Diaphorite, Pyargyrite, Arsenopyrite | Rockvale Arsenic Mine, Rockvale, NSW, Australia. Ex Proff. Laurie Lawrence (Aus) specimen. Dark grey areas amid pyargyrite and arsenopyrite. Determined by XRD. See: Lawrence, L.J.; Chand, F., (1962). Ore minerals of the Rockvale Mine, N.S.W., with special reference to unmixing textures. Aust. Inst. Min. Mett. Proc., 204, 161-183. 100x50x40mm. (No. 1908)
