Hydrothermal synthesis of smectite from dickite - Ryu, Kyoung-Won (Chungbuk University. Department of Earth and Environmental Sciences) ; Jang, Young-Nam (Korea Institute of Geoscience and Mineral Resources. Minerals and Materials Processing Division) ; Chae, Soo-Chun (Korea Institute of Geoscience and Mineral Resources. Minerals and Materials Processing Division) ; Bae, In-Kook (Korea Institute of Geoscience and Mineral Resources. Minerals and Materials Processing Division) ; Choi, Sang-Hoon (Chungbuk University. Department of Earth and Environmental Sciences)