Skip to the main content

Rudarsko-geološko-naftni zbornik, Vol. 38 No. 2, 2023.

Original scientific paper

https://doi.org/10.17794/rgn.2023.2.6

PEDOGENESIS OF LATERITIC SOILS AND THE ENRICHMENT OF CRITICAL METALS: A STUDY FROM SOUTHEAST SULAWESI, INDONESIA

Khalil Ibrahim ; Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia
Satria Bijaksana ; Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia
Ulvienin Harlianti ; Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia
Putu Billy Suryanata ; Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia
La Ode Ngkoimani ; Faculty of Earth Sciences and Technology, Universitas Halu Oleo, Kampus Hijau Bumi Tridharma, Kendari 93232, Indonesia
Suryawan Asfar ; Faculty of Earth Sciences and Technology, Universitas Halu Oleo, Kampus Hijau Bumi Tridharma, Kendari 93232, Indonesia
Silvia Jannatul Fajar ; Faculty of Mining and Petroleum Engineering, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia

Full text: english pdf 5.933 Kb

page 87-98

downloads: 283

cite

Abstract

Lateritic soil is a prospective source of metals termed critical or strategic metals due to their use in high-technology industries. Critical metals include rare earth elements (REEs). In this study, two profiles of lateritic outcrops from the Ni-producing area of Southeast Sulawesi in Indonesia were sampled for magnetic susceptibility as well µ-XRF analyses to identify how the concentration of critical metals changed during pedogenesis. The results show that there are three different patterns from the bottom layer up. The first pattern is enrichment experienced by Sc, La, Cr, and Ti. The second pattern is depletion experienced by Ni, Nd, and Ho. The third pattern is the localization of high concentration at a certain depth, as experienced by Co, Ce, and V. The concentration of certain critical metals correlates either positively or negatively with magnetic susceptibility, inferring that magnetic susceptibility might be used as a proxy indicator for critical metal concentration in lateritic soil.

Keywords

critical metals; lateritic soil; pedogenesis; magnetic susceptibility; Southeast Sulawesi

Hrčak ID:

304339

URI

https://hrcak.srce.hr/304339

Publication date:

10.6.2023.

Article data in other languages: croatian

Visits: 1.019 *