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与地幔转变带性质有关的地幔矿物学和化学已作过大量的讨论了.地幔矿物相变的详尽资料对搞清地幔的矿物组成和化学成分是必不可少的。在这篇文章中,首先,我们回顾一下最近地幔矿物高压相变关系的实验结果,然后用近来测定的地幔主要矿物相转变的热化学资料估价实验确定的相图,最后,用经过热化学数据校正过的相图确定地幔的矿物和化学条件。在Mg_2SiO_4-Fe_2SiO_4系列中,橄榄石(α)-变
Mantle mineralogy and chemistry related to the properties of mantle transition zones have been extensively discussed. Detailed information on mantle mineral phase transitions is essential for understanding the mineral composition and chemical composition of the mantle. In this article, we first review the experimental results of the recent high-pressure phase transitions in the mantle minerals and then use the recently determined thermochemical data of the major mineral-facies conversions in the mantle to evaluate experimentally determined phase diagrams. Finally, The corrected phase diagram determines the mineral and chemical conditions of the mantle. In Mg_2SiO_4-Fe_2SiO_4 series, olivine (α) -variation