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nendi rohaendi
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PPSDM Geominerba Jl. Sudirman N0. 623
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INDONESIA
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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PENYELIDIKAN GEOLISTRIK TAHANAN JENIS UNTUK PENDUGAAN POTENSI AIR TANAH DI KAMPUS LAPANGAN PPSDM GEOMINERBA CIPATAT – PADALARANG Arif Budiyono; Antonius Alex Harmoko
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 4 No 1 (2019): Jurnal Geominerba 2019
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4932.772 KB) | DOI: 10.58522/ppsdm22.v4i1.84

Abstract

Availability of ground water at the PPSDM Geominerba Cipatat field campus - Padalarang is a problem that must be taken seriously enough and planned in order to improve services in the use of the field campus to support education at PPSDM Geominerba. Based on this, a study of the potential for groundwater availability has been carried out to overcome existing problems. One of the efforts made is to conduct a type of geoelectric resistivity investigation to illustrate the potential of groundwater in the field campus area. Measurement and data retrieval is done by Schlumberger (Vertical Electrical Sounding) and dipole-dipole (Profiling) configurations on 5 sounding points and 2 profiling lines. From the investigation conducted, it was found that the area lithology of the field campus was dominated by limestone, with the results of the interpretation obtained 3 main layers, namely: tuff, sand, clay tuff, and limestone. The lower limit of the limestone layer cannot be ascertained through this investigation due to the inadequate length of coverage factor both for sounding techniques and profiling techniques The location around the expected point of GL-3 is a more realistic place for groundwater extraction with a slight shift to the north. The thickness of the low resistivity layer that is not too thick is expected to provide enough contact area to allow storing and capturing more meteoric water besides the surface water collected in the porous layer.
ANALISIS GEOMORFOLOGI KAWASAN KAMPUS LAPANGAN PPSDM GEOMINERBA DAN SEKITARNYA Suryo Hespiantoro; Aperta Ledy Alam
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 4 No 1 (2019): Jurnal Geominerba 2019
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6777.829 KB) | DOI: 10.58522/ppsdm22.v4i1.85

Abstract

The PPSDM Geominerba Field Campus, is located in Gunung Masigit Village, Citatah Subdistrict, West Bandung Regency, West Java Province. The Campus lies on dominantly carbonate rocks area and cropout volcanic rocks at some other locations, that are formed different morphologies. The rocks composition and rocks physics are involving to constructed the morphology in this area. Based on the slope condition, landscape, and rocks composition, the landscape on PPSDM Geominerba Field Campus and it surrounding, divided into 2 (two) Geomorphology Units. First, Karst Morphology Unit (K2), 70% - 140% slope percent, very steep to almost vertical slope, and the area is constructed by dominantly coral limestone, and a littie bit of massive and crystalline limestones. Second, Denudational Geomorphology Unit (D2), 15% - 30% slope percent, moderately steep slope and the area is constructed by breccias and sandstone volcanic rocks, that reserved ground water or as aquifer layers in PPSDM Geominerba Field Campus and it surrounding. The result of this geomorphology study can be used for environment and geological hazards training materials.
ANALISIS STATISTIK UNTUK MENENTUKAN PENGARUH KEMAGNETAN DAN FRAKSI TERHADAP EKSTRAKSI Al2O3 PADA PROSES MAGNETIC SEPARATION Sri Winarni; Stefanus Suryo; Neneng Sunengsih
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 3 No 2 (2018): Jurnal Geominerba - 2018
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v3i2.86

Abstract

This study examined the statistical analysis on the magnetic separation process of Al2O3 minerals. The experiment was conducted by the Center of Mineral and Coal Technology Research and Development byattempting the magnetic field strength (magnetism) and mineral size (fraction). The measurements made on the magnetic separation process are in the form of percentage of Al2O3content. The aim of this study was to obtain a combination of treatment of the magnetism and fraction factors which produced the best Al2O3 levels. The statistical analysis method used is Anovaand Duncan’s test. The testing of Anova assumptions was carried out and it was found that the assumption of the normality and homogeneity of various residuals was fulfilled, so that the test results were guaranteed valid. The results obtained on the magnetism factor showed that 7500 gauss magnetic field strength produced the highest Al2O3 content with an average of 57.25% and a standard deviation of 1.62. In the fraction factor, the highest Al2O3 content was produced by the fraction -30 + 60 mesh with an average of 57.39% and a standard deviation of 1.79.
PELINDIAN SIANIDASI TERHADAP BIJIH EMAS HASIL OKSIDASI DENGAN MENGGUNAKAN HIDROGEN PEROKSIDA Revi Timora Salajar; Imelda Hutabarat
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 3 No 2 (2018): Jurnal Geominerba - 2018
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v3i2.87

Abstract

The low yield of gold in the direct cyanidation process of the sulfide refractory gold ore has led to various attempts to modify the cyanidation process directly to increase the gold yield. One of them is by conducting a pre-processed of sulfide refractory gold ore with the use of oxidative materials before the cyanidation process. The effect of hydrogen peroxide (H2O2) as an oxidative material on pre-processed sulfide refractory gold ore has been investigated. The important variables in the test are the concentration of hydrogen peroxide, cyanide, pH of the leaching solution, and particle size. The concentration of hydrogen peroxide and cyanide has a significant effect on the level of gold yield. An optimum gold yield was achieved at 0.75 M of the hydrogen peroxide concentration with a cyanide concentration of 0.14%. This gold yield has increased the recovery process from 70.37% (without the pretreatment) to 85.19% (with a pretreatment process). The results of this study provide the possibility that the direct cyanidation of sulfide refractory gold ores with the use of pre-treated oxidative materials allows it to remain competitive in its commercial applications.
POTENSI GEMPA BUMI DAERAH LEBONG, PROVINSI BENGKULU Supartoyo; Nia Kurnia Praja; Noviardi Titis Praponco; Suryo Hespiantoro
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 3 No 2 (2018): Jurnal Geominerba - 2018
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v3i2.88

