The discovery and geological significance of coal-formed graphite in Chongyi coal mine in Jiangxi Province

In order to study the characteristics of coal-formed graphite in Chongyi mine, Jiangxi Province, the coal in Laoshan Section of Upper Permian Longtan Formation in Chongyi mining area was tested and analyzed by means of optical microscope, X-ray diffraction(XRD), Raman spectroscopy and HRTED. The test results showed that the graphitization maceral could be observed under the optical microscope. The XRD diffraction pattern showed a graphite diffraction peak of d₀₀₂, and the Raman spectrum showed a characteristic peak of graphite(G peak) with sharp peak shape. Multilayer ordered structure of carbon layer was observed by high resolution transmission electron microscope, and the carbon layer had been flattened. The results show that the samples in Chongyi mining area of Jiangxi Province have developed graphite crystal structure to different degrees, and there have been coal-formed graphite minerals. The paper lays the foundation for further exploration and development of graphite resources.