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Jurnal Geominerba
Published by Pusat Pengembangan Sumber Daya Manusia Geologi, Mineral, dan Batubara
ISSN : 25801376     EISSN : 29632196     DOI : -
Core Subject : Science, Education, Engineering,
Earth & Planetary Sciences Education Engineering Other
The GEOMINERBA journal is published by the Center for Human Resources Development, Geology, Minerals and Coal which is published every June and December. Published publications related to the Development of Human Resources in the Field of Geology, Minerals and Coal.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 89 Documents
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PENDEKATAN TEKNOLOGI DESALINASI UNTUK MENDUKUNG PENYEDIAAN AIR TAWAR BERKELANJUTAN DI PT AMMAN MINERAL NUSA TENGGARA Wiyatno Haryanto; Nanang Dwi Prasetya; Jorina Warountu; Nendi Rohaendi
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 7 No 2 (2022): Jurnal Geominerba 2022
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v7i2.107

Abstract

Air adalah sumber kehidupan untuk manusia dan seluruh makhluk hidup yang tinggal di planet bumi. Ketersediaan air tawar adalah sangat krusial, terutama untuk orang-orang yang tinggal di wilayah krisis air dengan daya dukung sumberdaya air yang rendah. Situasi yang sama pun terjadi di lingkungan PT AMMAN Mineral Nusa Tenggara (disebut PT AMNT) dimana perusahaan masih terus berupaya untuk menyeimbangkan permintaan air tawar dan pasokannya khususnya sehubungan dengan beberapa proyek ekspansi besar yang sedang berlangsung di Batu Hijau. Terdapat beberapa peningkatan permintaan air tawar apakah untuk kegiatan konstruksi maupun operasional di masa mendatang untuk mengakomodasi kebutuhan penambahan tenaga kerja, fasilitas-fasilitas baru, dan tambahan air proses. Saat ini, PT AMNT masih mengoperasikan sumur-sumur air tanah di cekungan air tanah Sejorong dengan rata-rata produksi harian sebanyak 9.000-m3/hari dimana proyek-proyek ekspansi besar ini membutuhkan tambahan air tawar hingga 4.500-m3/hari yang akan dipasok dari sumber-sumber air yang baru di luar fasilitas eksisting untuk menghindari pengambilan air tanah yang berlebihan. Pada akhirnya, teknologi desalinasi menjadi solusi alternatif sebagai pilihan terbaik dan menjanjikan dalam wawasan keberlanjutan setelah PT AMNT melakukan berbagai rencana untuk dapat mencadangkan sumberdaya air tanah.
JENIS DAN KONSISTENSI TANAH BAWAH PERMUKAAN KECAMATAN PEKALONGAN UTARA Sonia Fauziah; Dicky Muslim; Adi Hardiyanto; Risna Widyaningrum
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 7 No 2 (2022): Jurnal Geominerba 2022
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v7i2.111

Abstract

Pekalongan City is the northern coastal area of Java Island and is dominated by alluvial deposits. Pekalongan City’s rapid and fast development triggers much development to support the population’s need. Soil is vital in the construction of a building as a place for the erection of a building. This Paper aims to identify the type and soil consistency based on Cone Penetration Test (CPT) data. The data used amounted to 24 points, then identification of soil characteristics was carried out and map interpolation was carried out to determine the pattern of soil consistency distribution using Geographic Information System (GIS) software. The depth of the CPT test varies between 15.20 m - 20 m below the ground surface, where the qc value for a depth of 0 m - 20 m is 2.04 kg/cm2 to 138.68 kg/cm2. Based on soil classification by linking the conus resistance (qc) with the friction ratio (fr) shows the soil type in the study area, namely organic, clay, silt to sand with a very soft to hard soil consistency level.
KARAKTERISTIK ALTERASI BAWAH PERMUKAAN PADA SUMUR CKK-1A KEDALAMAN 250-822 METER WILAYAH KERJA PANAS BUMI DAERAH X, KABUPATEN SUKABUMI, JAWA BARAT Jasin Arrasyid Nugraha; Karyono; Oman Abdurahman; Adang Saputra; Lano Adhitya; Mochamad Nur Hadi; Wanda Adinugraha
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 7 No 2 (2022): Jurnal Geominerba 2022
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v7i2.112

