North and Central Americas United States Washington 5486 Cowlesite, Big Tree Creek, Yacolt, Clark Co., Washington October 2, 2019
Australasia New Zealand ncat JP2425 Cowlesite, Aranga Quarry (Stone’s Quarry; Hood Road Quarry), Aranga, Kaipara District, Northland Region, North Island, New Zealand October 8, 2019
Co. Antrim Northern Ireland United Kingdom 0635 Cowlesite, Dunseverick, Giants Causeway, Co. Antrim, Northern Ireland September 20, 2019
Co. Antrim Northern Ireland United Kingdom 1616 Cowlesite, Parkgate Quarry, Ballysclare, Co. Antrim, Northern Ireland September 22, 2019
