Journal Pre-proof High-pressure and high-temperature phase relations in the systems KAlSiO4-MgAl2O4 and CaAl2O4-MgAl2O4: Stability fields of NAL phases Fumiya Kimura, Hiroshi Kojitani, Masaki Akaogi PII: S0031-9201(20)30392-7 DOI: https://doi.org/10.1016/j.pepi.2020.106632 Reference: PEPI 106632 To appear in: Physics of the Earth and Planetary Interiors Received date: 22 August 2020 Revised date: 17 November 2020 Accepted date: 7 December 2020 Please cite this article as: F. Kimura, H. Kojitani and M. Akaogi, High-pressure and high- temperature phase relations in the systems KAlSiO4-MgAl2O4 and CaAl2O4-MgAl2O4: Stability fields of NAL phases, Physics of the Earth and Planetary Interiors (2020), https://doi.org/10.1016/j.pepi.2020.106632 This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier.