This copper and cuprite piece is from the Poteryaevskoe Mine in the Rubtsovskoe Cu-Zn-Pb deposit, Rudnyi Altai, Altaisskii Krai, Western-Siberian Region, Russia. This deposit contains 60 different mineral species including the copper oxide cuprite and native copper. This specimen consists of a cluster of an elongated or branching formation made up of of interpenetrating and pyramidal cuprite crystals that have been replaced or partially replaced by native copper. The replacements retain the well defined cuprite habits. This piece is a miniature that measures 1 7/16 x 1 3/8 x 3/4 inches or 37 x 35 x 19 mm.