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Jurnal Geomine
Published by Universitas Muslim Indonesia
ISSN : 24432083     EISSN : 25412116     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Jurnal Geomine (JG) merupakan jurnal yang memuat artikel-artikel ilmiah yang mengkaji ilmu-ilmu dan pengembangan dalam bidang pertambangan, geologi dan geofisika. Jurnal Geomine (JG) memiliki No.ISSN : 2443-2083 (Cetak) dan No.ISSN : 2541-2116 (Online). Jurnal Geomine diterbitkan oleh Prodi Jurusan Teknik Pertambangan Fakultas Teknologi Industri Universitas Muslim Indonesia. Terbit 3 (tiga) kali dalam setahun pada Bulan April, Agustus dan Desember.
Arjuna Subject : -
Articles 230 Documents
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Identifikasi Sebaran Batugamping Menggunakan Data Citra Landsat 8 Di Pulau Buton Bagian Selatan Andi Fahdli Heriyansyah; Citra Aulian Chalik; Muhamad Hardin Wakila; Harwan Harwan; Jamal Rauf Husain; Firdaus F
Jurnal Geomine Vol 10, No 1 (2022): Edisi April 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i4.985

Abstract

Indonesia memiliki potensi bahan galian industri cukup besar dan tersebar hampir di seluruh wilayah Indonesia. Pulau Buton yang terletak di salah satu lengan Sulawesi bagian tenggara adalah salah satu wilayah Indonesia yang memiliki potensi batugamping cukup besar, batugamping terumbu tersebut telah mengalami proses geologi hingga terangkat 700 m ke permukaan. Tujuan penelitian ini adalah untuk mengidentifikasi sebaran batugamping dengan menggunakan data Citra Landsat 8 OLI (Operational Land Imager). Penelitian ini dilakukan dengan mengolah data Citra Landsat 8 kemudian dianalisis dan dilakukan beberapa metode interpretasi sehingga sebaran batugamping dapat teridentifikasi dengan baik. Metode interpretasi yang digunakan pada Citra Landsat 8 adalah metode composite band RGB (Red Green Blue), band ratios, dan band spectral. Pada data Citra Landsat 8, metode interpretasi yang dilakukan didapatkan dua klasifikasi sebaran batugamping yaitu sebaran batugamping potensi tinggi dan sebaran batugamping potensi rendah. Setelah pengolahan data Citra Landsat 8, penelitian ini juga melakukan pengecekan langsung di lapangan untuk mendukung keberhasilan dari hasil interpretasi yang dilakukan. Penelitian ini memiliki implikasi yang cukup besar untuk memanfaatkan data Citra Landsat 8 untuk tujuan eksplorasi lebih lanjut.
Analisis Perbandingan Kadar MgO Dan SiO2 Pada Nikel Kadar Rendah di Kabupaten Kolaka dan Kabupaten Kolaka Utara La Ode Dzakir; Muhamad Karnoha Amir; Yogi La Ode Prianata; Muhammad Ilham Kadar
Jurnal Geomine Vol 10, No 1 (2022): Edisi April 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i4.1080

Abstract

Penelitian mengenai kadar mineral atau unsur lain dalam endapan nikel seperti MgO dan SiO2 pada bijih nikel kadar rendah saat ini masih sangat jarang dilakukan, sehingga diperlukan penelitian untuk menganalisis persentase kadar MgO dan SiO2 pada endapan nikel kadar rendah khususnya nikel kadar rendah yang berasal dari Kabupaten Kolaka dan Kabupaten Kolaka Utara. Penelitian ini bertujuan untuk menganalisis dan membandingkan hasil pengujian XRF pada sampel nikel Kabupaten Kolaka dan sampel nikel Kabupaten Kolaka Utara. Selain itu, penelitian dilakukan dengan observasi langsung di lapangan, tepatnya di Stockpile yang terdapat di salah satu perusahaan tambang nikel yang berada di Kabupaten Kolaka dan Kabupaten Kolaka Utara. Hasil penelitian ini dapat disimpulkan bahwa kandungan MgO sampel nikel dari Kabupaten Kolaka menunjukkan nilai persentase yang lebih kecil yaitu 11,22%, dibandingkan sampel nikel dari Kabupaten Kolaka Utara yang mencapai 18,49%. Sedangkan kadar SiO2 sampel nikel yang berasal dari Kabupaten Kolaka menunjukkan nilai persentase yang lebih tinggi yaitu sebesar 44,00%, dibandingkan kadar SiO2 pada sampel nikel yang berasal dari Kabupaten Kolaka Utara yang berkisar 36,74%. Ditinjau dari tipe endapan untuk pembentukan laterit, Kolaka terindikasi sebagai tipe Oxides Deposit dan Kolaka Utara terindikasi sebagai tipe Hydrous Silicate Deposit.
Optimalisasi Kinerja Pompa Centrifugal Multiflo MF 420EX In Open Pit Mines Abdul Halim; Mangkona Mangkona; S Rahmat Vicky Rezqi
Jurnal Geomine Vol 10, No 1 (2022): Edisi April 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i1.1195

