Mineralogical Characteristics of No. 3 Coal in the Jurassic Coalfield of Northern ShaanxiXiaoyun Yan, Shaoqing Huang, Zhipeng Wang, Xiao Tian, Jie Sun, Shaobo Di and Xiangcheng JinE3S Web Conf., 573 (2024) 02022DOI: https://doi.org/10.1051/e3sconf/202457302022