4144 WILLEMITE, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia September 28, 2019 Steve Africa Namibia Source C.Kovac, 2005
California North & Central Americas United States 4010 CRISTOBALITE, Coso Hot Springs Deposit, Coso District, Coso Mtns., Inyo County, California, U.S.A. September 28, 2019
Australasia Australia South Australia 3853 PYROLUSITE, Iron Monarch Mine, Iron Knob, South Aust., Australia September 28, 2019
Australasia Australia South Australia 1023 WULFENITE, Avondale Mine, Lyndhurst, South Aust., Australia September 28, 2019
Missouri North & Central Americas United States 1779 CALCITE, Sweetwater Mine, Ellington, Reynolds County, Missouri, U.S.A. September 28, 2019
