My question is not specifically about identification of this piece of rock. Instead I am focusing on the origin of the scar marks on this rock. I have found this stone in the pebbles in the path. This stone is different from any of the pebbles present nearby. What makes these straight line curves on this stone ? Also what are the yellow dusts on this stone ?
I found it in our university campus. I am not sure about its origin. Possibly it was there in the sand that was used for building construction. There is no other stone nearby that have similar scar marks or any scar marks at all. Location and Surrounding Pebbles Adding Photos taken with Flash and using USB port and Blade for scale. Harder than blade. The unclear glossy line is where I tried to scratch with the blade. I have no idea about these marks. However as these lines are all straight lines sometimes it looks like a fossil of a tree that wrapped around the stone for long years. Some of the figures look like some primitive flower like shape.