Crystals of dark green Libethenite in an open vug. This locality has produced some of the world's best crystals of this uncommon copper phosphate species. There are 4 individual crystal groups within the vug - hard to see them in the photos because they are along the vug walls, but they are excellent crystals. Comes with an old Jim Watson collection label showing a date of 1979 (these were found in the 1970s and the mine closed in 1980).