rjfisherman Posted April 18, 2020 Share Posted April 18, 2020 I found this in southeast Missouri in a layer of thick reddish clay in a transitional soil area with a light gray gravel. Link to comment Share on other sites More sharing options...
dhiggi Posted April 19, 2020 Share Posted April 19, 2020 Probably geological in origin; it looks like it has sedimentary layers, but wait for expert opinions before deciding what you want to do with it Link to comment Share on other sites More sharing options...
Rockwood Posted April 19, 2020 Share Posted April 19, 2020 Banded chert ? Link to comment Share on other sites More sharing options...
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