摘要
Orthoclase is a kind of heterogeneous crystal in structure, which is constituted of domains with triclinic symmetry in the forms of submicroscopic twins or sub-X-ray twins. Although the average structure of orthodase given by X-my diffraction possesses C2/m symmetry, the true symmetry of domain itself is. Orthoclase is a metastable phase between sanidine and microcline, considering the ordering sequence of Al in the tetrahedral sites.
基金
Project supported by the National Natural Science Foundation of China and the Laboratory of Solid State Microstructures of Nanjing University
