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Bonattite, Piypite


Bonattite : CuSO4·3H2O, Piypite : K2Cu2[O|(SO4)2]

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Locality: Tolbachik volcano, Kamchatka Oblast', Far-Eastern Region, Russia
Light-blue bonattite pseudomorphose after large monocrystal of Chalcocyanite (CuSO4). It has cracked and distorted during expansion connected with hydratation of the Chalcocyanite. Very minor light green Piypite is also present.
Field of view 6 mm. Collection M. Kampf No 91-020.

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