Goldfieldite, Chalcopyrite
Prasolovskoe Au deposit, Kunashir Island, Yuzhno-Kurilsky District, Kuril Islands, Sakhalin Oblast, Russia
Triangular sections of goldfieldite crystals in quartz vein. Associating minerals are chalcopyrite, Te-bearing tetrahedrite, native tellur and gold (both are micro size). FOW ~1 cm. Pavel M. Kartashov collection and photo.
© Pavel M. Kartashov collection & photo