Another what is this, if anything post.

SweepNbeep

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Mar 3, 2017
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While exploring along the banks of the Missouri River in the Dakota's, my son discovered this rock. It's not perfectly flat, but it does measure almost exactly 2 1/8" x 2 1/8." As you can see, it's got four 90 degree, albeit rounded corners, making almost a perfect square. It averages 1/4" in thickness, and seems to be of a soft stone like sandstone, or limestone.

It doesn't seem to be worked, and if it is man made, I have no idea what it is. But this area of the Missouri is loaded with American Indian history and artifacts, so perhaps it's something? It just seems like the odds of this thing forming like that on it's own are so astronomical, that it's hard to believe it's natural.

The pictures don't do it justice, I took them in a hurry, and the light was from an angle, making the whole thing look less square that it actually is. In the hand it truly is almost perfectly square. What say you experts? My guess is it's a geofact, because most artifacts are painfully obvious, but this one's got me doing a double take. Thanks.

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A pic would be nice
 

There were 3 of them. I still see one. Not sure where the others went??? I'll try and re-post.

I see 3 pics now. If you don't please let me know.
 

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I see the pics, may be a geofact, but I'm not anywhere near an expert on these.
 

Hmmm. I see three pics just fine.

Sent from my SAMSUNG-SM-N900A using Tapatalk
 

For some odd reason I had to confirm my email address with photo bucket. I think you should see them now. Do you see them now? I know smokeythecat sees them. Anyone else.
 

what ever it is it is neat. Cant say I have ever seen a completely square rock.
 

LOL!

I don't see them pics here, but saw them on my I-phone yesterday.

It looks like a natural water worn piece to me.

Be careful exploring & picking up rocks on the Missouri River, it is taboo here, and they do keep an eye on it.
 

I see them now but sorry to say its natural.
 

I see, and I agree with Rock. Ma Nature messes with us all from time to time.
 

SweepNBeep have you guys ever visited the Missouri-Yellowstone Confluence Interpretive Center south of Williston? It's a GREAT museum with lots of Lewis & Clark and Native American history.
 

No, but it sounds cool. I love that kind of stuff. I've been to Fort Mandan, that's okay. And just for the record, we hunt private land, along the river, but not on the corps ground.
 

It averages 1/4" in thickness

It's kind of like a floor tile. I'm pretty much resigned to the notion that it is natural. But it's still a neat find in my opinion. I'm no geologist, but this has got to be extremely rare in nature.
 

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Crystals form in many nice angles but your piece looks to be a quartzite base type of rock probably grainy on the inside. Water can wear rocks smooth and round and sometimes square depending on how they tumble and where the water hits it. I would have to say next time maybe post all sides not just the 2 sides posted now. They did like that type of sediment rocks for pecking stones and grinders. I have one that is cubic made from the type of stone that is a grinder but I found mine in a campsite and mine has dimples from use on each face. So keep looking you might find something on your next trip. Thanks for posting it, rock
 

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