✅ SOLVED Round rock with flat bottom

[Nathan W]

Found this at my father's place along the top of the creek hill. Curious how this was formed round ball with flat bottom. if it's natural what caused the shape.

 

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[CreekSide]

Post in the rock forum they might know

 

[Tesorodeoro]

Found this at my father's place along the top of the creek hill. Curious how this was formed round ball with flat bottom. if it's natural what caused the shape.

froze and broke on a weak plane?

 

[Treasure_Hunter]

Sorry for late reply to pictures, thanks for posting additional photos. Sorry, wanted picture of bottom to see if any signs of usage as mano, don't see any signs of use or work anywhere. Doesn't appear to be good material in pictures for any tools.

 

[Nathan W]

Sorry for late reply to pictures, thanks for posting additional photos. Sorry, wanted picture of bottom to see if any signs of usage as mano, don't see any signs of use or work anywhere. Doesn't appear to be good material in pictures for any tools.

Ok it was a just very interesting , you see why I grabbed it

 

[Relicgrubber]

Its a Sandstone and iron mix concretion imo...

 

[Older The Better]

As far as shape it could be a little divot on a muddy bottom filled with sand then turned to stone and the mud/shale weathered away leaving a half round shape, or could have been a void from a fossil filled with sand and turned to stone over time… could have been round with a plane of weakness that caused it to split.

 

[CreekSide]

A Cone has that shape but it’s just naturally formed.

 

[Nathan W]

Thanks for the replies and the explanation. It's fascinating. I do really learn all the time on this site