3885 Alstonite, Dolyhir Quarry, Old Radnor, Presteigne, Powys, Wales October 3, 2019 Steve United Kingdom Wales Tom Cottrell 2/2005
Powys United Kingdom Wales 5461 Ewaldite, Alstonite, Harmotome, Dolyhir Quarry, Old Radnor, Presteigne, Powys, Wales, UK October 2, 2019
Powys United Kingdom Wales 5452 Alstonite, Calcite, Harmotome, Dolyhir Quarry, Old Radnor, Presteigne, Powys, Wales, UK October 2, 2019
Australasia Australia Tasmania 5735 Alstonite, Harmotome, Rosebery Mine (EZ Mine), Rosebery, Rosebery district, West Coast municipality, Tasmania March 29, 2021
New York North and Central Americas United States 2473 Alstonite, American Talc Corporation Mine, Balmat, New York, USA September 22, 2019
