四川软玉（透闪石玉）猫眼的矿物学研究

采用电子探针(EPMA)、X射线粉晶衍射(XRD)、Raman光谱、扫描电镜(SEM)和偏光显微镜等方法对四川软玉(透闪石玉)猫眼进行了研究。结果表明，四川软玉猫眼主要由微晶一隐晶质透闪石矿物集合体组成；透闪石主要呈近于平行定向排列的显微纤维状，显微纤维变晶结构是软玉猫眼的主要结构，具有此结构的软玉能表现出良好的猫眼效应；透闪石纤维较粗、相互聚集形成束状或捆状结构时，猫眼的眼线比较分散，猫眼效应较差；透闪石纤维局部相互穿插绞合是软玉猫眼表现出高韧性和较强抗断裂性能的主要因素。

Mineralogy of nephrite (tremolite) cat's eye from Sichuan Province

Electronic microprobe analysis (EMPA), X-ray diffraction (XRD), Raman spectrum, scan electronic microscope (SEM) and polarized optical microscope were used to study nephrite cat's eyes from Sichuan Province,Southwest China . The results indicate that the nephrite cat's eye mainly consists of aggregates of microcrystalline-cryptocrystalline tremolites. Fiber-shaped tremolites are parallel to each other in a certain direction. Fibroblastic texture is dominant, with which the nephrite can show good cat's eye effect, while tremolites with relatively thick fibers or bunchy and bundle fibers do not show satisfactory cat's eye effect. Fiber-shaped tremolites gear with each other tightly, which seems to be the major reason why the nephrite cat's eye displays high tenacity and break-resistant capability.