AM_Horvathite-(Y) Formula: Na Y C O3 F2 Name: Horvathite-(Y) Unit cell: 6.959 9.17 6.301 90.0 90.0 90.0 , V=402.09 Space group: PMCN (62)

Grice J D , Chao G Y , The Canadian Mineralogist , 35 (1997) p.743-749, Horvathite-(Y), rare-earth fluorocarbonate, a new mineral, species from Mont Saint-Hilaire, Quebec, Locality: Mont Saint-Hilaire, Quebec, Canada