论文部分内容阅读
利用高分辨电子显微技术（ＨＲＥＭ）研究了钙稀土氟碳酸盐矿物晶体结构中的混层现象。在Ｂ＿ｍＳ＿ｎ型规则混层矿物中发现了Ｂ＿５Ｓ＿４－３Ｒ和６Ｒ两种新多型，确定了它们的晶体结构类型、晶胞多数等，揭示出Ｂ＿５Ｓ＿４规则混层矿物不同多型体的超微结构特征，讨论了Ｂ＿５Ｓ＿４－６Ｒ多型晶体结构沿Ｃ方向的无序夹层和堆垛层错等晶体缺陷现象。
High-resolution electron microscopy (HREM) was used to investigate the mixed layer in the crystal structure of calcium-rich fluorocarbon minerals. Two new polymorphisms of B_5S_4-3R and 6R were found in the B_mS_n-type mixed bedded minerals, and their crystal structure types and unit cell numbers were determined. The ultrastructural features of different polytypes of B_5S_4 The phenomenon of crystal defects such as disordered interlayer and stacking faults along the C direction of B_5S_4-6R polycrystalline structure was discussed.