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All Journal JURNAL PERTAMBANGAN Jurnal Geomine Jurnal GEOSAPTA Journal of Geology and Exploration Journal of Mining Insight
Bakri, Hasbi
Jurusan Teknik Pertambangan, Universitas Muslim Indonesia, Makassar
Earth & Planetary Sciences Energy Engineering Environmental Science

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PENINGKATAN KADAR BIJIH BESI BATUBESSI KEC. BARRU KAB. BARRU DENGAN METODE PEMISAHAN MAGNETIK Muhammad Idris Juradi; Hasbi Bakri; Firman Nullah Yusuf; Sitti Ratmi Nurhawaisyah; Suriyanto Bakri; Muh. Hardin Wakila
Geosapta Vol 7, No 2 (2021): Juli 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v7i2.9460

Abstract

Indonesia memiliki potensi endapan bijih besi yang besar, namun hal ini tidak diimbangi dengan instrument yang memadai, sehingga Negara Indonesia harus mengimpor instrument yang dibutuhkan, instumen yang  dipakai memiliki sistem yang cukup sederhana dan bisa dikembangkan oleh sumber daya manusia yang dimiliki  Negara  Indonesia.  Salah satu alat yang  digunakan  dalam proses pemisahan mineral berharga dengan pengotornya  berdasarkan  sifat  kemagnetan yaitu Magnetic separator. Penelitian ini bertujuan untuk mempelajari karakteristik bijih Besi di Desa Batubessi serta mempelajari pengaruh ukuran partikel terhadap peningkatan kadar dan recovery besi pada proses pemisahan magnetik. Metodologi penelitian yang dilakukan adalah metode induktif yang menggunakan pendekatan kombinasi antara penelitian kualitatif dan kuantitatif, dengan memadukan hasil-hasil kajian pustaka, data lapangan, serta hasil-hasil penelitian laboratorium yang keseluruhannya dikaji, dianalisis, dan disintesis secara komprehensif untuk menyimpulkan rangkaian penelitian yang telah dilakukan. Hasill karakteristik bijih besi asal daerah Batubessi Kabupaten Barru Sulawesi Selatan berdasarkan hasil analisis XRD dan XRF mengandung mineral quartz (SiO2), goethite (FeO(OH)) magnetite (Fe3O4) dan braunite (Mn7SiO12). Berdasarkan komposisi kimia dimana mineral goethite (FeO(OH)) dan magnetite (Fe3O4) merupakan mineral pembawah unsur besi. Dengan komposisi unsur Fe2O3 73,863%, SiO2 21,539%, SO3 4,104%, CaO 0,219%, MnO 0,211% dan CuO 0,043%. Hasil pemisahan magnetik menunjukan peningkatan kadar Fe2O3untuk masing-masing fraksi ukuran. Kadar Fe2O3 pada fraksi 100 mesh sebanyak 83,656% dengan nilai recovery 70,220%, kadar Fe2O3 pada fraksi 150 mesh sebanyak 85,429% dengan nilai recovery 76,890% dan kadar Fe2O3 pada fraksi 200 mesh sebanyak 83,291% dengan nilai recovery 80,514%. Secara keseluruhan semua fraksi ukuran mengalami peningkatan kadar Fe2O3sebanyak ±10%.
Studi Mineralogi Batuan Basal Sebagai Source-rock Bijih Besi Daerah Bontocani Kabupaten Bone, Sulawesi Selatan Hasbi Bakri; Anshariah Anshariah; Firdaus F; Arif Nurwaskito; Alam Budiman Thamsi; Habibie Anwar; Emi Prasetyawati Umar
Jurnal Geomine Vol 10, No 2 (2022): Edisi Agustus 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i2.1374

Abstract

Research has been carried out regarding the source rock of iron ore deposits. This area became the object of research because of the discovery of iron ore deposits and several other metals. In this research, the focus of the study is the source rock that carries Fe metal. The results of the initial study indicate that the basalt is thought to have carried the metal intruding the wall rock causing a reaction to occur. The analysis in this paper consists of field research, sampling, preparation, and analysis of petrography and XRD. Based on petrographic observations, basalt is composed of the main minerals in the form of pyroxene minerals, plagioclase, and base mass with a distinctive texture in the form of a porphyry texture where pyroxene and plagioclase minerals as phenocrysts are embedded in the base mass and opaque minerals. The secondary minerals found were epidote, actinolite, hornblende, anatase, staurolite, carbonate minerals, chlorite, sericite, magnesite, clay minerals, and quartz. The ore minerals are magnetite, goethite, chamosite, and pyrope.
Penentuan Arah Pergerakan Lindi Dengan Metode Geolistrik Pada Tempat Pembuangan Akhir (TPA) Sampah Daerah Maiwa, Kecamatan Maiwa, Kabupaten Enrekang, Sulawesi Selatan Fauzi Arifin; Haerany Sirajudin; Hasbi Bakri
Jurnal Geomine Vol 10, No 3 (2022): Edisi Desember 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i3.1189

