Preliminary Study of Mining Material Prospects Based on Hydrothermal Alteration Distribution Using Composite and Density Slicing of Landsat 8 Image in Ulubongka Regency, Central Sulawesi. PROMINE [Internet]. 2020 Jul. 13 [cited 2026 Apr. 13];8(1):1-7. Available from: https://journal.ubb.ac.id/index.php/promine/article/view/1799