Odd rock - Its round, smooth, hollow and tough... Ive no idea what it is really.

[zerosimms]

Odd rock - It's round, smooth, hollow and tough... I've no idea what it is really.

So today I discovered this odd rock in the middle of the English country side (North downs, Kent) to be precise.
It caught my attention and I originally thought it was a moldy bouncy ball, but as soon as I lifted it I realized it wasn't.



I'm totally lost as to what it is, so any feedback would be great.

I've done a bit of research and stumbled across 'clay marbles' but I'm not convinced it is one due to the exterior of the stone.
Here is a video which may give you more visual information than the photo. Any help/thoughts/comments greatly appreciated

 

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[MoJoe]

When you shine a light in it can you see any crystals inside? I was just thinking a geode with a hole in it?

 

[zerosimms]

When you shine a light in it can you see any crystals inside? I was just thinking a geode with a hole in it?

Not really, the hole's are so small that any light that does get in there causes great shadows. I'll research geode, never heard of them/it before

 

[BadM0nkey]

Did you check to see if it is metallic? Ferrous?

Maybe you should talk to a local archeologist.

 

[BadM0nkey]

Oh, and don't chip it or cut it in-case it is a valuable artifact.

 

[zerosimms]

Did you check to see if it is metallic? Ferrous?

Maybe you should talk to a local archeologist.

I checked if it was magnetic or not, as far as I can tell it's not magnetic at all. I'll see if we have a local archeologist, good idea

Just wondered if there was going to be an obvious answer, guess it's very hard to diagnose over the internet

 

[BadM0nkey]

When you speak to the archeologist ask if could be something like a 'sprinckloit'. These were hollow balls filled with black powder and a fuse that were the early handgrenades.

You should also try to find a local geologist. Your county probably has one on staff. It is possible it is a natural formation like a geode or moqui ball.

Stone ball - Wikipedia, the free encyclopedia