Abstract

Dalam banyak aplikasi lapangan telah melakukan penyaliran pompa tambang dengan dasar teknik pertambangan  saja tanpa memahami  dasar-dasar pompa tambang seperti kemampuan pompa itu sendiri, pembacaan kurva pada masing masing pompa itu sendiri, moyoritas dunia tambang saat ini hanya mementingkan air keluar sehingga life time pada  pompa  itu sendiri  menjadi  singkat dan tidak terukur. Penelitian  ini dilakukan studi survey disalah satu mining terbuka site asam-asam coal project utnuk dapatkan data sistim pemompaan untuk di analisa. Tujuan penelitian ini adalah mengetahui desain perhitungan head loss pada pipa dan daya konsumsi bahan bakar pada sistim pemompaan dengan multiflow MF 420EX untuk mendapatkan penggunaan pompa yang efisien. Hasil dari penelitian nilai diperoleh total head loss (HDPE) awal proyek 133,39 m dan target diahhir proyek sebesar 162,75m. Untuk daya komsumsi bahan bakar awal sebesar 96,80 liter/jam dan target 118,79 liter/jam, dengan nilai tersebut dapat dijadikan dasar acuan perhitungan pemompaan yang akurat sesuai dengan anggaran yang direncanakan.
Analisis Kestabilan Lereng Metode Morgenstern-Price Jalan Poros Malino - Sinjai Kabupaten Gowa Hedianto Hedianto; A Al'faizah Ma'arief; Enni Tri Mahyuni
Jurnal Geomine Vol 10, No 1 (2022): Edisi April 2022
Publisher : Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33536/jg.v10i4.1007

Abstract

Malino-Sinjai Road, Gowa Regency is an area that is prone to landslides in the rainy season, where the geological condition is in the form of Baturape-Cindako Volcano unit, namely volcanic rock of Pliocene. The research location is located on Malino-Sinjai Road Km ± 54 Parangloe District and Km ± 71 Tinggi Moncong District, Gowa Regency, the average slope of the study area is 45 °. The purpose of this research is to conduct geological engineering observations on the slopes in the form of lithological conditions, and discontinuous areas on the slopes. Conduct slope stability analysis using software using the Morgenstern-Price method, and provide technical or design recommendations for the observed slope conditions. The research methodology uses primary data, namely data from observations of engineering geology and geometry of the slopes, as well as secondary data in the form of data from previous studies, books and also the results of laboratory tests of physical and mechanical properties of rocks. The results of the study obtained technical geological observation data that on the slope (A) which is located on Malino-Sinjai Road Km ± 54 Parangloe District in the form of basalt rock has a high level of weathering characterized by an average joint distance of 9 cm and the condition of the top of the slope area has been become residual soil, while on the slope (B) which is located on Malino-Sinjai Road Km ± 71 Kecamatan Tinggi Moncong in the form of tuff rock, the level of weathering is still in the mildly weathered category and the solid condition is not visible. Based on the results of interpretation using the Morgenstern-Price method, the slope safety factor value (A) is FK 1.101 which is considered unstable based on the minimum standard of slope safety factor of the Ministry of Public Works in 2014 which is 1.25. On the slope (B) the safety factor value is obtained, namely FK 1.371, where the slope is considered stable or safe. As for technical or design recommendations to prevent ground shaking, the slope (A) can use retaining walls or retaining walls and for slopes (B) use wire mesh or wire nets around the observation slope.
Analisis Probability Distribution Function Terhadap Perubahan Tutupan Lahan Dan Fraksi Awan Di Indonesia Jeddah Yanti; Chian-Yi Liu; Togi Tampubolon
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.v10i2.1075

