Metal-injected carbonate fossil in Posidonia Shale

Highly magnified image (100,000 times magnification) showing a metal injected carbonate fossil in Posidonia Shale. The bright part is the metal which indicates the connected porosity. Width of the picture is 3 ┬Ám, see Klaver et al., (2016, http://dx.doi.org/10.1016/j.coal.2016.03.003) for further information.

Metal-injected carbonate fossil in Posidonia Shale