Is this something besides a garden rock addition?

[pepperj]

Got this the other day. Just sitting on the top of a newly 4" tilled field where I was detecting.
It weighs 1.2 lbs
Strange surface to it.

 

[opalboy]

That’s odd, you would think it would look rubbed or ground. Good find!

 

[Blackfoot58]

interesting surface for sure.

 

[pepperj]

interesting surface for sure.

Close up of the surface

 

[Treasure_Hunter]

Can you post side view?

 

[CreekSide]

Has the right shape for a Mano but could have been carried in and just never used. I don’t see any smoothness on it from use. I’d brought it home

 

[pepperj]

Can you post side view?

The last 2 photos are the side views.
I can provide the ends if you want.