4919 DUFTITE, Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia September 28, 2019 Steve Africa Namibia Source R.Coulsell, 1999
Mexico North & Central Americas 0556 QUARTZ var. Amethyst, Valenciana Mine, Guanajuato, Durango, Mexico September 28, 2019
Colorado North & Central Americas United States 3071 ANKERITE, SPHALERITE, Empire Zinc Mine, Gilman, Eagle County, Colorado, U.S.A. September 28, 2019
Australasia Australia Victoria 4771 PHILLIPSITE-Na, CALCITE, Freeway Cut, Collingwood, Victoria, Australia September 28, 2019
Brazil South America 1074 COLLINSITE, QUARTZ, Galileia, Doce Valley, Minas Gerais, Brazil September 28, 2019
