Karakteristik Mineraloid Opal Limbong, Kabupaten Luwu Utara, Provinsi Sulawesi Selatan. Jurnal Geomine, [S. l.], v. 8, n. 03, p. 220–227, 2020. DOI: 10.33536/jg.v8i03.1409. Disponível em: https://jurnal.fti.umi.ac.id/index.php/JG/article/view/1409. Acesso em: 27 jun. 2025.