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All Journal Jurnal Pertambangan Journal of Geoscience, Engineering, Environment, and Technology Jurnal Geomine Journal Of Chemical Process Engineering (JCPE) Jurnal GEOSAPTA Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Abdi Dosen : Jurnal Pengabdian Pada Masyarakat International Journal of Applied Sciences and Smart Technologies Matriks Teknik Sipil Journal of Geology and Exploration Journal Of Chemical Process Engineering Journal of Engineering Science and Technology Applications
Nurliah Jafar
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Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Physics Public Health Social Sciences

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Karakteristik Endapan Bijih Besi Daerah Pakke Desa Langi Kecamatan Bontocani Kabupaten Bone Provinsi Sulawesi Harwan Baharuddin; Irzal Nur; Adi Maulana; Nurliah Jafar; Firdaus F; Andi Fahdli Heriansyah
Jurnal Geomine Vol 8, No 3 (2020): Edisi Desember 2020
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v8i3.631

Abstract

Bijih besi di daerah Pakke ditemukan berupa bongkah-bongkah bijih besi magnetit dan hematit yang berasosiasi dengan intrusi granodiorit dan pegmatit granodiorit (Utoyo, 2008). Penelitian ini bertujuan untuk mengetahui kondisi geologi, jenis batuan dan mineral pembawa bijih besi, serta karakteristik endapan bijih besi daerah penelitian. Tahapan pengambilan data berupa Pengamatan Singkapan. Pengambilan sampel litologi, menggunakan metode Rock Sampling. Metode analisis yang digunakan untuk menentukan karakatersitik endapan bijih besi yaitu analisis petrografi untuk mengetahui jenis litologi, analisis mineragrafi untuk mengetahui mineral pembawa bijih dan analisis XRD (X-Ray Diffraction) untuk mengetahui mineral alterasi dan mineral bijih. Berdasarkan tipe alterasi dan mineralisasi diketahui bahwa tipe endapan bijih besi pada daerah penelitian yaitu endapan skarn. Dimana endapan skarn ini terbentuk proses metamorfisme kontak yang bertemperatur tinggi. Magma yang kaya akan silika menginstrusi batuan sedimen yang kaya akan karbonat seperti batugamping. Jenis batuan pada daerah penelitian yaitu batuan beku berupa basal yang diindikasikan sebagai source rock dan batuan karbonat berupa wackstone yang diindikasikan sebagai host rock atau batuan penyimpan bijih besi dimana mineral pembawa bijih besi yaitu magnetit, hematit dan goetit.
ANALISIS UNSUR ENDAPAN BAUKSIT MENGGUNAKAN X-RAY FLUORESCENCE (XRF) PT. ANTAM TBK. UNIT GEOMIN DAERAH KENCO KABUPATEN LANDAK PROVINSI KALIMANTAN BARAT Nurliah Jafar
Journal of Chemical Process Engineering Vol 2, No 1 (2017): April 2017
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.116 KB) | DOI: 10.33536/jcpe.v2i1.115

Abstract

Bauksit terbentuk dari batuan yang mempunyai kadar aluminium (Al) nisbi tinggi, kadar besi (Fe) rendah dan tidak atau sedikit mengandung kuarsa (SiO 2 ). Bentuknya menyerupai tanah liat/cellular dan kadang-kadang berstruktur pisolitik. Secara makroskopis bauksit berbentuk amorf, kekerasan bauksit berkisar antara 1-3 Skala Mohs dan berat jenis berkisar antara 2,5-2,6. Bauksit merupakan bahan heterogen yang mempunyai mineral dengan susunan terutama dari oksida aluminium, yaitu berupa mineral gibbsite (Al 2 O 3 .3H 2 O), mineral boehmit (Al 2 O.3H 2 O), mineral diaspor (Al 2 O 3 .3H 2 O). Secara umum bauksit layak tambang mengandung Al 2 O 3 sebanyak 45-65%, SiO 2 1-12%, Fe 2 O 3 2-25%, TiO 2 3%, dan H 2 O 14-36%. Persentase unsur bauksit akan menentukan langkah selanjutnya seperti perhitungan cadangan dan perancangan metode penambangan. Kandungan bauksit pada daerah penelitian adalah aluminium (Al 2 O 3 ), besi (Fe 2 O 3 ), silika (SiO 2 ) dan titanium (TiO 2 ).
ANALISIS KESTABILAN LERENG DISPOSAL IPD PQRT PIT WEST MENGGUNAKAN METODE BISHOP PT BUMA JOB SITE LATI KABUPATEN BERAU KALIMANTAN TIMUR Sri Wahyuni; Nurliah Jafar; Habibie Anwar; Abd. Salam Munir
Geosapta Vol 7, No 1 (2021): Januari 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jg.v7i1.7702

