Found this while wading up a creek.....vibrant orange glowing in the water....pretty light weight rock.....think it is some sort of pumice or volcanic rock.....found in Robertson co tn
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Orange rock
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Looks like a heavy creek stained patina on a piece of limestone. I found similar rock in a stream here and used another rock to chip a piece off to see a glowing white limestone under the crust. The white rock canvas gets a bright orange glow when there is a high iron/mineral content in the water that attaches to it over time making a cool patina.They are eye catching in the water also lolSE ARKANSAS
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