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Bakri, Hasbi
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Pembuatan Blok Model Estimasi Sumberdaya Nikel Laterit Dengan Metode Inverse Distance di Wilayah Blok “X” Pada PT. Vale Indonesia Tbk Burhanudin, Burhanudin; Rauf Husain, Jamal; Bakri, Hasbi
Jurnal of Mining Insight Vol 1 No 1 (2023): Journal of Mining insight
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jmi.v1i1.41

Abstract

Block model is an attempt to produce estimates of mineral deposition wich is used as a reference for the mining process. The research objective to provide volume and tonnage estimation. The research method using conventional methods Inverse Dictance, needed the data among which the assay data, the data collar, geological data, and survey data. Research carried out by the number of drill point as much as 275 points and a drill spacing of 50 meters and 25 meters generate the amount of resources that have been calculated in the block model in the amount of resources that the limonite layer of 1,210,938 tonnes with the average levels of Ni: 0.8%, Co: 0.08%, Fe: 42.3%, SiO2: 7.8% and MgO: 1.21%. And for saprolite tonnage of 445,090 tonnes with the average levels of Ni: 1.91%,Co:0.18%, Fe: 32.78%, SiO2: 25% and MgO: 7.08%.
Analisis Karakterisitik Geokimia Batugamping Menggunakan Metode X-Ray Difraction dan X-Ray Fluorescence di Kabupaten Buton Selatan Sulawesi Tenggara ramadhan shaddad, Aqsal; Bakri, Hasbi
Jurnal of Mining Insight Vol 1 No 3 (2023): Journal of Mining Insight
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jmi.v1i3.213

Abstract

Limestone is a sedimentary rock formed from calcium carbonate deposits and has a high content of calcium carbonate. It is used in the cement, fertilizer, glass, and construction industries. Research was conducted in the South Buton Regency, Southeast Sulawesi, using the geochimical methods of X-Ray Diffraction (XRD) and X-Ray Fluorescence (XRF). The aim of this study was to identify the minerals in limestone and analyze their geochemical characteristics. The research results showed the dominance of calcite minerals in the limestone of the area, with a high content of pure calcium carbonate (CaCO3). The study also observed the presence of other elements in the limestone. The analysis indicated low levels of elements such as Mg, CaF2, Ru2O, Fe2O3, Ag2O, and SrO. The XRD method was useful for mineral identification in limestone, while XRF analyzed the elemental content quantitatively. This research provides a deeper understanding of the mineral characteristics and composition of limestone in the South Buton Regency. This information is valuable for the development of the cement, fertilizer, glass, and construction industries. Additionally, the study also revealed the potential for other minerals in the limestone of the research area.
Analisis Pengolahan Emas Menggunakan Sistem Hidraulik Mekanik di Daerah Rarowatu Kabupaten Bombana Provinsi Sulawesi Tenggara Bakri, Hasbi; Anshariah; Asri, Al
Jurnal of Mining Insight Vol 1 No 4 (2023): Journal of Mining Insight
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jmi.v1i4.256

Abstract

Each processing using hydraulic system produces waste, tailing, containing gold. This research aimed to find out the cause of the losing and to find out the appropriate hydraulic system. It was conducted by taking data on the slope of the sluice box, the speed of materials flow, processed materials, and production results per day. The obtained data were then analyzed throughout comparing the values in the five research sites. The result indicated that in pit one the slope of sluice box was 150 with the flow speed was 2.05m/s resulted in 0.180 kg gold from 26.3 m3. In pit 2, the slope and the speed were 15o and 2.05 m/s respectively which this resulted in 0.180 kg gold of 26.3 m3. In pit 3, the slope and the speed were 12o and 1.92 m/s which resulted in 0.159 kg gold of 31.2 m3. In pit 4, the slope and the speed were 13o and 1.99 m/s which resulted in 0.148 kg gold of 28.3 m3. In the last pit, the slope and the speed were 15o and 2.01 m/s which resulted in 0.197 kg gold of 32.4 m3. The comparison indicated that the series of the hydraulic system which had ideal working efficiency was the one which had 2 m/s speed flow with the slope of sluice box was 15o. The slope was much better than 13o and 12o. The influencing factors for the loss were the speed of the flow and the slope of the sluice box
Co-Authors Adnan Firdaus Alam Budiman Thamsi Ali Imran Almarabi, Laode Muhammad Imaduddin Amir, Muhamad Karnoha Amirullah, Rusman Andi Fahdli Heriansyah Andi Ilham Samanlangi Anshariah Anshariah, Anshariah Arham Asri, Al Bakri, Suriyanto Burhanudin Burhanudin Chalik, Citra Aulian Djamaludin Djamaludin, Djamaludin Fadli Heriansyah, Andi Firman Nullah Yusuf Hafram, Anshariah Hasrianto, Hasrianto Indradewa, Rhian Kadar, Muhammad Ilham Mochammad Imron Awalludin Nurwaskito, Arif Putri Hamdan, Annisya Raivel, Reivel Ramadhan Shaddad, Aqsal Rauf Husain, Jamal Rusdi, Andi Muhammad Yusuf Sri Widodo Yudha, Wira