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本文对四川攀枝花—西昌（即攀西裂谷）地区各个不同时期、不同产状、不同岩类中的斜长石、碱性长石进行了X射线研究,配合单矿物化学分析、电子探针成分分析,结合红外光谱、光学测定,精确地计算了42个斜长石,60个碱性长石的晶胞参数,求出其四个四面体的Al含量,确定长石的成分和结构态。为探索攀西地区岩浆活动演化规律,研究攀西裂谷形成、发展及其消亡历史提供了客观依据。
In this paper, X-ray studies on plagioclase and alkaline feldspar in Panzhihua-Xichang (ie Panxi Rift) in different periods, different occurrences and different rock types have been carried out. Combined with single mineral chemical analysis, electron probe Composition analysis, combined with infrared spectroscopy, optical determination, accurate calculation of the cell parameters of 42 plagioclase, 60 alkaline feldspar, calculated the tetrahedron Al content, determine the composition and structure of feldspar state . It provides an objective basis for exploring the evolution of magmatic activity in Panxi area and studying the formation, development and disappearance history of the Panxi rift.