Geologi, Karakteristik Alterasi Hidrotermal dan Mineralisasi Bijih pada Pit Purnama Martabe, Kabupaten Tapanuli Selatan, Provinsi Sumatera Utara: Geology, Hydrothermal Alteration Characteristics and Ore Mineralization in Purnama Martabe Pit, Tapanuli Selatan District, North Sumatra Province. PROMINE, [S. l.], v. 9, n. 1, p. 37–44, 2021. DOI: 10.33019/promine.v9i1.2118. Disponível em: https://www.journal.ubb.ac.id/index.php/promine/article/view/2118. Acesso em: 13 apr. 2026.