Abstract

This research was conducted at the CKK-1A geothermal exploration well from a depth of 250 – 822 meters which is located in the geothermal working area area X, Sukabumi Regency, West Java. This study aims to determine the lithology type, alteration mineral type, alteration mineral zone, alteration type, temperature, fluid type, and correlate measured temperature (logging temperature and drilling mud temperature) with alteration mineral temperature (geothermometer). Megascopic observations were carried out using a loupe with a magnification of 20x, while microscopic analysis and XRD (X-Ray diffraction) analysis were carried out by the PSDMBP laboratory. There are 5 types of lithological variations in the research wells, namely, altered tuff breccia, altered andesitic breccia, altered andsit, altered tuff, and altered volcanic breccia. From the results of microscopic analysis and XRD analysis, several types of alteration minerals were present, namely chlorite, zeolite, carbonate, secondary quartz, tridymite, albite, clay, oxide, and pyrite. Based on the assemblage of alteration minerals present, there are 2 zones of alteration minerals, namely: 1) Chlorite – Zeolite Zone from a depth of 250 – 732.40 meters, 742.25 – 803.60, and 805.25 – 822 meters; and 2) Clay Mineral Zone from a depth of 732.40 – 742.25 meters and 803.60 – 805.25 meters. The Chlorite – Zeolite Zone is interpreted as a Sub Propylitic Alteration Type with a temperature range of >200°C and formed in neutral fluids, then the Clay Mineral Zone is interpreted as an Argillic Alteration Type with a temperature range of <180°C and formed in near neutral acidic fluids. The correlation between measured temperature (logging temperature and drilling mud temperature) and hydrothermal alteration mineral temperature (mineral geothermometer) shows that there is a mismatch between the presence of high temperature minerals >200°C, with measured temperature values ​​only ranging from 10°C – 58°C . As well as the absence of increased heat present in Mud Temperature Out. It is interpreted that the high temperature characteristic minerals have cooled and become fossilized. This can also be seen from the presence of low temperature clay minerals (monmorillonite) in the high temperature chlorite - zeolite zone.
TINDAK LANJUT PENGEMBANGAN DIKLAT TEKNIK PELEDAKAN PADA PENAMBANGAN BAHAN GALIAN Wanda Adinugraha; Zanescaya Wirasangka
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 1 No 1 (2017): Jurnal Geominerba - 2017
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v1i1.117

Abstract

The passing rate of the blaster training in mining tended to decline from 2005 to 2014 with an averagedecline of 20%, while the participants of training rose sharply and peak in 2013 as many as 234 participants.To find out the condition that lead to the decrease of passing rate, the Center of Training and Education ofMineral and Coal conducted a study by distributing questionnaires to alumni of 2nd- class blaster. As a result298 questionnaires responded by the alumni. From the study, it is identified that participants of blaster trainingmeet a difficulty to learn and understanding the handbook that applies, while the duration of the training itselfis considered too short. For that reason there is an idea to split the blasters training into two types of trainingbased on explosives knowledge and blasting technique. It is inportant to develop the model of blaster trainingthat is able to meet the criteria of blast competency under the considerations of the hierarchy and support ofmine blaster assignment.
METODE KUANTITATIF PADA ANALISIS KEBUTUHAN DIKLAT BIDANG MITIGASI BENCANA GEMPA BUMI Aperta Ledy Alam
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 1 No 1 (2017): Jurnal Geominerba - 2017
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v1i1.118

