Copper Pseudomorph After Cuprite With Cuprite
Cabinet, 14.6 x 8.7 x 4.7 cm
Rubtsovskiy Mine, Altaiskiy Krai, Siberia, Russia

One of the larger good specimens recovered from the fall-2011 pocket of copper altering cuprite, this piece masses in at just under a kilogram. It consists of a heavy core of cuprites, intergrown together and almost completely replaced by copper. Several crystals (to 2.5 cm size) on the periphery edges of the piece show partial replacement to various degrees, of this unusual pseudomorphing. While not the most elegant of the find, this piece has a robust size and heft to it that adds importance, and it looks dramatic on a shelf. Joe Budd photos.