3637 CALUMETITE, Centennial Mine, Calumet, Houghton County, Michigan, U.S.A. September 28, 2019 Steve Michigan North & Central Americas United States Source M.Richards, 2005
Europe Italy 6497 SUDOITE, Zebru Valley, Valfurva, Sondrio Province, Lombardy, Italy September 28, 2019
Peru South America 0238 PYRITE, Huanzala Mine, Huallanca District, Huanrco Department, Peru September 28, 2019
Africa South Africa 0624 RHODOCHROSITE, Wessels Mine, Hotazel, Kalahari Manganese Fields, Northern Cape Province, South Africa September 28, 2019