Abstract

Land use exceeds the standard of suitability and availability over Indonesia, which causes uncontrolled land acquisitions every year. Changes in land use can be controlled by monitoring changes in land cover and the effect of land changes on hydrological cycle components such as cloud fraction. The land cover and cloud fraction distribution were identified using the NDVI index and cloud fraction parameters. The NDVI index value in Indonesia is 0.73 to 0.81, representing land cover in Indonesia, which is relatively high. Meanwhile, the cloud fraction showed the lowest value between 0.6 to 0.7 in summer and experienced the highest cloud cover at the peak of the rainy season. The analysis of the distribution of both land cover and cloud cover shows the consistency of value stability in the rainy season starting from November to May from 2003 to 2016. The correlation value based on the spatial analysis between the NDVI anomaly and the cloud fraction parameter anomaly has a value range of around -0. 8 to 0.8. The correlation between the NDVI anomaly and the cloud parameter anomaly has a negative correlation in Indonesia, including Sumatra, Kalimantan, Java and Bali, Sulawesi, Nusa Tenggara, Maluku, and Papua. Sumatra, Kalimantan, and Papua islands have a prominent role with a negative correlation between the NDVI anomaly and the cloud fraction parameter anomaly. It is feared to be caused by changes in land use to deforestation of natural area conservation areas into oil palm plantations and mining.
Indication Of Hydrothermal Alteration Based On Petrography Of Granit Garba (KGR), Tanjung Beringin Village, Muaradua District, South Sumatera Salsyabillah Nurul Aini; Endang Wiwik Dyah Hastuti
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.v10i2.1157

Abstract

The research was conducted in Tanjung Beringin Village, Muaradua District, South OKU Regency, South Sumatra. The location of this research is geologically located in the basement of the South Sumatra Basin which composes the Garba Mountains, namely Granit Garba. Granit Garba is an intrusion rock with the youngest age among the basement rocks forming the South Sumatra Basin. The lithology that composes this formation is a granitoid rock with interesting constituent mineral characteristics and there are indications of hydrothermal alteration processes that affect rock formation. The characteristics and hydrothermal alteration of these granitoid rocks can be identified using petrographic analysis of rock thin sections. Based on the petrographic analysis, it is interpreted that there are two groups of granitoids that make up Granit Garba. The two groups of granitoids are quartz monzonite and granodiorite. The difference between the two types of rock lies in the composition of the main mineral constituents. Quartz monzonite is a rock with minimal quartz composition and relatively the same percentage of plagioclase and alkali feldspar. Meanwhile, granodiorite has more quartz composition than quartz monzonite with relatively more plagioclase minerals than alkali feldspar minerals. The appearance of the thin section in the petrographic analysis of the rock also shows the influence of hydrothermal alteration as evidenced by the presence of secondary minerals. These secondary minerals form associations that occur in the phylic and propylitic zones. The phyllic zone is indicated by the presence of sericite, chlorite, and opaque minerals in the form of pyrite, while the propylitic zone has an assemblage of epidote, chlorite, and calcite minerals.
Determination Of Relative Error in Coal Resource Classification Based On Geostatistical Drill Hole Spacing Analysis: A Case Study of Coal Deposits at Batang Hari, Jambi Muhammad Fadhli; Budhi Setiawan
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.v10i2.1257

Abstract

Generally, the determination of resource classification is only qualitative based on the geometric factors and geological complexity that control it. However, as the prospect area is found to have a reasonably heterogeneous sediment characteristic, a method is needed that can be used to increase the level of confidence in determining the Optimum Drill Hole Spacing. Therefore, this study uses the application of geostatistics with the global estimation variance (GEV) method based on the relative error value of each parameter, namely the thickness geometry and quality in the form of Ash and VM. This research was carried out in Jangga Aur village, Bathin XXIV District, Batang Hari Regency, Jambi Province, Working Area of PT Berkat Bara Persada Jobsite PT Inti Bara Nusalima.The Drill Hole Spacing Analysis (DHSA) results will obtain optimum spacing on resource classification based on relative error values, namely 0-10% for measured resources, 10-20% for indicated resources, and 20% for Inferred resources carried out the on-seam reference. Based on the results of the study, it was found that the seam reference used was Seam D, then the spacing distance of the drill hole on the coal seam of the research area, which had an average distance of 80 m, with geostatic analysis could be increased up to a distance of 250 m in measured resources, indicated resources of 450 m and Inferred 800 m.
Karakteristik Mineralisasi Endapan Emas Epitermal Sulfidasi Rendah di Daerah Mekarbakti, Kecamatan Bungbulang, Kabupaten Garut, Provinsi Jawa Barat Rangga Bintang Ardaraja; Eddy Winarno; Arifudin Idrus; Okki Verdiansyah; Satriadi Satriadi
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.v10i2.1198

