JH Stone Galleria Petrified Swamp Bog 112x97x5mm 103g Oregon Miocene

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A.k.a., Gary Green Jasper and Larsonite. 14 million years ago, Yellowstone was under Oregon, near what is now the town of McDermitt, and an eruption covered swamp vegetation and mud with ash. The colors are from iron, aluminium, potassium, sodium and calcium.

This slice measures 112x97x5mm and 103g.

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