Licursi, Ernesto Adler, et al. “Mineralogical Characterization of Pegmatites With Occurrences of Halloysite in the Regions of Porciúncula (RJ) and Patrocínio Do Muriaé (MG), Southeastern Brazil”. Anuário Do Instituto De Geociências, vol. 46, Apr. 2023, doi:10.11137/1982-3908_2023_46_52487.