Colorado North and Central Americas United States ncat JP1777, Celadonite, Nontronite, Wolf Creek Pass, San Juan Mts, Mineral Co., Colorado, USA September 23, 2019
Colorado North and Central Americas United States ncat RAM4 CW11 Nontronite, Celadonite, Wolf Creek Pass, Archuleta County, Colorado, USA October 2, 2024
Australasia Australia Tasmania 1443 Nontronite, Siderite, Boral Quarry, Bridgewater, Tasmania September 22, 2019
