Arizona North and Central Americas United States 7351 JL3681 Cornubite, Hardshell Mine, Hardshell Gulch, Harshaw, Harshaw Mining District, Patagonia Mountains, Santa Cruz Co., Arizona, USA December 25, 2020
North and Central Americas South Dakota United States 4588 Sinkankasite, Barker-Ferguson Mine, Pennington Co., South Dakota, USA October 5, 2019
