The fluid inclusions in jadeitite from Pharkant area, Myanmar

A lot of liquid-gas and liquid-gas-solid inclusions were found in Pharkant jadeitites, northwestern Myanmar and their characteristics, geological setting and porphyroclastic jadeites with inclusions in them were described in detail. The results analyzed by Raman spectrometer showed that the component of liquid-gas phase and solid phase (daughter minerals) in fluid inclusions is H2O + CH4 and jadeite separately. The results indicated that Pharkant jadeitites were crystallized from H2O + CH4 bearing jadeitic melt which may originate from mantle. The P-T conditions in which the jadeitites were crystallized were speculated to be T】650℃, P】1.5 GPa.

缅甸北部帕敢地区翡翠矿床地质

缅甸翡翠矿床经 10 0多年以来的研究已取得许多重要进展 ,但尚有不少关键问题需要解决。笔者在阅读大量资料、在缅甸观察翡翠原石和野外实地考察的基础上 ,提出对帕敢地区与翡翠矿床地质有关的地层、构造、岩浆岩和翡翠成矿作用的一些认识 ,供同仁研究、参考。