Structural alterations of aromatic fringes by HRTEM for Xinjing Vitrinite-rich anthracite: Impact of low-temperature pyrolysis

•Aromatic fringes parameters of anthracite are quantitatively evaluated.•The factors influencing the distribution of aromatic fringes are analyzed.•The relationship between pyrolysis products and aromatic fringes is elucidated.•Chemically structural thermal transition mechanisms of anthracite are discussed.