JAMALUDDIN; OSCAR, A. W.; MANIK, N.; UMAR, E. P. Analisis Komposisi Mineral Lempung dan Maturitas Material Organik Daerah Balikpapan Selatan, Kota Balikpapan, Kalimantan Timur. OPHIOLITE: Jurnal Geologi Terapan, [S. l.], v. 7, n. 3, p. 123–132, 2025. DOI: 10.56099/ophi.v7i3.p123-132. Disponível em: https://ophiolite.uho.ac.id/index.php/journal/article/view/94. Acesso em: 30 oct. 2026.