Abstract

One of the important aspects in urban solid waste management is the problem of leachate which if it is not managed properly will cause a serious threat to the environment, because leachate production will enter underground water streams and also surface water. Leachate is a liquid that flows or 'dissolves' from landfills, with a composition that varies depending on the age of the landfill and the type of waste contained in it. This leachate usually contains dissolved bacteria or and insoluble bacteria. The study site is composed of clastic sedimentary rocks in the form of sandstones and conglomerates, which are included in the Miocene Pliocene Sand (Tmps) tertiary rock formations and the Miocene Conglomerate Tertiary (Tmc). The results of previous studies found that the area where the waste landfill is located on coarse to fine-grained rocks, which is very likely that the flow of leachate contained in the waste landfill location will affect the quality of the water system around the waste landfill location. From the results of this study, it can be known the direction of leachate flow by the geoelectric method and the extent of its effect on the groundwater system in the area around the landfill
Karakterisasi Batubara Formasi Walanae Daerah Kaloling Kabupaten Sinjai Propinsi Sulawesi Selatan Anshariah Anshariah; Emi Prasetyawati Umar; Agus Ardianto Budiman; Hasbi Bakri; Alam Budiman Thamsi; Nurliah Jafar; Alfian Nawir; Andi Fadli Heriansyah; Muhamad Hardin Wakila; F Firdaus; Harwan Harwan
Jurnal Geomine Vol 10, No 3 (2022): Edisi Desember 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i3.1250

Abstract

Coal is a unique sedimentary rock, both in the process of formation and rock characteristics which are strongly influenced by the conditions of the depositional environment. Different depositional environments, the characteristics of the coal are different. The research method used in this research in the field is in the form of direct sampling in the field using the channel sampling ply by ply method, namely sampling by making channels on coal outcrops and taking samples that represent the lower, middle and upper layers of the coal seam to determine the average characteristics. The sample is then prepared to get a certain size and can be representative of the field sample. The prepared samples were then subjected to a proximate test to determine the moisture content, ash content, volatile matter and fixed carbon. Laboratory tests are carried out in the Lab. Analysis and Processing Hasanuddin University Makassar. The results of the proximate analysis  carried out show the coal characteristics of the Walanae Formation in the Kaloling Region which has a moisture content value that decreases from bottom to top with an average of 7.49%; coal ash content increased from bottom to top with an average value of 47.63% ash content; the value of volatile matter decreased from bottom to top with an average of 26.56% of volatile matter; and the value of fixed carbon which increases with increasing depth with an average value of 18.29%.
Structure Control of Iron Ore Education on Sebuku Island Jamal Rauf Husain; Normansyah Normansyah; Hasbi Bakri
Journal of Geology and Exploration Vol. 1 No. 1 (2022): Journal of Geology and Exploration, June 2022
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1468.538 KB) | DOI: 10.58227/jge.v1i1.2

Abstract

Sebuku is occupied by serpentinized ultramafic (peridotite) rocks, gabbro, and chert which are ophiolite series formed in the oceanic crust, in the middle occupied by tuff and claystones. The purpose of this study was to determine the distribution pattern of iron ore deposits. The research area illustrates that the distribution of Fe elements with high levels of >48% is concentrated in the northeast-southwest part, while Fe elements with levels of <48% are concentrated in the southwest-northwest part of the west. Based on the topographic classification of the research area. The pattern of mineralization follows the structural pattern that occurs, where the lateralization of the source rock is intensive in the crushing zone around the structure that forms the main structure and minor structure. This destruction zone serves as an effective water infiltration medium to accelerate the washing process which forms supergene enrichment zones. The pattern of distribution of mineralization is relatively Northeast-Southwest which in some places is characterized by the straightness of the ridge or morphology with more contrasting and prominent zones on the lidar mosaic map.
Calculation of PIT 4 Coal Reserves with Cross-Cross Method Shabiruddin Shabiruddin; Anshariah Anshariah; Hasbi Bakri
Journal of Geology and Exploration Vol. 1 No. 1 (2022): Journal of Geology and Exploration, June 2022
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (253.064 KB) | DOI: 10.58227/jge.v1i1.4

Abstract

Calculating coal reserves using the vertical section method can describe the condition of deposits and overburden in each section. This study aimed to determine the direction of coal distribution, the volume of overburden, and the volume of coal using the cross-section method and to obtain the stripping ratio (SR). In this research activity, data is needed in the form of documentation on pit 4, cross-section, drill logs, and coordinates of drill points. After all the data has been collected, it is continued by making a cross-section in the form of a horizontal (cross-section) using Auto Cad software. The final stage of the interpretation of the two data results is calculating the number of coal reserves, the amount of overburden (OB), and the stripping ratio value by the concept of continuity that has been carried out from the existing data.
Identifikasi Sebaran Nikel Laterit Berdasarkan Hasil Drilling pada Blok X di Pt Halim Pratama Kabupaten Halmahera Selatan Provinsi Maluku Utara Heriansyah, Andi Fahdli; Bakri, Hasbi; D. Basry, Muhammad Daffa; Aldiyansyah, Aldiyansyah
Jurnal of Mining Insight Vol 3 No 4 (2025): Journal of Mining Insight
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jmi.v3i4.308

