翡翠成因与人工合成的研究

缅甸翡翠主要产出于富含钠长石和 Na质闪石的蓝闪片岩相中 ,形成于相对低温高压的多期区域变质作用。缅甸翡翠的人工高温高压合成在充分研究了其地质产出、成因及显微结构特征的基础上 ,模拟翡翠自然生成的组分环境及温压条件 ,合成了人工翡翠。对人工合成翡翠的实验条件、晶化情况、显微结构以及合成过程中温度压力对结晶的影响等作了阐释。并就目前合成翡翠未能达到宝石级的原因提出了作者的观点 ,在硬玉晶体生成后 ,应模仿翡翠后期动力变质作用 ,对硬玉晶体进行机械处理 ,以求完全模拟翡翠地质形成条件而合成出优质翡翠的观点

RESEARCH OF THE OCCURRENCE AND SYNTHESIS OF BURMA JADEITE

The Burma Jadeite occurs mainly in close association with Albite and with some Na riched amphibole such as Crossite,Winchite and Tarmite in the Glaucophane schist facies.It is formed by several periods of regional metamorphism with relative low temperature~high pressure. Based on investigations of its characters of geological occurrence,forming and micro-texture,it is synthesized by imitating component environment and temperature~pressure condition of natural Burma jadeite. It is studied of the experiment condition,crystallization,micro texture and the relation between the condition of temprerature pressure and crystallization druingits synthesis. Since the synthetic jadeite is failing to compare the real jadeite from nature,it is pointed out that it should be handled mechanically for imitating the later period of metamorphism of natrue jadeite after its crystal formed ,so that the very good jadeite could be made by imitating natural conditions completely.