What Type of Rock Is This?

[Oklahoma Digger]

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!!!

 

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[bmartin0693]

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?

 

[Oklahoma Digger]

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?

Used a small hammer. Thx!!!

 

[bmartin0693]

Hmmm.....I'm just giving an opinion, nothing to strictly go by, but from what can see, it still seems like a metamorphosed sandstone. I'm guessing OK has plenty of that, I've never been there before though. It seems like it is a more of a natural occurring rock example.