Abstract

The use of quantitative methods for Training Needs Analysis (TNA) by using questionnaire instrument that contains statement of competency and is calculated by certain formulation can be a tool in mapping employees’ competency gap. This formulation-based calculation gives two main outcomes: mapping of competency gap category and competency gap among respondents. The classification of competency gap in TNA is divided into competencies with high and low scores. One of the final results of this research is recommendation of competency gap, and its mutual response with education and training, or other kinds of employee’s development programs.
KARAKTERISASI KONSENTRAT TEMBAGA INDONESIA UNTUK DIKLAT PENINGKATAN NILAI TAMBAH TEMBAGA Imelda Hutabarat
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 1 No 1 (2017): Jurnal Geominerba - 2017
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v1i1.119

Abstract

Indonesia many copper reserves which are spread in certain locations along the ‘ring of fire’, the most active seismic region in the world which is started from the west of Sumatera up to east of Papua. Nowadays, the reserves have been mined extensively in Batu Hijau, Nusa Tenggara Barat and Erzberg and Grasberg Papua. The goal of this paper is to present the results of Indonesian copper concentrate characterization for further education and research purposes.This characterization is considered important in determining metal extraction flow process for Indonesian copper concentrate. Materials that are used in this study are copper concentrates after flotation process. These copper concentrates, with mineralogical composition of chalcopyrite and pyrite, contain various precious metals, such as gold, silver, platinum, palladium, selenium, tellurium, and some other metals in several oxidation states. The characterization method includes chemical analysis using X-ray fluorescence spectroscopy (XRF) for basic metals and inductively coupled plasma mass spectrometry (ICP-MS) special for precious metals. While, X-ray diffraction (XRD) is used for the mineralogical phases. Subsequently, the element visualization in element sample was characterized by scanning microscopic with energy dispersive X-ray spectrometer (SEM-EDX) to analyse the condition of elements after treatments in certain temperatures.
ANALISIS PENENTUAN JARAK TITIK INFORMASI DAN KLASIFIKASI SUMBER DAYA ENDAPAN NIKEL LATERIT BERDASARKAN ANALISIS VARIOGRAM Irfan Marwanza; Chairul Nas; Theresa Naomi Putri; Ahmad Helman Hamdani; Iyan Haryanto
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 1 No 1 (2017): Jurnal Geominerba - 2017
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v1i1.120

Abstract

Estimation process of precipitated mineral deposit is usually done by using conventional method which is only based on sample position. The accurate estimation method, that includes spatial and temporal continuity, is considered important, and a method that takes account of this continuity is Kriging Method. A study will be conducted by making laterite nickel zonation, based on degree of drill core (coring), while content appraisal and nickel resource comparison in block model will use Kriging Method. Data of this study is taken from southern block exploration of PT. Haltim, Wailukum, district of East Halmahera, North Maluku. Description method isused to analyse assay data, lithology, collar, and bore hole survey. Analysis method is done by using Surpac 6.3 software. Through block model result, it is found that the spread of nickel, ferrum, MgO, SiO2 and cobalt is in every percentage of the level. This method will generate experimental Variogram using lag value, nugget effect and sill that should be taken into account to make an accurate estimation result. The classification is done based on thickness and weighting of saprolite zone in southern block. The result of classification using sill method for saprolite zone is one third sill for measuring area of 35 meter, and two third sill for appointed area of 55 meter. For that reason, in this study area, for 50 meter gap of bore hole is classified as appointed area.
APLIKASI SPATIAL MULTI CRITERIA EVALUATION (SMCE) UNTUK EVALUASI PENGGUNAAN LAHAN EKSISTING DAN RENCANA TATA RUANG DI KOTA TAMBANG SAWAHLUNTO Nendi Rohaendi
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 1 No 1 (2017): Jurnal Geominerba - 2017
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v1i1.121

