Great Eastern mine, Bunkerville Mining District, Virgin Mts, Clark Co., Nevada, USA

Small, brassy particles of pentlandite with black, magnetic pyrrhotite. Collected by Phil Partington. Rolf Luetcke specimen and photo.

Black, platy, magnetic pyrrhotite with golden chalcopyrite. Collected by Phil Partington. Rolf Luetcke specimen and photo.