範大學 科学教育科 東北大学大学院 理学研究科 地学専攻 東北大学 東北アジア研究センター 東北大学 東北アジア研究センター 東北大学 東北アジア研究センター Center for Northeast Asian Studies Tohoku University Department of Science Education Collegge of Education Kangwon National University Graduate School of Science Tohoku University Center for Northeast Asian Studies Tohoku University Center for Northeast Asian Studies Tohoku University Center for Northeast Asian Studies Tohoku University

雑誌

東北アジア研究 = Northeast Asian studies (ISSN:13439332)

巻号頁・発行日

vol.2, pp.21-40, 1998-03-31

著者

長谷中 利昭 李 文遠 谷口 宏充 北風 嵐 宮本 毅 藤巻 宏和 Toshiaki HASENAKA Moon-Won LEE Hiromitsu TANIGUCHI Arashi KITAKAZE Tsuyoshi MIYAMOTO Hirokazu FUJIMAKI 東北大学 東北アジア研究センター 江原大學校 師範大學科學教育科 東北大学 東北アジア研究センター 東北大学 東北アジア研究センター 東北大学 東北アジア研究センター 東北大学大学院 理学研究科 地学専攻 Center for Northeast Asian Studies Tohoku University Department of Science Education Collegge of Education Kangwon National University Center for Northeast Asian Studies Tohoku University Center for Northeast Asian Studies Tohoku University Center for Northeast Asian Studies Tohoku University Graduate School of Science Tohoku University

雑誌

東北アジア研究 = Northeast Asian studies (ISSN:13439332)

巻号頁・発行日

vol.2, pp.41-74, 1998-03-31

被引用文献数

1

著者

北風 嵐

出版者

一般社団法人 日本鉱物科学会

雑誌

岩石鉱物科学 (ISSN:1345630X)

巻号頁・発行日

vol.39, no.1, pp.32-33, 2010 (Released:2010-03-27)

参考文献数

10

著者

北風 嵐 小松 隆一

出版者

一般社団法人 日本鉱物科学会

雑誌

岩石鉱物科学 (ISSN:1345630X)

巻号頁・発行日

vol.45, no.5, pp.133-137, 2016 (Released:2016-11-02)

参考文献数

14

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Ni-rich horomanite is found from the chalcopyrite-bearing (1.0-1.5 mode%) layer in the Kouyama gabbroic body, Hagi city, Yamaguchi Prefecture, western Japan and as second occurrence in the world.  It occurs as inclusions in chalcopyrite interspaced with silicate minerals, vanadium-bearing magnetite and ilmenite. It is often associated with siegenite and is secondarily replaced by violarite. Chalcopyrite associating with Ni-rich horomanite commonly shows the polysynthetic twin.  Analytical data for horomanite obtained by EPMA are Cu: 0.56-2.19, Fe: 23.01-25.32, Ni: 37.45-41.35, Co: 1.56-4.03 and S: 32.85-33.32 wt%. Their variations are small for inner grain or another grain. The atomic ratio of (Cu + Fe + Ni + Co): S correlates well with ideal formula of 9:8 for horomanite. In addition, Ni content in metal ratio for (Cu + Co): Fe: Ni (at%) ranges from 52 to 59 and is Ni-rich than that of original horomanite from the Horoman peridotite. Horomanite might be considered to be continuous solid solution ranging from 3.0 to 5.5 in terms of Ni(+Co) content. Therefore, general formula for horomanite is thought to be (Fe + Cu)6 − x(Ni + Co)3 + xS8(0 < x < 2.5).

著者

苣木 浅彦 島 敞史 北風 嵐

出版者

Japan Association of Mineralogical Sciences

雑誌

岩石鉱物鉱床学会誌 (ISSN:00214825)

巻号頁・発行日

vol.73, no.3, pp.63-77, 1978-03-05 (Released:2008-08-07)

参考文献数

40

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To reconfirm whether minerals of luzonite-famatinite series form complete solid solution between them as Springer (1969) reported or limited solid solution having immiscibility gap from approximately 10 to 40 mol% Cu3SbS4 as Skinner (1960) inferred. 16 samples of luzonite and famatinite from 7 mines in Japan, Formosa and Philippines were examined by electron probe microanalyser (EPMA). The quantitative analytical data by EPMA for the samples are given in Tables 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 and 13. The specimens from the Hokuetsu mine, Japan and the Mankayan mine, Philippines have most nearly stoichiometric composition of luzonite as from 0 to 3 mol% Cu3SbS4. They from the Lobo mine, Philippines and the Kinkaseki mine, Formosa have from 2 to 12 mol% Cu3SbS4, and from 2 to 7 or 36 to 41 mol% Cu3SbS4 in composition, respectively. Also luzonite-famatinite series minerals from the Teine, Kasuga and Akeshi mines, Japan have compositions of such wide range as from 19 to 71, 26 to 82 and 3 to 78 mol% Cu3SbS4, respectively. However, the composition corresponding to stoichiometric Cu3SbS4 of famatinite was not found during this study. Analytical data for 378 points in 16 specimens are summarized as shown in Fig. 5, and it is found that there is existance of minerals having continuous compositions between luzonite and famatinite except nearly famatinite end. Therefore it is concluded that the complete solid solution between them exists at low temperature as the result of Springer's examination.