4388 Polybasite, Stephanite, Husky Mine, Elsa, Yukon, Canada October 5, 2019 Steve Canada North and Central Americas Ray Hill 7/2007
Idaho North and Central Americas United States ncat JL2456 Polybasite, Quartz, De Lamar Mine, Owyhee Co, Idaho, USA October 15, 2019
Mexico North and Central Americas 0179 Acanthite (after Polybasite), Valenciana Mine, Guanajuato, Mexico September 18, 2019
