The system diopside-acmite-nepheline at low oxygen fugacity

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

doi:10.2465/ganko.87.123

The system diopside-acmite-nepheline at low oxygen fugacity

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

Material Science of Solar Planets

Research output: Contribution to journal › Article › peer-review

Abstract

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

Original language	English
Pages (from-to)	123-126
Number of pages	4
Journal	Journal of Mineralogy, Petrology and Economic Geology
Volume	87
Issue number	4
DOIs	https://doi.org/10.2465/ganko.87.123
Publication status	Published - 1992

All Science Journal Classification (ASJC) codes

Environmental Science(all)
Earth and Planetary Sciences(all)

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title = "The system diopside-acmite-nepheline at low oxygen fugacity",

abstract = "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",

author = "K. Onuma and S. Ikeda and E. Ohtani and T. Kato",

year = "1992",

doi = "10.2465/ganko.87.123",

language = "English",

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pages = "123--126",

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T1 - The system diopside-acmite-nepheline at low oxygen fugacity

AU - Onuma, K.

AU - Ikeda, S.

AU - Ohtani, E.

AU - Kato, T.

PY - 1992

Y1 - 1992

N2 - 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

AB - 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

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The system diopside-acmite-nepheline at low oxygen fugacity

Abstract

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