According to research of mineralogy, petrology and geochemistry, we discuss kaolin mineral composition, chemistry composition, and change rules and origin of Datong coal series.

The hydrocarbon source rocks of coal measures developed in this basin were studied on the basis of drill cores, which involved in many fields such as geology, organic geochemistry and petrology.

Marks of coal petrology, parameters of organic geochemistry and yield-oil of thermal simulated experiment are provided evidence for availability of"FMT"evaluation method.