钙稀土氟碳酸盐矿物中体衍交生结构的电子显微镜研究  

Study of Transmission Electron Microscopy of the Syntactic Intergrowth Structure in the Calcium Rare Earth Fluorocarbonate Minerals

作　　者：吴秀玲[1] 孟大维[1] 杨光明[1] 潘兆橹[1] 李斗星[1] 戴吉岩[1] 胡魁毅 

机构地区：[1]中国地质大学测试中心,中国科学院金属研究所固体原子像开放研究实验室

出　　处：《中国稀土学报》1996年第2期170-174,共5页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金;中国地质大学科研基金

摘　　要：用高分辨电子显微术研究了四川西昌地区钙稀土氟碳酸盐矿物中的体衍生复合多晶体超微结构特征，直观地揭示了该类矿物非均匀结构的复杂性。研究表明，该矿物晶体是由钙稀土氟碳酸盐矿物系列中不同组分的氟碳铈矿（Ｂ）与直氟碳钙铈矿（Ｓ）结构单元层沿ｃ轴方向无序堆垛而成。本文还讨论了体衍生多晶体结构中的堆垛层错等晶体缺陷现象。The microstructural characteristics of the syntactic polycrystal in the calcium rare earth fluorocarbonate minerals from southwest China have been studied by means of high resolution electron microscopy (HREM). The complication of the syntactic polycrystal of such minerals have been revealed by HREM. The results show that the crystal structure of such minerals are formed by disorder stacking along the c axis of the unit layer of bastnaesite(B) and synchisite(S) in the calcium rare earth fluorocarbonate minerals. The stacking fault and other crystal defects in the syntactic polycrystal have been discussed.

关 键 词：钙稀土矿物 体衍交生 电子显微镜 碳酸盐矿物 

分 类 号：P578.6[天文地球—矿物学]