Through studies on inner textures and structures of sideritic ooides and microlithic features of pyrite and marcasite, the paper discussed their genetic geochemical conditions and forming mechanics.

• 摘要押通过对煤系地层中菱铁质鲕粒内部结构构造和黄铁矿、白铁矿微晶特征的研究,探讨了其生成的地球化学条件、形成机理,为地层对比、沉积地球化学条件的恢复等提供了依据。