I done told y'all what it is....see post #3
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I’ve tried to contact GA tech and Kennesaw state with no luck. I’ll email that curator or go and see him if I need to. Thank you very much for the suggestionYou’re on the northeast side. If you are ever around the Tellus science museum the curator would know. Geolologist by the name of Ryan Roney. Extensive undergrad & grad work.
Looks like slag from iron ore. We find it all over Stamp Creek in Bartow county.