Scanning electron microscopy (SEM) reveals that great filaments, characteristic of microorganisms, are associated with the secondary phosphate mineralization. Continuous degradation and fragmentation of the stromatolitic mat has created pellets, peloids, and intraclasts all enriched in secondary apatite. Degrading recrystallization within the edges of the primary apatite crystals has ... https://federicoo998ofx9.wikiconversation.com/user