3513 Lansfordite, Davis Mountains, South Maricopa Mountain, Maricopa Co., Arizona, USA October 3, 2019 Steve Arizona North and Central Americas United States
North and Central Americas Pennsylvania Type Locality United States 5723 Lansfordite, Tunnel #1, Nesquehoning Coal Mine, Nesquehoning, Lansford, Carbon Co., Pennsylvania, USA November 28, 2020
