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 |
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Pages (from-to) | 123-126 |
Number of pages | 4 |
Journal | Journal of Mineralogy, Petrology and Economic Geology |
Volume | 87 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1992 |
All Science Journal Classification (ASJC) codes
- Environmental Science(all)
- Earth and Planetary Sciences(all)