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Journal : journal of engineering science and technology applications

Perubahan Formula Harga Patokan Mineral dan Implikasinya terhadap Nilai Ekonomi Mineral Ikutan pada Bijih Nikel : Changes in the Mineral Reference Price Formula and Their Implications for the Economic Value of Associated Minerals in Nickel Ore Mahader; Wd Rizky Awaliah Nafiu; Erwin Anshari
Journal of Engineering Science and Technology Applications Vol. 4 No. 1 (2026): Journal of Engineering Science and Technology Applications
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jesta.v4i1.434

Abstract

This study aims to identify associated elements in nickel ore and estimate their economic value in the stockpile area of PT. Z, South Konawe Regency. A quantitative approach was applied using photogrammetric data, material density, moisture content, X-Ray Fluorescence (XRF) assay results, and benchmark mineral prices for July 2026. The volumes of seven stockpiles (NDJ 1–NDJ 7) were determined through three-dimensional modelling and converted into tonnage using a material density of 1.6 t/m³. The estimated economic value was calculated using the Mineral Reference Price (HPM) formulation stipulated in Ministerial Decree of Energy and Mineral Resources No. 144.K/MB.01/MEM.B/2026 and compared with the formulation under Decree No. 268.K/MB.01/MEM.B/2025. XRF results indicated Ni grades of 1.54%–1.73%, Fe 11.71%–18.41%, Co 0.030%–0.062%, and Cr 0.595%–1.197%. The total stockpile material amounted to 501,192.0 WMT. The estimated economic value based on the 2026 HPM formulation reached USD 38,314,418.4, compared with USD 19,233,221.8 under the 2025 formulation, resulting in an estimated difference of USD 19,081,196.6. The findings indicate that the revised HPM formulation results in a higher estimated economic value of the stockpile material by incorporating qualifying associated elements into mineral valuation.
Co-Authors Abd. Hadid Rahman Ulfa Abubakar Abubakar Ahmad Hidayat Aksara, L.M. Bahtiar Ali Okto Alrum Armid Ambarsari, Ika Sartika Ambarsari, IkaSartika Arif Setiawan Asri Arifin Awaliah Nafiu, Wd Rizky Awaliah Nafiu, Wd. Rizky Awaliah, Wd Rizky Awaliah, Wd. Rizky Dandy Ashari Daniyatno Daniyatno Deniyatno, Deniyatno Firdaus Firdaus Firdaus Firdaus Firdaus Firdaus Fitra Saleh Hardiyanti Hakim Harisma Buburanda, Harisma Harziman Ningrat Hasria Hasria Hasria Hasria Hasria Hasria, Hasria Ika Sartika Ambarsari Ika Sartika Ambarsari Irfan Saputra Isnaen Muhidin, Moh. Ita Juita, Ita Jamhir Safani Jaya, Rio Irhan Mais Cendra Jufri Karim La Ode Nafiu Mahader Marwan Zam Milli Marwan Zamili Marzieh Mokarram Masri Masri Mili, Marwan Zam Mohammad Suriyaidulman Rianse Muh. Imran Tahir Muh. Nuzul Khaq Muhammad Chaerul Muhammad Ichsanul Akbar Natsir Muhammad Ilham Kadar Muhammad Ramdhan Olii Muhammad Taupan Muhammad Yasser Arsy Akbar Muhardi Mustafa Muliddin Nafiu, WD Rizky Awaliah Nento, Sartan Nopri Asharun Oksteming, Jenly Okto, Ali Olii, Muhammad Ramdhan Passaly, Thegar Aditya Rachman, Ranno Marlany Rahman Rahman Rasmita, Riza Restele, La Ode Rezky, Tri Binajaya Rianse, Mohammad Suriyaidulman Ririn Pakaya Ririn Pakaya Riza Rasmita Rizal Adi Saputra Rizky Awaliah N, Wd. Rizky Selly Nazarina Olii Sarfin.L, Wiil Suparwi Suparwi Tri Utomo Taliding Ulfa, Abd. Hadid Rahman Wahab Wahab Wahab Wahab Wd Rizky Awaliah Nafiu Yayat Iman Supriyatna Yayat Iman Supriyatna Zeth Yoseptian Batupadang Zulkifli Zulkifli