Cobaltite in Pyrrhotite

Two brilliant metallic, silvery, textbook-shaped 1.5 cm Cobaltite crystals centered on a Chalcopyrite-Pyrrhotite matrix from the classic locality for the species at Hakansboda, Sweden. This specimen is nicely composed with the mirror-bright faces of the sharply formed Cobaltites displayed prominently. This locality has arguably produced some of the best Cobaltite specimens ever. Ex Mike Wortham

Locality: Hakansboda, Lindesberg, Vastmanland, Sweden

Composition: copper arsenic sulfarsenide