Sandstone from Turkey
Also known asçankiri Serpantini.
Macroscopic descriptionThe tracers of regional metamorphism can be seen inside the rock and fracture zones is generally filled by magnesite as secondary minerals. The dominant color is dark green, but fracturres filled by light green serpentines.
Petrographic descriptionHoney-comb texture, serpantine and rombohedral pyroxene crystal containing serpantinite talc and magnesite are present in voids as secondary minerals.