
FOV 2.4 X 3.5 mm. Gift from the Horváths. Analyzed (CMN) find. This superb specimen of alicewilsonite-(YCe) is from the (analyzed) find made in 2000, and illustrated (under MSH UK-33A) in Horváth et al (2019 p. 496). However, in this photo, I have chosen to emphasize the stacked platy appearance of the aggregate, rather than their luster. From: Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada — Photo: Modris Baum · CC0
Alicewilsonite-(YCe)
Alicewilsonite-(YCe) is an IMA-recognized mineral species in the carbonate class, with the chemical formula Na₂Sr₂YCe(CO₃)₆·3H₂O.
It crystallizes in the triclinic crystal system (space group P1). It is a member of the Mckelveyite structural group.
IMA symbol Aws-YCe, IMA status: approved, named in 2020.