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Description
The listing, Black crystal rock ? has ended.
Some kind of black Crystal rock I put it next to the half dollar to show size . I don't know what kind of rock it is if you do please let me know.
Questions & Comments
Yellowstone erupted 600,000 years ago and it runs in that cycle so watch out the clock is ticking. Obsidian is found on the West coast in Oregon ect. also in the SW.
As someone else said it is probably from a Yellowstone super volcano eruption hundreds of millions of years ago. I know there have been other instances of obsidian being found in Illinois and other states.
Another possibility is that it was a trade or conquest item from the local Indian tribes that lived in the area.
I can see that I live on a farm and there are Indian mounds all over the back of my properties I have found tons of arrowheads a.couple of axes grinding stones pottery. So that could be what it was. Thank you for your comments
I have also found many of these rocks in southern Illinois around etown, cave in rock area! They can be very sharp if split! Sliced myself and didn't even feel it..until after the fact!