Abstract

PT Halim Pratama merupakan salah satu perusahaan yang bertempat di Kecamatan Obi Kabupaten Halmahera Selatan Provinsi Maluku Utara yang bergelut serta bergerak dalam proses eksplorasi nikel laterit yang memiliki sebaran nikel laterit yang cukup luas. Berdasarkan hal tersebut, maka penulis tertarik untuk melakukan penelitian tentang bagaimana Mengidentifikasi Sebaran Endapan Nikel Laterit Berdasarkan Hasil Drilling pada blok X di PT Halim Pratama. Penelitian ini Mengetahui penyebaran endapan nikel laterit pada daerah blok X PT Halim Pratama menggunakan data hasil pengeboran. Menentukan ketebalan endapan nikel laterit area blok X PT Halim Pratama menggunakan data hasil pengeboran. Metodologi Penelitian didasari dengan menggunakan Software ArcGis dan Excel untuk menganalisis data bor, data assay, data topografi, data colar dari hasil penelitian. Titik - titik lubang bor pada area penelitian, dengan mengambil 31 titik bor. Jarak untuk setiap lubang bor bervariasi 200 m, 100 m dan 50 m dimana titik – titik bor ini akan menjadi acuan dalam menentukan penyebaran nikel laterit. Dan langsung dibuat korelasi data bor menggunakan aplikasi Surpac, untuk melihat kedalaman dan keterdapatan nikel laterit. Hasil dari penilitian keseluruhan Keterdapatan endapan nikel lateri pada zona saprolit pada daerah lokasi penilitian berdasarkan hasil pengeboran berada pada kedalaman 5-7 meter. Kedalaman endapan nikel laterit pada zona saprolit pada daerah penilitian berdasarkan hasil pengeboran rata rata kedalaman 4-5 meter. Arah sebaran endapan nikel laterit pada zona saprolit yaitu kearah timur-timur laut.
Characteristics of Epithermal Mineralization in Block Jalur 7 Bolaang Mongondow Regency, North Sulawesi Firdaus F; Niciawati Dg Malureng; Hasbi Bakri; Muhamad Hardin Wakila; Anshariah Anshariah; Rizky Nurul Aulia
Journal of Geology and Exploration Vol. 4 No. 2 (2025): Journal of Geology and Exploration, December 2025
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v4i2.250

Abstract

Indonesia has the potential as an area containing large reserves of gold and sulfide minerals. One of the areas with the potential to produce gold is Bolaang Mongondow Regency, North Sulawesi Province. This study aims to identify the characteristics of epithermal deposition mineralization, including texture and the presence of mineralization, to determine its paragenesis. The analysis methods used are petrography, mineralogy, and X-ray Diffraction (XRD). As many as six samples in the test well are described megascopically and polarization microscopically, which have been ground into clay-sized fractions and analyzed using the X-ray Diffraction (XRD) method to detect clay minerals and other altered mineral associations. The quartz texture present at the research location based on megascopic observations is generally dominated by saccharoidal, vuggy, mold, banded, and chalcedonic textures. The identified minerals are generally dominated by base metal minerals, with paragenesis in sequence being pyrite, chalcopyrite, galena, hematite, ilmenite, and geothite. Alterations in the research area are in the form of Argillic, Silicic, Silica-Carbonate, and propylitic zones. The study's results concluded that the type of mineralization in Bolaang Mongondow Regency, North Sulawesi, is of the low-sulfidation epithermal type.
Co-Authors Abdul Salam Munir Agus Ardianto Budiman Alam Budiman Thamsi Aldiyansyah, Aldiyansyah Alfian Nawir Alfian Nawir Alfian Nawir Andi Fadli Heriansyah Andi Fahdli Heriansyah Anshariah Anshariah Anshariah Anshariah Anshariah Anshariah Arif Nur Warkito Arif Nurwaskito Arifin, Mubdiana Bakri, Suriyanto Citra Aulian Chalik D. Basry, Muhammad Daffa Dirgahayu Lantara Fauzi Arifin Firdaus F Firman Nullah Yusuf Habibie Anwar Haerany Sirajudin Harwan Harwan Idris Juradi, Muhammad Irzal Nur, Irzal Jamal Rauf Husain Miftah Farid Moh Salman Said Muhammad Aswadi Nasrullah Nasrullah Niciawati Dg Malureng Normansyah Normansyah Nur Asmiani Nurhawaisyah, Sitti Ratmi Nurliah Jafar Prasetyawati Umar, Emi Rizky Nurul Aulia Shabiruddin Shabiruddin Tri Andriyani Kandora Wakila, Muhammad Hardin Zulkifli Zulkifli