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本文对我国西北地区几个超基性岩、基性岩、火山岩和变质岩中的17个辉石进行了X衍射、穆氏谱、电子顺磁共振及激光拉曼光谱等矿物物理研究,获得了下列结论。 1.建立了Ca-Mg-Fe系列四种辉石相(C_(2/c)、P2_(1/c)、Pbcn、Pbca)X衍射物相定量解析法。 2.不同岩体的辉石具有不同的物相组成、不同的阳离子分布规律和不同的Si-O链分子结构。 3.辉石之矿物标型特征与地质体的生成温度、压力呈相关性。
In this paper, 17 pyroxenes in several ultrabasic rocks, basic rocks, volcanic rocks and metamorphic rocks in northwestern China were studied by means of X-ray diffraction, Mush spectrum, electron paramagnetic resonance and laser Raman spectroscopy. The following conclusion. 1. Quantitative analytical method for four phases of pyroxene (C_ (2 / c), P2_ (1 / c), Pbcn, Pbca) The pyroxenes of different rock masses have different phase composition, different cation distribution rules and different Si-O chain molecular structures. 3. The mineralogical characteristics of pyroxene are correlated with the temperature and pressure of geologic body.