North and Central Americas Pennsylvania United States 5623 Lepidocrocite, Mud Lake – Grubb Lake, West Hempfield Township, Lancaster Co., Pennsylvania, USA October 5, 2019
North and Central Americas South Dakota United States ncat JP2341, Robertsite, White Elephant Mine, Cicero Peak, Pringle, Custer District, Custer Co., South Dakota, USA September 23, 2019
