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
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
Georgia (US) North and Central Americas United States 5569 Rockbridgeite, Cacoxenite, Girard, Girard District, Burke Co., Georgia, USA October 5, 2019
New Hampshire North and Central Americas United States 4633 Whitmoreite, Strunzite, Rockbridgeite, Siderite, Palermo No. 1 Mine, Groton, Grafton Co., New Hampshire, USA October 5, 2019
Australasia Australia Victoria ncat JP2839 Pharmacosiderite, Rockbridgeite, Gravel Hill quarry, Ascot Hills, Dookie, City of Greater Shepparton, Victoria September 23, 2019