Oklahoma Digger
Jr. Member
- May 14, 2013
- 78
- 17
Can anyone I.D. this rock? Have sum black burnt looking spots. Turned shiny like metal in one area when I broke it to see what the inside looked like. Also appears rusty crusty top layer. Thanks!!!
It looks like a form of sandstone or a metamorphosed sandstone. It can get a brown iron oxide coating over it. Were you able to break it with your hands?