Pyragyrite with Native Arsenic and Argentopyrite

A particularly fine specimen of botryoidal shell-like developments of metallic grey Native Arsenic forming the host matrix for several other species. Including abundant well-formed crystals of Pyrargyrite in groups and scattered over the specimen, measuring to 4 mm, rare metallic grey striated crystals of Argentopyrite to 1 mm are in association.with Marcasite, on a white Quartz matrix and lastly a deposition of white Calcite crystals. From the St. Andreasberg mining area in Germany.