Abstract: The occurrence of mineral impurities and separating purification of massive quartz were investigated for a company of Jiangsu province in China with the optical microscopy,electron microprobe(EMPA-SEI、EDS) and inductively coupled plasma spectroscopy (ICP).The research results show that impurity elements are mainly Al,Na,Ca,Fe,Li,K and Ti.The mineral inclusions are mostly primary which occurred within halite for less than 20μm and muscovite for less than 120μm in the interface of quartz crystal.The elements Na existed in form of NaCl ,F,Mg,K,Ti,Mn,and Fe and part of Al occurred within the muscovite.Meanwhile,part of element Al substituted for Si with the isomorphism in the quartz lattice.The elements Ca and part of S existed in oxide.The elements Ba and the rest of S occurred within the barite,The elements Cu with Zn paragenesised into an oxide mineral.During these processing of separation and purification such as roasting,water quenching and alkali leaching and mixed acid leaching,99.991wt% high purity quartz was prepared