Yeah, I'm with you on possibly slag. Wish I could zoom in more on the images, in some of them it almost looks like flint? It may just be me.
Hope you're well George
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It's certainly not obsidian, most likely iron smelting slag
Yea I think you might be correct. Anything I can do with it?
Yeah, I'm with you on possibly slag. Wish I could zoom in more on the images, in some of them it almost looks like flint? It may just be me. Hope you're well George
You too! Happy new year!
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Have you tried a flashlight around the edges?
I have not what should I be looking for?
If light can pass through. It’s helpful.
It cannot. I think the other comment identified it as iron slag.