STUDY ON THE MOTTLED MUDSTONES OF THE UPPER SHIHEZI FORMATION IN HUAIBEI COAL FIELD
Yue Mei (Dept. of Resources and Environment Sciences, Huainan Institute of Industry)
The assemblage of clay mineral in the mottled mudstone in the upper Shihezi formation is composed of Kaolinite and illite. The crystalinity of Kaolinite is very good. However, the illite shows some mixed-layer phenmenon. There wasstrong diagenesis in the mottled mudstones.