ncat JP348, Rockbridgeite, Big Chief Mine (Johnson pegmatite), Glendale, Keystone District, Pennington Co., South Dakota, USA September 23, 2019 Steve North and Central Americas South Dakota United States Jack Nelson Collection
North and Central Americas South Dakota United States 4493 Rockbridgeite, Jahnsite-(CaMnFe), Tip Top Mine, Fourmile, Custer Co., South Dakota, USA October 5, 2019
Cornwall England United Kingdom ncat JP1660 Beraunite, Rockbridgeite, Gravel Hill Mine (Cliff Iron Mine; Penhale Iron Mine), Perran Iron Lode (Great Perran Iron Lode), Perranzabuloe, Cornwall, England, UK October 8, 2019
Europe Germany 2219 Stewartite, Strunzite, Rockbridgeite, Mitridatite, Hagendorf-Sud, Bavaria, Germany September 22, 2019
Georgia (US) North and Central Americas United States 5569 Rockbridgeite, Cacoxenite, Girard, Girard District, Burke Co., Georgia, USA October 5, 2019
