Colorado North and Central Americas United States ncat JP1777, Celadonite, Nontronite, Wolf Creek Pass, San Juan Mts, Mineral Co., Colorado, USA September 23, 2019
Australasia New Zealand ncat JR10 Phillipsite-K, Erionite-K, Nontronite, Moeraki Point, Otago Region, New Zealand March 10, 2024
Australasia Australia Tasmania 1443 Nontronite, Siderite, Boral Quarry, Bridgewater, Tasmania September 22, 2019
