Identification of Injection-Plastic Jadeite Jade by Portable Near-Infrared Mineral Analyser

At present, it is difficult to identify the opaque injection-wax and injection-plastic jadeite jades with the traditional mid-infrared spectrum method．The jadeite jade, injection wax and injection-plastic jadeite jade samples are tested and their near-infrared reflectance spectral characteristics are analysed by using the portable near-infrared mineral analyser（PIMA）．The testing comparison of the mid-infrared transmission spectra of the semi translucent samples is also conducted．The results show that the near-infrared reflectance spectra of the transparent or opaque jadeite jade, injection-wax and injection-plastic jadeite jade samples could be acquired by using the PIMA（BJKF-1）．And these spectral characteristics are significant differences among the three, which could be used to identify the jadeite jades, injectionwax and injection-plastic jadeite jades．