Abstract

Disposal merupakan tempat pembuangan material yang berada di dalam tambang maupun di luar area penambangan atau biasa disebut IPD (in pit dump) dan OPD (out pit dump). Tujuan penelitian ini untuk mengetahui kestabilan lereng dari segi keamanan. Adanya perubahan dari geometri lereng ini dapat mengurangi masalah yang mungkin akan terjadi, yang dapat menyebabkan lereng mengalami pergerakan. Untuk menganalisis dan pengolahan data menggunakan software Rocscience slide dengan metode bishop. Berdasarkan analisis yang dilakukan pada disposal PQRT Pit West diperoleh empat sayatan, lereng aktual sayatan A sampai D mendapatkan hasil FK > 1,3. Selanjutnya untuk perencanaan penutupan lumpur pada area kaki disposal sayatan A sampai D didapatkan FK < 1,3 dimana geometri yang digunakan yaitu standar dari perusahaan dengan tinggi jenjang tunggal 10 meter, dengan slope 450 untuk single slope dan lebar jenjang tunggal 30 meter. Hasil ini, maka perlu dilakukan upaya penanggulangan untuk mencegah terjadinya gangguan kestabilan lereng disposal seperti merancang ulang geometri lereng, maka didapatkan geometri yang sesuai dimana FK > 1,3 lereng dinyatakan stabil atau aman, yaitu lebar jenjang 50 sampai 100 meter dengan tinggi lereng keseluruhan 44 meter, sudut keseluruhan lereng 70, sesuai dengan SOP (Standar Operasional Perusahaan) apabila faktor keamanan lereng timbunan dengan tinggi lereng < 100 meter, maka minimum FK yaitu 1,3. Kata kunci: disposal, kestabilan lereng, faktor keamanan, sayatan
EVALUASI GEOMETRI JALAN ANGKUT TAMBANG PADA PT. MANAKARRA MULTI MINING PROVINSI SULAWESI BARAT Habibie Anwar; Nurliah Jafar; Alam Budiman Thamsi; Muhammad Idham Farid
Matriks Teknik Sipil Vol 9, No 1 (2021): Maret
Publisher : Program Studi Teknik Sipil FT UNS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mateksi.v9i1.47323

Abstract

Jalan tambang yang baik adalah ketika memiliki bentuk geometri jalan yang sesuai standar yang ditetapkan oleh perusahaan. Tujuan dari penelitian ini adalah untuk mengetahui kondisi geometri jalan hauling di PT Manakarra Multi Maning, apakah telah sesuai standar atau belum. Tahapan pengambilan data geometri jalan dimulai dengan pengukuran dimensi jalan menggunakan GPS dan kompas. Tahap  selanjutnya adalah mengolah data dari alat survey tersebut menggunakan software untuk mengetahui nilai dimensi dari jalan tambang sesuai standar AASHTO. Berdasarkan hasil dari perhitungan penelitian ini dapat disimpulkan lebar jalan angkut pada jalan lurus di semua stasiun yaitu 12 meter sampai 13 meter, dan telah memenuhi standar minimum yang ditetapkan yaitu 9 meter. Lebar jalan pada tikungan berdasarkan dari hasil perhitungan untuk lebar jalan pada tikungan di setiap stasiun yaitu 12 meter sampai 14 meter, dan telah jalan memenuhi standar minimum yang ditetapkan yaitu 12 meter. Superelevasi jalan aktual tidak memenuhi standar yaitu 1,3% dan 9%, sedangkan standar yang ditetapkan untuk superelevasi minimum 4% dan superelevasi maksimum 8%. Kemiringan jalan aktual yang tidak memenuhi standar maksimum 10%, dimana kemiringan jalan aktual yang ada di lapangan relatif tinggi yaitu 11% hingga 15%.
Effect of Leaching Time on Dissolution of Gold Metal (Au) in Gold Ore Deposits by Hydrometallurgical Process Nurliah Jafar; Sitti Ratmi Nurhawaisyah; Firdaus F; Muhammad Idris Juradi; Andi Artiningsih; Mubdiana Arifin; Suriyanto Bakri
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.v10i2.1144

