micro-photo of geological thin section under cross-polarized light.

abstract analysis aragonite background bacteria calcareous calcite carbonate cement crosspolarized crystal crystalisation detail foraminifera fragment gastropod geological geology laboratory light limestone marine micrite micro microbialite microorganism microphoto microscope microscopy mineral mineralogy oolitic organism photo quartz rock sand science section sediment shell silt stone stromatolite texture thin thinsection under work zoom