1. Chang'an University; Xi'an 710054 Shaanxi China
2. Key Laboratory for the study of Focused Magmatism and Giant Ore Deposits; MLR Xi'an 710054 Shaanxi China
3. University of Regina, Regina; SK, S4S 0A2 Canada
4. Geophysical and Geochemical Exploration Corporation of Northwest Geological Exploration and Mining Bureau for Nonferrous Metals; Xi'an 710086 Shaanxi China