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吕合及小龙潭第三纪褐煤中大量煤核的发现,不但为成煤植物演化提供了宝贵资料,也揭示了成煤植物的古生态及群落组合,从而可以把不同煤质的成因直接与成煤植物属种联系起来。本文系统地总结了煤核成因的研究状况,分别讨论了吕合煤矿和小龙潭矿区各类煤核的形成机理,论证了煤化作用早期凝胶化作用与矿化作用序次关系对煤核形成的重要性;在成岩阶段不同植物结构凝胶化的超前和滞后于矿液的活动,是决定植物能否转变为煤的重要条件。通过对煤核的研究认为,煤的内部灰分一部分可能来自成岩阶段凝胶化物质中矿物质点的晶体再生。
The discovery of a large number of coal cores in Luehe and Xiaolongtan Tertiary lignite not only provided valuable information for the evolution of coal-bearing plants, but also revealed the paleoecology and community assemblage of coal-forming plants so that the genesis of different coal qualities can be directly related to Coal plant species associated. This paper systematically summarizes the research status of the coal core genesis, discusses the formation mechanism of various types of coal nuclei in Luhe coal mine and Xiaolongtan mining area respectively, and demonstrates that the relationship between gelation and mineralization in the early stages of coalification has a positive effect on the formation of coal nuclei The importance of gelatinization of different plant structures during the diagenetic stage leads to and lags behind the activity of the mineral fluid and is an important condition for determining whether a plant can be transformed into coal. According to the research on coal core, some of the internal ash of coal may come from the crystal regeneration of the mineralized point in the gelation material of diagenesis stage.