4104 VONSENITE, Monchi Mine, Burguillos Del Cerro, Badajoz, Extremadura, Spain September 28, 2019 Steve Europe Spain Source R.Coulsell, 1999
California North & Central Americas United States 4011 CRISTOBALITE, Coso Hot Springs Deposit, Coso District, Coso Mtns., Inyo County, California, U.S.A. September 28, 2019
North & Central Americas South Dakota United States 2892 MITRIDATITE, ENGLISHITE, Tip Top Mine, Fourmile, Custer District, Custer County, South Dakota, U.S.A. September 28, 2019
Australasia Australia South Australia 2180 OPAL-AG, Coober Pedy Opal Field, Coober Pedy, South Aust., Australia September 28, 2019
Australasia Australia South Australia 1324 PEISLEYITE, WAVELLITE, Tom’s Quarry, Kapunda, South Aust., Australia September 28, 2019
