Anyone have any idea what kind of rock this is? Not any heavier than you'd expect it to be, and it's non-magnetic. Has red inclusions.
Found on a beach where you sometimes find old bricks and other stone construction debrise that's now used for a breakwater. Thought maybe coal-slag, but it's totally non-magnetic.
Found on a beach where you sometimes find old bricks and other stone construction debrise that's now used for a breakwater. Thought maybe coal-slag, but it's totally non-magnetic.
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