Identification of Lateritic Nickel Deposits Potential in the Kokoe Area, Kabaena Island, Central Buton Regency, Southeast Sulawesi Province, Indonesia

Authors

  • Hasria Hasria Department of Geological Engineering, Halu Oleo University, Kendari, Indonesia
  • Moh. Ruliansyah. L Department of Geological Engineering, Halu Oleo University, Kendari, Indonesia
  • Salih M. Awadh Department of Geology, College of Science, University of Baghdad, Baghdad, Iraq
  • Masri Masri Department of Geological Engineering, Halu Oleo University, Kendari, Indonesia
  • Muhammad A. Azzaman Department of Geological Engineering, Halu Oleo University, Kendari, Indonesia
  • Ali Okto Department of Geological Engineering, Halu Oleo University, Kendari, Indonesia
  • Sawaludin Sawaludin Department of Geography, Halu Oleo University, Kendari, Indonesia

DOI:

https://doi.org/10.46717/igj.57.1A.15ms-2024-1-26

Keywords:

Potential; Nickel; Laterite; Exploration; Kabaena

Abstract

The study is situated in the Kokoe Region of Central Buton Regency, Southeast Sulawesi,
specifically in the southern part of Kabaena Island. Its primary objective is to assess the
potential of nickel laterite in the designated area. The research methodology involved
microscopic analysis of bedrock using a polarizing microscope, examining the drilling data,
including logging descriptions, and the utilising of XRF geochemical analysis (Ni, Fe,
Al2O3, Co, Mg, and SiO2) from 32 drilling sites. Both elementary grade and laterite profiles
were visualized using Strater 5 software to simplify the representation of laterite profiles.
Petrographic analysis divided the bedrock into two lithological units: serpentinized
lherzolite and serpentinite. The laterite profiles in the study area were classified into four
types: type A, type B, type C, and type D. Type A profiles consist of bedrock, saprolite, and
limonite layers, covered by clay and colluvium. Type B profiles lack limonite and instead
exhibit saprolitic rock and rocky saprolite layers on top of the bedrock. Type C profiles
comprise bedrock, saprolitic rock, rocky saprolite, limonite, and topsoil layers. Type D
profiles contain three zones, namely bedrock, colluvium, and clay, but lack limonite and
saprolite layers. Among the four profile types, type A and type C profiles show promising
potential due to higher average grades of Ni and thicker saprolite zones compared to the
type B and the type D profiles.

Downloads

Published

2024-01-25

Most read articles by the same author(s)

1 2 3 > >>