1. Lecturer, School of Earth Science and Engineering, Xi’an Shiyou Univ., Xi’an 710065, China (corresponding author).
2. Professor, Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Mineral, Shandong Univ. of Science and Technology, Qingdao 266590, China; Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266071, China.
3. Professor, School of Energy Resources, China Univ. of Geosciences, Beijing 100083, China.