| References: | Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 112; www.hedegaard.com. Mineralguide, Ivittuut kryolitbrud by Bjarne Ljungdal. (In Danish)Grønlands Stenklub 2004. ISBN: 87-990597-0-3 |