Abstract

One of Indonesia’s potential gold ore deposits is found in the Bolaang Mongondow area of North Sulawesi Province. This research is one of the initial studies conducted to determine the metal content of gold in ore deposits based on the results of Au extraction using aqua regia. It is known that several operating parameters determine the success rate of the leaching process. One of these parameters is the leaching time. The leaching time ranges used in the study were 5, 10, 20, 60, and 120 minutes. Based on the variation of the leaching time applied to the leaching process, it will also be known how much mass of dissolved Au metal is. The leached filtrate obtained was then analyzed for its concentration using AAS (Atomic Absorption Spectrometry) instrument. The AAS data were then processed using x and y curves to obtain the optimum leaching time, and the mass of dissolved Au metal was obtained using the equation. The results showed that the optimal time for the hydrometallurgical process in gold ore deposits was 120 minutes with an Au concentration of 1.67 mg/L.   
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%.
Classification of Ni Levels for Determination Cut-Off Grade in Region X Nurliah Jafar; Hendra Wahid; Sri Widodo
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 (505.217 KB) | DOI: 10.58227/jge.v1i1.3

Abstract

The need for ore with levels above 1.8% presents the author's initiative to conduct research to produce ore products with the required levels. The aim is to find out the lowest grade of ore that can be mined and used as a cut-off grade in area x. The research method used is the blending method. Some of the data needed include the drill point coordinates, the borehole's depth, the borehole, the slope of the borehole, lithology, and the value of Ni content. The distribution of nickel in the x region is dominated by ore which has a grade of 1 to 2% with a total volume of 140,100 Bcm, and there is a small amount of nickel that has a rate above 2% with an importance of 15,650 Bcm. The mining sequence has been divided into three to three stages, where the tonnage obtained from each location is 8,9937 tons, 442361 tons, and 100,554 tons. The simulation of blending steps was carried out starting from the classification of nickel with the highest grade, namely nickel with the lowest rate of 1.8% with an average rise of 2.07%, to the last stage, which produces a middle grade of 1.9%, namely in the classification of nickel with rates above 1.6 %. From the results of the blending simulation that has been carried out, it can be concluded that the lowest grade that can be used as a cut-off grade in area x is ore with a Ni content of 1.6%.
Comparative Analysis of Mined Reserve Tonnage on "M" Hill Between Mine Plan and Mining Realization Djamaluddin Djamaluddin; Mulhadramy Mulhadramy; Nurliah Jafar
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 (677.487 KB) | DOI: 10.58227/jge.v1i1.6

Abstract

In mining activities, there is often a discrepancy between the plan and actual conditions in the field; if not identified early, this discrepancy will undoubtedly have the potential to cause losses if it continues to repeat itself. This study aimed to determine the factors driving the difference between the mine plan and mining realization. This research uses Pit design data, mine progress measurement data, material movement data, and two mine plan data, namely the backup plan model resulting from detailed exploration and the backup plan model data from the input drill results. From the results of the mine plan research, the closest to realization is the plan using input drill data with an average material movement difference of 10% and the difference in mined ore reserves an average of 12%. In comparison, detailed exploration data with an intermediate material movement difference of 12% to 42% and the contrast in mined ore reserves is 52% on average. The presence of overcuts influences this and the use of different densities.
Alteration and Mineralization in the Coppo Village, Barru District, South Sulawesi Province Muhamad Hardin Wakila; Nurliah Jafar; Agung Fiqriansyah
Journal of Geology and Exploration Vol. 2 No. 1 (2023): Journal of Geology and Exploration, June 2023
Publisher : CV Insight Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58227/jge.v2i1.50

