Stannoidite (rare) in Bornite & Chalcopyrite polished slice

Item Description

Stannoidite is a rare copper, iron, zinc, tin sulfosalt and is extremely rare in specimens from ANY worldwide locality. Brass-gray metallic stannoidite is scattered amongst iridescent, magenta to purple bornite and iridescent, golden-metallic chalcopyrite in matrix on this very colorful specimen. Two sides have been sawed and one side polished, which highlights the very bright colors. Specimens of any species are ultra-rare from this Japanese mine and this piece may possibly be unique. This copper-silver-tin mine is now closed. Ex Josef Vajdak Collection.