The system diopside-acmite-nepheline at low oxygen fugacity

K. Onuma, S. Ikeda, E. Ohtani, T. Kato

研究成果: Contribution to journalArticle査読

抄録

Nepheline component (NaAlSiO4, 20 wt.%) was added to the join diopside(CaMgSi2O6)-acmite(NaFeSi2O6) and the phase relations were determined at 10-12 atm fO2 and 1050-1300°C. The liquidus lines for wustite and clinopyroxene cross each other at about 1160°C and the composition of Di24Ac56Ne20. The field of clinopyroxene + wustite + liquid extends from Di15Ac75Ne20 to Di40AC40Ne20 at 1050°C. In the Di-rich region the phase relations are complicated. Olivine appears as second phase, but disappears at lower temperatures (<1100°C). Melilite (<1200°C) and nepheline (<1150°C) are present at lower temperature region and coexist with olivine and/or clinopyroxene. -Authors

本文言語英語
ページ(範囲)123-126
ページ数4
ジャーナルJournal of Mineralogy, Petrology and Economic Geology
87
4
DOI
出版ステータス出版済み - 1992

All Science Journal Classification (ASJC) codes

  • 環境科学(全般)
  • 地球惑星科学(全般)

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