Abstract

Hydrothermal alteration can be used to interpret and identify undiscovered mineralization, and can lead to the discovery of such mineralization. In the research area, it was found that there were outcrops that were altered with the physical characteristics of weathered outcrops. The research location is in the Camba Formation of Volcano Rock Members, and there are indications of sulfide mineralization, megascopically this study took 3 (three) alteration samples, selected based on the differences in color and texture of the rocks found. Samples we reanalyzed to determine alteration mineral assemblages using petrographic and XRD analysis methods, then to determine the type of alteration in sulfide deposits in the study area using the classification by Corbett and Leach, 1996. The results of the petrographic analysis showed that sample 1 consisted of chlorite, epidote, quartz and mineral assemblages. opaque minerals, sample 2 consists of plagioclase minerals, kfeldspar, clay minerals and quartz, sample 3 consists of epidote minerals, calcite and opaque minerals. The results of the XRD analysis showed that sample 1 consisted of the minerals quartz, chlorite, epidote and pyrite, sample 2 consisted of the minerals kaolinite, illite and pyrite, sample 3 consisted of the minerals quartz, chlorite, dolomite, epidote and auricuprite. The results of the analysis of alteration minerals assemblages were classified using Corbett and Leach, 1996 and it was found that the types of alteration in the research area were propylitic and argillic alteration types.
Pelatihan Pemetaan Topografi Menggunakan Waterpas dan Teodolit bagi Siswa SMK Budi Bangsa Luwu Utara Provinsi Sulawesi Selatan Agus Ardianto Budiman; Nurliah Jafar; Firdaus Firdaus; Abdul Salam Munir; Rahayu Achmad
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 6 No 1 (2023): Kesadaran Teknologi untuk Mengatasi Permasalahan Kemasyarakatan
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v6i1.387

Abstract

To ensure the quality of education in vocational schools (Sekolah Menengah Kejuruan or SMK), the government intervenes through the Skills Competency Test (Uji Kompetensi Keahlian or UKK). During the UKK process for SMK Budi Bangsa students in March 2018, it was found that the participants generally had not yet mastered the material to be tested, specifically the use of topographic mapping equipment. This is likely due to the insufficient availability of adequate facilities and infrastructure at SMK Budi Bangsa. Therefore, training on the use of topographic mapping equipment is necessary to better prepare SMK Budi Bangsa students for a similar exam the following year. The topographic mapping training, using auto level and theodolite tools, aims to enhance students' knowledge and skills in accordance with the equipment usage guidelines and refer to the Code 1556 Vocational Practice Exam Assessment Sheet. The topographic mapping training was conducted at SMK Budi Bangsa from January 29 to February 4, 2019. The method used involved theoretical presentations on topographic mapping in general and the specific use of auto level and theodolite tools, as well as practical exercises on the usage of these tools, measurement and data processing, and the creation of topographic maps. The training activities were attended by 27 students, consisting of 14 students from class X, 3 students from class XI, and 10 students from class XII. From only 7.4% of the participants who initially possessed the knowledge and skills according to the first two stages of the reference before the training, they achieved improvement, with all participants acquiring the knowledge and skills according to all stages of the planned reference.
Co-Authors Abdul Salam Munir Abdullah Kilian Adi Maulana Agung Fiqriansyah Agus A Budiman Agus Ardianto Budiman Alam Budiman Thamsi Alfian Nawir Andi Artiningsih Andi Fadli Heriansyah Andi Fahdli Heriansyah Ansariah Ansariah Anshariah Anshariah Anshariah, Anshariah Antonina Pri Martireni Arifin, Mubdiana Bakri, Hasbi Bakri, Suriyanto Citra Aulian Chalik Dewy Kumala Tehuayo Djamaluddin Djamaluddin F. Firdaus Firdaus F Firman Firman Firman Nullah Yusuf Habibie Anwar Habiebie Anwar Harwan Harwan Hasbi Bakri Hendra Wahid Idris Juradi, Muhammad Iis Nursari Irzal Nur, Irzal Jamil Jumadra Jihan Fitri Ramdita Putri Gouw Moh. Salman Said Mohammad salman said Muh. Ajwad Muhammad Idham Farid Mulhadramy Mulhadramy Muliadi Muliadi Mustafiah Nijushiho Manik Nur Asmiani Nurhawaisyah, Sitti Ratmi Prasetyawati Umar, Emi Rahayu Achmad Rizky Nurul Aulia Sitti Ratmi Nurhawaisyah Sitti Riatmi Nurhawaisyah Sri Wahyuni Sri Widodo Sri Widodo Sri Widodo Sukardin, Sukardin Wakila, Muhammad Hardin