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
The Grid - A serpentine pseudomorph after carbonate. Credit: Kristina Dunkel (distributed via imaggeo.egu.eu)