8052 Elpidite, Poudrette quarry, Mont Saint-Hilaire, La Vallee-du-Richelieu RCM, Monteregie, Quebec, Canada October 5, 2019 Steve Canada North and Central Americas ex Bernie and Margaret Day Collection
Canada North and Central Americas ncat ANK MSH110 Elpidite, Gaidonnayite, Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada December 13, 2022
Canada North and Central Americas ncat JP1643 Elpidite, Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carriere Mont Saint-Hilaire; MSH), Mont Saint-Hilaire, La Vallee-du-Richelieu RCM, Monteregie, Quebec, Canada October 11, 2019
North and Central Americas United States Washington 4741 Zircon, Elpidite, Aegirine, Arfvedsonite, Astrophyllite, North Cascades Hwy, Milepost 166, Washington Pass, Golden Horn Batholith, Okanogan Co., Washington, USA October 5, 2019
Canada North and Central Americas 8006 Elpidite, Poudrette quarry, Mont Saint-Hilaire, La Vallee-du-Richelieu RCM, Monteregie, Quebec, Canada October 5, 2019
