Hello all, Just joined the site to help identify this rock I found in Middle TN yesterday. Very interesting on the inside, it looks like little octagons of blue on the inside. Thanks to all in advance and thank you for any help. Cheers
25 July update. I've included photos of the rock as a whoe. Both dry photos as well as wet. Thanks all.
25 July update. I've included photos of the rock as a whoe. Both dry photos as well as wet. Thanks all.
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