6049 Vinogradovite, Poudrette quarry, Mont Saint-Hilaire, Quebec, Canada October 2, 2019 Steve Canada North and Central Americas Small colourless prismatic crystals
Canada North and Central Americas ncat ANK MSH103 Vinogradovite, Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada December 12, 2022