Large, Copper with Calcite

Item Description

An impressive, sculptural, large, nearly solid mass of sharply crystallized copper from the famous Onganja Mine. This striking 360-degree specimen with a lustrous coppery patina has overall arborescent spinel-twinned form and is composed of a myriad of super sharp tiny tetrahexahedral crystals. The back has embedded sections of large calcite rhombs, adding pizzazz. Classic, artistic, hefty and very rich copper ore from the locale. Onganja is famous for well-crystallized coppers and world-class cuprite crystals and this is an excellent large copper specimen. The mine closed in 1974. Mass is 831 grams or 1.8 pounds. A very hefty, impressive specimen from this mine. value d$750-1250