6534 MOTTRAMITE, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia September 28, 2019 Steve Africa Namibia Source B & M Day, 2010
Nevada North & Central Americas United States 5793 PHOSPHOFIBRITE, Silver Coin Mine, Valmy, Humboldt County, Nevada, U.S.A. September 28, 2019