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含煤岩系中的自生矿物是指在同生、成岩、后生及表生阶段时特定的环境中形成的矿物,它是化学及生物化学作用的产物。其中原生自生矿物是在同生和成岩早期生成的,是受一定的沉积环境及成岩作用控制的,因此它们具有指示沉积环境的意义。作者利用原生自生矿物在分析江西省含煤岩系沉积环境时取得了一定的效果。(鱼而)绿泥石,草莓状黄铁矿、胶磷矿及大部分方解石等反映海相环境。高岭石、大部分菱铁矿、黄铁矿、硅质自生矿物及少部分方解石反映了陆相环境。黄铁矿、绿泥石、菱铁矿组合在一定的条件下反映过渡相环境。
Authigenic minerals in a coal-bearing series are minerals that are formed in specific environments at the symbiotic, diagenetic, epigenetic, and epigenetic stages and are the product of chemical and biochemical interactions. Among them, the native authigenic minerals are formed in the early stage of syngenetic and diagenetic processes and are controlled by sedimentary environment and diagenesis. Therefore, they have the significance of indicating the sedimentary environment. The authors make some use of native authigenic minerals to analyze the sedimentary environment of coal-bearing rocks in Jiangxi Province. (Fish) Chlorite, strawberry-like pyrite, phosphate rock and most of the calcite reflect the marine environment. Kaolinite, most siderite, pyrite, siliceous authigenic minerals and a small part of calcite reflect the continental environment. Pyrite, chlorite, siderite combination under certain conditions reflect the transitional phase environment.