A PRELIMINARY STUDY ON THE NON-DESTRUCTIVE IDENTIFICATION OF CLINOPYROXENE JADES FROM MYANMAR

Among various types of Myanmar jades, the most important are the jades mainly consisting of clinopyroxene minerals. Those jades include jadeite-jade, omphacite-jade and kosmochlor-jade. Now, different views on whether omphacite jade and kosmochlor-jade should belong to jadeite-jade are held out. The paper mainly discusses the non-des tructive identification methods to separate jadeite-jade from omphacite-jade and kosmochlor-jade. The experimental results show that the quantitative analysis of chemical composition by EDXRF combining the reflectance FTIR can determine jade with relative: simplicity and homogeneity in mineralogical composition effectively. On theory, according to the data of EDXRF and the spectra of FTIR, the relations between EDXRF and FTIR in two series of jadeite-astridite-kosmochlor and jadeite-omphacitic jadeite-omphacite are discussed.