Scanning electron microscopy (SEM) reveals that great filaments, characteristic of microorganisms, are connected with the secondary phosphate mineralization. Continuous degradation and fragmentation from the stromatolitic mat has developed pellets, peloids, and intraclasts all enriched in secondary apatite. Degrading recrystallization within the edges of the first apatite crystals has... https://georgem788mfv8.aboutyoublog.com/profile