Malachite, Azurite

Unknown Owner

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An unusual specimen that looks like it once was a large, robust azurite crystal, which became hollowed out and then replaced over time with beautiful, fibrous malachite in the cavity. It could just be a natural cavity with some odd, straight-edge contacts that constrained its growth and makes the sides look as if they were crystal faces, though. Unusual Morenci material, in any case. Ex. Harold Urish Collection.