McDonald A M , Chao G Y , The Canadian Mineralogist , 45 (2007) p.1281-1292, Martinite, a new hydrated sodium calcium fluorborosilicate species from Mont, Saint-Hilaire, Quebec: description, structure determination and genetic implications, Note: changed F(y) to match reported bond distances, Locality: Poudrette quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada