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All Journal Angkasa: Jurnal Ilmiah Bidang Teknologi
Rangga Bintang Ardaraja
Universitas Pembangunan Nasional Veteran Yogyakarta
Computer Science & IT

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Pemodelan Kemenerusan Nikel Laterit Berdasarkan Metode Radial Basis Function (RBF) Di Blok X PT. Stargate Pasific Resources, Sulawesi Tenggara Asep Bukhori; Rangga Bintang Ardaraja; Winarti Winarti; Al Hussein Flowers Rizqi
Angkasa: Jurnal Ilmiah Bidang Teknologi Vol 18, No 2 (2026): Mei
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/angkasa.v18i2.3279

Abstract

The significant nickel laterite deposits can be found in Indonesia, especially in the Sulawesi ophiolite belt, which was created by intricate tectonic processes. The purpose of this study is to use the Radial Basis Function (RBF) method to estimate the continuity of the supergene enrichment zone in Block X of PT. Stargate Pacific Resources, Southeast Sulawesi. Collar, survey, assay, and geological logging data from 118 drill holes make up the dataset, which was included into a three-dimensional (3D) modeling system. Leapfrog software is used for spatial modeling, geological and geochemical interpretation, data compositing, and top-cut analysis.The results show that the laterite profile is made up of limonite, saprolite, and bedrock zones, with nickel enrichment occurring primarily in the saprolite and somewhat in the limonite zone. The Ni grade distribution is heterogeneous with a positively skewed pattern, demonstrating the efficiency of the RBF method in capturing non-linear spatial variability when compared to traditional interpolation techniques. Furthermore, the model shows that the continuity of the supergene enrichment zone is primarily oriented west-northwest, as determined by plateau morphology, whereas thinner laterite profiles are associated with rolling hill areas due to greater erosion
Co-Authors Al Hussein Flowers Rizqi Asep Bukhori Winarti Winarti