ncat VHD4, Calcite, Highway 7, Madoc, Ontario, Canada November 17, 2019 Steve Canada North and Central Americas TBA
Africa South Africa 30111 Kutnohorite, Rhodochrosite, Calcite, N’Chwaning II Mine, N’Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape, South Africa October 8, 2020
Arizona North and Central Americas United States ncat JP644, Calcite, Peabody Mine (Moore Mine), Cochise District, Little Dragoon Mts, Cochise Co., Arizona, USA September 23, 2019
