STUDY ON CLINOPYROXENE MINERALS OF JADEITE JADE

Abstract Jadeite jade mainly consists of jadeite (NaAlSi₂O₆), which occurs as mineral aggregate. Besides the jadeite, there are some other clinopytoxene minerals in the jade, such as chromian jadeite ， diopsidic jadeite, ureyitic jadeite, omphacite，ureyitic omphacite, diopsidic ureyite, jadeitic ureyite, ureyite, diopside, jadeitic clinoenstatite, diopsidic clinoenstatite, aegirine-augite and aegirine etc.. Only jade which contains more than 50 mol % of jadeite component (NaAlSi₂O₆) could be called a jadeite jade. A jade which mainly composed of other clinopyroxene minerals should be called aegirine jade, aegirine- augite jade, omphacite jade, diopside jade，ureyite jade, diopside-jadeite jade and diopside-ureyite jade, res pectively.