Bertrandite. This specimen has extraordinarily large crystals of peach colored bertrandite! The largest crystals reach up to 1+ cm in length. Also present are crystals of pyrite to 0.6 cm across. The matrix is predominantlt muscovite with minor pyrite. Kounrad nr. Balkhash, Karaganda Oblast', Kazakhstan, 5.5 x 5 x 3 cm

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