Zhanwu Lu^1,2, Wenhui LI¹, Rui Gao¹, Zilong Liu¹, Yongzhi Cheng¹ and Yanzong Ren¹, (1)Institute of Geology, Chinese Academy of Geological Sciences, Beijing, China, (2)Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources, China, Beijing, China