

Impact breach from astrobleme Puchezh-Katunki, Russia
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Impact breach, it is a shocked and thermalized gneiss, presence of plagioclase transformed into mascelynite. From astrobleme: Puchezh-Katunki, Nijni-Novgorod province in Russia. 52g heel, one side polished 6,5x2,5x2,5cm