Abstract

The aim of this study is to evaluate spatial planning, especially for mining city, by using Spatial Multi Criteria Evaluation (SMCE) method. This Method is a compilation of Geographic Information System (SIG) and Multi Criteria Evaluation (MCE) that is developed by ITC – Netherlands as a module in ILWIS software. Nowadays, SMCE has been used for many applications, such as: transportation plan, land selection, disaster area mapping, etc. SMCE has several strengths, for example: it is able to combine spatial and non-spatial data. Generally, there are three main stages in SMCE that covers: intelligence, design, and evaluation. Result of the study shows that SMCE is applicable for evaluation of soil appropriateness for spatial planning in cities. SMCE is applicable for accommodating choices of stakeholders, it is also able to reconcile interest conflict that may appear from stakeholders, and lastly, it is good to evaluate land utilization based on some criteria. SMCE is helpful to make decision in determining policy of areaplanning, especially when it is based on spatial data. Research area can be categorized in five classes based on land suitability, they are: no suitability, low suitability, medium suitability, good suitability, and high suitability land for specific land usage. There are three main data used in this research: land utilization existing data which is taken from image analysis, SMCE map, and spatial plan map. These three maps are studied and overlayed to analyse the development of spatial pattern in study area which is resulted in table data. In general, land utilization that has been analysed in this research covers settlement, rice field, mining (tourism) and forest.
PENGEMBANGAN METODE PEMBELAJARAN KESELAMATAN DAN KESEHATAN KERJA DI PPSDM GEOLOGI, MINERAL, DAN BATUBARA Harry Wibawa
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 1 No 1 (2017): Jurnal Geominerba - 2017
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v1i1.122

Abstract

Human Resources Development Center of Mineral Geology and Coal (PPSDM Geominerba), as an institution that conducts education and training for mineral and coal subsector owns an important role in reinforcing the improvement of workplace safety and health (K3). PPSDM Geominerba is wished to give high quality education and training, not only theoretically but also practically, through practical and applied activity in order to give full awareness and concern for the employee in improving workplace safety and health. So far, the activity of K3 training is conducted by using lecturing method in the classroom, and it does not combinetheoretical and practical knowledge. Hence, the learning outcomes are not enough to give experience, life skill, and motivation for the participants of training. For that reason, it is important to develop a method to learn K3 that is able to integrate and apply contextual knowledge or skill, so participants will be able to apply the knowledge to achieve the goal of K3 in their workplace. Learning method that should be improved covers the combination of lecture, discussion, practice, role play, observation and discussion, or by using other applicable combination. For cognitive learning objective, it is good to combine lecture, Q&A, and discussion. Training material that needs participant’s psychomotor skill can be taught by practical method. These methods aresuggested to give participants direct experience and to make them capable to apply the knowledge and skill in their workplace.
KOMPARASI KARAKTER PENGAYAAN LOGAM PADA DUA SEKSI PLUTON LASSI DI WILAYAH SOLOK, PROVINSI SUMATRA BARAT Ronaldo Irzon; Mamat Suhermat; Hilman Suwargana; Kurnia; Windi Anarta Draniswari
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 8 No 1 (2023): Jurnal Geominerba - 2023
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v8i1.98

Abstract

Intrusions in Sumatran are part of the granitoid range of Southeast Asia. The Volcanic Arc Suite is located in the western part of Sumatra and on the Bukit Barisan range. The intrusions in this province are unique because they are small pluton, including Pluton Lassi, unlike the intrusions in East Mandala and Central Mandala which are batholiths. Sumatra situated is in a tropical environment so it is vulnerable to weathering. This study aims to compare the impact of weathering on metal enrichment in two Pluton Lassi profiles from two different sections. The composition of each sample was analyzed using XRF and ICP-MS at the Center for Geological Survey. Fresh samples are classified as granodiorite based on microscopic analysis. Based on chemical analysis, the sample is diorite, high-K Alkaline Calc series, metaluminous, and I-type. Both profiles show that the levels of Fe2O3T, Al2O3 and TiO2 rise with increasing weathering intensity. On the other hand, SiO2, CaO, MgO, Na2O, and K2O are decreased. Light-REE are more abundant than heavy-REE in all samples. The studied profiles reveal differences in the type of Eu anomaly, intensity Light-REE against heavy-REE, and the character of heavy-REE normalization.

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