stone thing - Native American?

[Stan Milgram]

Any ideas on what this is? It was found in a creek by a friend in Missouri.

 

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[Treasure_Hunter]

Looks likev a Discodial in last pic, can you take better pictures?...

 

[Stan Milgram]

Looks likev a Discodial in last pic, can you take better pictures?...

Those are all the pics he shared. Are you sure it's a discoidal? I haven't seen any with a convex half-sphere on one side like this one.

 

[Treasure_Hunter]

Why I asked for more pictures, can't tell from existing pictures, last pic is only one that resembles possible Discoial in progress..

 

[mcb66]

It could be a type of Discodial. It seems like I have seen a fossil inclusion that looks like this though.

 

[Charl]

Perhaps it's a natural clay concretion.....

 

[Stan Milgram]

Perhaps it's a natural clay concretion.....

The one he found is granite. I think TH is right about it being a discoidal.

 

[Charl]

The one he found is granite. I think TH is right about it being a discoidal.

But why would they unbalance a gamestone that was rolled on it's side, by fashioning a large protrusion on one side? Sure looks like a concretion, though. Have never heard of or seen a discoidal fashioned to be unbalanced when rolled. Also, not all concretions are clay. Never heard of one of granite, though; that would actually not be possible for a concretion to be granite. Can you really be certain it's granite? Can see some layering in the center I believe, which should not be there at all if that is actually granite. Doesn't necessarily look like clay stone either, however....

But, maybe it is sandstone, not clay at all. And it does indeed look like a grainy sandstone. Not dismissing your ID of granite; I just can't tell for sure based on your photos, which are just a bit blurry. I would likely still opt for concretion at this point.

https://en.m.wikipedia.org/wiki/Concretion

 

[Stan Milgram]

But why would they unbalance a gamestone that was rolled on it's side, by fashioning a large protrusion on one side? Sure looks like a concretion, though. Have never heard of or seen a discoidal fashioned to be unbalanced when rolled.

That was my thought too, until I read this: http://www.arrowheads.com/index.php/discoidals/632-mississippi-discoidals-ancient-sports-collectibles

Toward the bottom of the page, under circular roller style, they describe one that is asymmetrical -- flat on one end and domed on the other -- just like this one. However, this one was found in southeast MO, not GA, which is strange, but not a rule out factor... it's not unthinkable that a style would spread that distance. The other issue is that circular rollers seem to often be made of finer stone such as quartz. I do want to ID this as granite but yeah, it's hard to tell. I'm checking with the finder himself. He said it was heavy, dense.

Thanks for the help everyone. I'll follow up with a stone id when I hear back from him.

 

[creekhunter]

I have two of those, they are fairly modern. My friend found one and I found the other, he researched them but I can't remember what he said they came out of sorry.

 

[Stan Milgram]

I have two of those, they are fairly modern. My friend found one and I found the other, he researched them but I can't remember what he said they came out of sorry.

Thanks. Let me know if you find out.

 

[rock]

The one he found is granite. I think TH is right about it being a discoidal.

No its not a Discoidal. Could be a Mano type and thats all or can be natural.