1. Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Science and Technology, China University of Geosciences, Beijing, 29 Xueyuan Road, Beijing, China 100083
2. Geosciences Department, University of Wisconsin-Parkside, Kenosha, WI 53144, USA
3. Department of Earth Science, National Cheng Kung University, 1 University Road, Tainan, Taiwan 70101