4050 Jahnsite-(CaMnFe), Sapucaia Mine, Galileia, Minas Gerais, Brazil October 4, 2019 Steve Brazil South America Jim Ferraiolo 6/2005
North and Central Americas South Dakota United States 4493 Rockbridgeite, Jahnsite-(CaMnFe), Tip Top Mine, Fourmile, Custer Co., South Dakota, USA October 5, 2019
New Hampshire North and Central Americas United States 4491 Jahnsite-(CaMnFe), Palermo #1 Mine, North Groton, Grafton Co., New Hampshire, USA October 5, 2019