Affiliation: | School of Resources and Geoscience, China University of Mining and Technology, Xuzhou 221116, Jiangsu, P.R.China;School of Resources and Geoscience, China University of Mining and Technology, Xuzhou 221116, Jiangsu, P.R.China;School of Resources and Geoscience, China University of Mining and Technology, Xuzhou 221116, Jiangsu, P.R.China;School of Resources and Geoscience, China University of Mining and Technology, Xuzhou 221116, Jiangsu, P.R.China |