2136 QUARTZ var. Amethyst, Cerro de la Concordia, Piedra Parada, Mun. de Tatatila, Veracruz, Mexico September 28, 2019 Steve Mexico North & Central Americas Source K.Davy, 1981
Nevada North & Central Americas United States 0108 CORDEROITE, CHALCEDONY, McDermitt Mine, Opalite District, Humboldt County, Nevada, U.S.A. September 28, 2019
Europe Slovakia 2793 TRIDYMITE, Vechec, Northern Slanske Mts., Presov Region, Slovakia September 28, 2019
Australasia Australia Tasmania 3266 HUBNERITE, QUARTZ, Aberfoyle Mine, Rossarden, Tasmania, Australia September 28, 2019
Australasia Australia South Australia 6424 USHKOVITE, Tom’s Quarry, Kapunda, South Aust., Australia September 28, 2019
