The structures in this photo might look three-dimensional, but they are completely flat. It is a photo of a polished thinsection of a rock, taken through a petrographic microscope under cross-polarized light. The width of the image is just 2 mm. The brownish mineral around the edges is carbonate, the white to grey mineral in the centre is serpentine, a water-bearing silicate mineral. The different ...[Read More]
Imaggeo on Mondays: The Grid – A serpentine pseudomorph after carbonate
![Imaggeo on Mondays: The Grid – A serpentine pseudomorph after carbonate](https://blogs.egu.eu/geolog/files/2020/05/a1fa7f516b3f3e4446fe8c023ca097e2-700x400.jpg)