紫色翡翠的高温高压合成与表征

Properties and Characterization of Synthetic Jadeite Doped MnO

摘要: 以硅酸铝、硅酸钠为原料并加入少量一氧化锰作为致色剂制备出玻璃料，利用高温高压法确定了紫色硬玉质翡翠的最佳合成条件，并通过XRD、FTRS和SEM等方法对样品进行表征。实验结果表明：5.0 GPa、1450℃条件下合成样品的主要成分为NaAlSi₂O₆，样品呈现紫色，分子结构为硅氧四面体结构，具有柱状纤维编织形貌。我们的研究对于揭示天然翡翠的形成机制提供有力的参考。

Abstract: With Al₂(SiO₃)₃ and Na₂SiO₃•9H₂O as raw materials and adding a small amount of manganese oxide as reagent, the NaAlSi₂O₆ jadeite was synthesized by the method of high-pressure and high-temperature (HPHT). Amorphous glass materials are entirely converted to crystalline NaAlSi₂O₆ jadeite at 5.0 GPa and 1450˚C. All the experimental results reveal that the main components of the purple samples synthesized were NaAlSi₂O₆ and molecular structure was silicon oxygen tetrahedron structure, with columnar fiber woven morphology by XRD, FTRS and SEM. The research indicates that it will be help for deep understanding on the origin of natural jadeite.