Cover. Jurnal Geologi Pertambangan (JGP), [S. l.], v. 25, n. 2, 2019. DOI: 10.53640/jgp.v25i2.714. Disponível em: https://ejurnal.unikarta.ac.id/index.php/jgp/article/view/714. Acesso em: 25 agu. 2025.