詳細

• 発行日: 2010 年 受付日: 2009/03/18 J-STAGE公開日: 2010/07/01 受理日: 2009/12/11 早期公開日: 2010/04/30 改訂日: -

メタデータをダウンロード RIS形式

(EndNote、Reference Manager、ProCite、RefWorksとの互換性あり)

BIB TEX形式

(BibDesk、LaTeXとの互換性あり)

テキスト メタデータのダウンロード方法

抄録

  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.

引用文献 (24)

関連文献 (0)

図 (0)

電子付録 (0)

成果一覧 ()

被引用文献 (0)

© 2010 日本鉱物科学会