Excellent Copper (old classic)

Item Description

Very sharp, elongated, spinel-twinned and tetrahexahedral copper crystals with a nice patina form a very aesthetic, arborescent specimen from the much less well-known Northwestern Mine. Old-time material, as this mine was organized in 1845. operated intermittently until 1865, when it was absorbed by the well-known Central Mine. Looks great from either side. Classic form and high quality from either side.