Andini, Delita, Guskarnali Guskarnali, and Alfitri Rosita. 2019. “Study of Rare Earth Elements (REE) in Ex Tin Mining and Kaoline Mining in Merawang District, Bangka Regency)”. PROMINE 7 (1), 28-33. https://doi.org/10.33019/promine.v7i1.1058.