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NH_4-illite in Permo-Carboniferous coal-bearing strata,North China
Affiliation:LIU Qinfu , ZHANG Pengfei , DING ShuliLIN Xisheng and ZHENG Naixuan(Beijing Graduate School, China University of Mining and Technology, Beijing 100083, China)Hebei Civil and Engineering Institute, Handan 056038, China.Research Institute of Petroleum Exploration & Developement, Beijing 100083, China.
Abstract:
Keywords:coal bed  parting  NH4-illite  origin.
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