Czech Republic ncat JP2592 Proustite, Jachymov (St Joachimsthal), Jachymov District (St Joachimsthal), Krusne Hory Mts (Erzgebirge), Karlovy Vary Region, Czech Republic October 11, 2019
Canada North and Central Americas 0794 Xanthoconite, Proustite, Dyscrasite, O’Brien Mine, Coleman Township, Cobalt area, Cobalt-Gowganda region, Timiskaming District, Ontario, Canada September 20, 2019
Colorado North and Central Americas United States ncat JP1566, Proustite, Sphalerite, Chalcopyrite, Pyrite, Galena, Wyoming Mine, Gilman District (Battle Mountain District; Red Cliff District), Eagle Co., Colorado, USA September 23, 2019
