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对所收集的４７个碱性闪石结构数据计算出理论Ｘ射线粉末图，同时实测出５个碱 性闪石样品的粉末图及其晶体化学占位，从这５２个样品的Ｘ射线衍射圈中选出１８条特征衍射 强度，将强度比值与各晶位各阳离子占位用多元统计分析统计出经验公式，以之作为估算未知 样品各阳离子占位的线性模型。回代实践表明，本线性模型具有较钙质闪石更高的可靠性与精 确度。预测５个实测样品的晶体化学类型与原定名对比完全符合，准确度达１００％。按国际分 类表纠正个别样品原定名的错误。在１２种阳离子占位中，估算的准确度有８种大于９０％，３种 近于９０％！唯有Ｔ位Ｓｉ的准确度仅６６％，这可能是因为所选样品中Ｔ位基本上为Ｓｉ占位，其 占位数均超过 ７．５，占位度均大于 ０.９，总变化幅度小从而降低其相关性。因 ５２个样品中，也包 含钠钙闪石亚族，故对整个闪石族用Ｘ射线衍射估算阳离子占位的问题已基本解决。
The theoretical X-ray powder images of the 47 alkaline amphibole structures collected were calculated. At the same time, the powder images of 5 alkaline amphibole samples and their crystal chemical occupancy were measured. From these 52 samples, the X-ray diffraction Eighteen characteristic diffraction intensities were selected, and the empirical formula was obtained by multivariate statistical analysis of the intensity ratio and the cation occupancy of each crystal lattice, which was used as a linear model for estimating the cation occupancy of unknown samples. Back to the practice shows that the linear model has higher reliability and accuracy than calcium amphiboles. It is predicted that the crystal chemical types of the five measured samples will be completely consistent with the original one, with an accuracy of 100%. According to the international classification of individual samples to correct the original name of the error. Among the 12 cationic sites, the accuracy of the estimates is greater than 90% for eight species and nearly 90% for three species! Only the accuracy of T-site Si was only 66%, probably because the T-site in the selected sample was essentially Si-place, accounting for more than 7.5 and accounting for more than 0.9, respectively. The total change The small magnitude reduces their relevance. Since 52 samples also contain sodalite subfamilies, the problem of estimating the occupancy of the cation by X-ray diffraction of the entire amphiprion has been basically solved.