Co. Antrim Northern Ireland United Kingdom 1616 Cowlesite, Parkgate Quarry, Ballysclare, Co. Antrim, Northern Ireland September 22, 2019
Australasia New Zealand ncat JP3249 Cowlesite, Levyne, Lyttelton Harbour Board Quarry, Lyttelton, Christchurch City, Canterbury Region, South Island, New Zealand October 8, 2019
North and Central Americas United States Washington 5486 Cowlesite, Big Tree Creek, Yacolt, Clark Co., Washington October 2, 2019
Australasia Australia Victoria 0722 Cowlesite, Basalt quarry, Jindivick, Baw Baw Shire, Victoria August 6, 2022
