JH Stone Galleria Petrified Swamp Bog 120x110x8mm 183g 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 120x110x8mm and 183g.

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