Abstract

The southern mountains of western Java have been known to have large gold deposit potential. The Mekarbakti area, located in Garut regency, is known to have gold-bearing quartz veins, but the distribution and characteristics of these veins are not well recorded. The purpose of this study is to determine the geological conditions of the deposits and the characteristics of the epithermal deposits in the study area, in term of alteration, ore mineralization, vein texture, and ore geochemistry. Field work includes random sampling of veins from surface outcrops and cores. Laboratory analysis includes mineragraphic, geochemical analysis by means of Fire Assay Atomic Absorption Spectrophotometry (FA-AAS) and Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES). The lithology of the Mekarbakti area is composed of volcanic rocks including andesite lava, andesite intrusion and pyroclastic rocks such as breccia and tuff. The mapping results show that the hydrothermal alteration that developed is divided into three zones of alteration type, namely the silicification zone (silica + - clay), the argillic zone (kaolinite + - smectite - illite) and the propylitic zone (chlorite - smectite - epidote - illite). Quartz texture is generally dominated by brecciated, colloform, comb, lattice bladed and cockade textures. The texture interpretation of the veins shows a crystalline quartz zone, which is enriched in base metals such as galena, sphalerite and chalcopyrite and a crustiform – colloform zone which usually contains gold and silver. Veins in the study area contain the elevated grades of 3.21 ppm Au and 75.5 ppm Ag.
Analisis Kestabilan Lereng pada Pit Bengkirai Tambang Terbuka Batubara di PT Guruh Putra Bersama Site Gunung Sari Kecamatan Tabang Kabupaten Kutai Kartanegara Kalimantan Timur Besse Putrilia; Sahrul Poalahi; Rina Rembah; Abdul Salam Munir
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.v10i2.1178

Abstract

PT Guruh Putra Bersama (GPB) merupakan salah satu perusahaan tambang yang berkiprah di bidang pertambangan batubara yang menerapkan sistem penambangan tambang terbuka dengan metode open pit dan berlokasi pada site Gunung Sari Kecamatan Tabang Kabupaten Kutai Kartanegara Provinsi Kalimantan Timur memiliki luas IUP 3.205 ha. Dalam kegiatan penambangan tambang terbuka, kestabilan lereng menjadi permasalahan yang perlu diperhatikan terhadap kegiatan penambangan yang beroperasi setiap harinya. Kondisi geometri lereng pada desain pit dengan kondisi aktual di lapangan berbeda juga merupakan salah satu masalah kesetabilan lereng. Lereng tambang yang aman dan stabil akan menjamin kelancaran kegiatan operasi penambangan, maka dari itu diperlukan analisis kestabilan lereng dan desain lereng tambang  yang optimal untuk menunjang proses kegiatan operasi penambangan yang lebih baik. Penelitian ini dilakukan di Pit Bengkirai dengan menggunakan data bor geoteknik GPBF-03 pada PT Guruh Putra Bersama (GPB). Kondisi kestabilan lereng  pada PT Guruh Putra Bersama (GPB) berdasarkan hasil analisis kestabilan lereng di Pit Bengkirai termasuk lereng yang stabil atau aman karena nilai FK1,3. Lereng tunggal pada daerah jalan dumping memiliki nilai FK sebesar 3,193 dengan tinggi lereng 8,6 meter dan sudut lereng 51,36°. Lereng keseluruhan pada Peta Situasi Tambang dan desain pit memiliki nilai FK sebesar 3,992 dan 3,286. Nilai FK pada lereng keseluruhan memiliki selisih 0,706 dikarenakan kedua geometri lereng keseluruhan berbeda, baik tinggi lereng maupun sudut lereng.  Namun karena kedua lereng keseluruhan memiliki nilai FK1,3 maka lereng tersebut stabil dan geometri lereng pada peta situasi tambang tidak perlu ubah dimensinya.
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.   

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