Sunflower structure of pyrite in Lignite of Western Kachchh, Gujarat (India): Insights on its origin and mechanism

Abstract Textural analysis of pyrite has been carried out in the lignites of Kachchh Basin to decipher its micro-morphological character. The study entails the intermediate stage and authigenic sunflower structured pyrite. The origin, characteristics, shape and distribution of pyrite within Tertiary lignites has been comprehensively explored through petrography, ultimate analysis and scanning electron microscopy (FE-SEM). Along with the sunflower structure, the study has also revealed the presen