Abstract

Lebong is an area in Indonesia that is prone to the earthquake caused by the subduction zone in the sea and active fault on the land. The morphotectonic analysis and the source of the destructive earthquake show that the earthquake in Lebong area is caused by the active faults of Ketaun segment, Sumatra fault, and Pelabai fault. Ketaun segment of Sumatra fault caused a destructive earthquake in 1952, while Pelabai fault caused a destructive earthquake in 2017. The destructive earthquake on Desember 6, 2017 gave us a lesson on the importance of themitigation effort in Lebong area. The mitigation effort can minimize the impact of the earthquakes that may be repeated in the future.
PENENTUAN ZONA BAHAYA TSUNAMI BERDASARKAN PEMODELAN DI WILAYAH GUNUNG KIDUL, YOGYAKARTA Rahayu Robiana; Pandu Adiminarno; Arianne Pingkan L.
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 3 No 2 (2018): Jurnal Geominerba - 2018
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v3i2.89

Abstract

The coast of Gunung Kidul is divided into two type of beaches, straight beaches with cliffs and sloping beaches with bays. Even though the sloping beach is a small part of Gunung Kidul region, but there are high intensity of activities, such as settlements, fishing, and tourism area. The tsunami inundancy mapping through the modeling for narrow beaches with bays requires detailed topographic data obtained through aerial photography using drone. The source of tsunami generation uses earthquake scenarios from the megathrust zone in southern Java with magnitudes of 7.0, 7.5, 8.5 and 8.7. The modeling results show that tsunami with a maximum height can threaten the facilities and buildings in the coastal area where the reasearch takes place, including Baron, Krakal, and Sadeng beach.
PEMETAAN KELURUSAN DAN APLIKASINYA UNTUK PENILAIAN BAHAYA GERAKAN TANAH: STUDI KASUS WILAYAH SUMEDANG Nendi Rohaendi; Hilman Suwargana
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 3 No 2 (2018): Jurnal Geominerba - 2018
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v3i2.90

Abstract

Sumedang has a high potential for landslide. The landslide can cause property damages and casualties. According to some researches, landslide is affected by many factors, such as geological structure. One of the methods to discover the geological structure is by conducting lineament mapping based on SRTM data (shuttle radar topography mission). After the lineament mapping is collected, the fault density analysis is conducted by using geography information system software. Then, the result of the analysis is analyzed using qualitative methods of drainage pattern analysis, lithology, and rose diagram analysis. The result of the field check shows that the area with a high fault density has a high potential of landslide. The result of this research can be useful as a preliminary data for the comprehensive landslide analysis in the research area.
MENHIR DI DAERAH DENATANA, KECAMATAN WOLOMEZE, KABUPATEN NGADA, NUSA TENGGARA TIMUR SEBAGAI OBJEK GEOWISATA UNTUK KUNJUNGAN DIKLAT GEOWISATA Pudjo Asmoro; Fiati Nurmaya
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 3 No 2 (2018): Jurnal Geominerba - 2018
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v3i2.91

Abstract

There are at least three menhir locations in Ngada Regency, Flores, East Nusa Tenggara, such as menhir which is located in the middle of rice field in Mengeruda Village, Soa Subdistrict;menhir in Naru Village; and menhir in Tiwuriwu Village, Bena, Jerebuu Subdistrict. These menhirs are still oftenly used for traditional events. Menhir has become one of the interesting sites to visit. Aside from being an educational tourism object, menhir is also used as a research object or as an object of natural beauty. Menhirs formed by natural processes in the Denatana are only formed on the cliffs of the Nginamanu River and have relatively similar morphology and physical properties of rocks with other places. The menhir consists of pillars composed by pumice brecciaswhich is spread along the river valley. The menhir constituent rocks in the form of pyroclastic deposits are, laharic, compact, clastic, in a grain size up to 5 cm, with the main component of pumis. The erosion process producesa rock arrangement in the form of a menhir arrangement trending northwest-southeast. There were no former human activities or traditional ceremonies around the menhir. This study aims to collect data information of inventory data on menhir geotourism objects in Ngada Regency and its surroundings which is expected to provide alternative locations for the Field Practice of environmental geology training, especially Geotourism Geology training. The results showed that the menhirs found in the Denatana area, Wolomeze Subdistrict were formed on pumice breccia rocks on the cliffs of the Nginamanu River with a slope of 30o -40o for the southern cliff and between 60o-80o for the northern cliffs, in the shape of thick and thin pillars, due to the erosion process upstream and to the sideways.
ANALISIS STAKEHOLDERUNTUK DESAIN PROGRAM PENGEMBANGAN SDM RESPONSIF GENDER BIDANG ESDM Rohmatulloh; Retno Kusumastuti; Julian Ambassador Shiddiq
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 3 No 1 (2018): Jurnal Geominerba - 2018
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v3i1.92

Abstract

The purpose of this literature review is to discuss the concept of stakeholder analysis and its application to design the model of gender-responsive human resources development program at Education and Training Agency for Energy and Mineral Resources. The use of stakeholder analysis in program design is to provide information on mapping the interests, influences, and strategies of its participation. By optimally participating in program design, the stakeholder is expected to get much support in implementing the program. The application of stakeholder analysis into the program design of gender-responsive human resource development shows the number of identified twenty stakeholders from internal and external. It is analyzed by using the interest and influence matrices in four quadrants, ie players, subjects, crowds, and context setters. The participation strategies used in this study are adjusted to each stakeholder position: 1) players and context setters with information delivery and consultation strategies, 2) subjects with engagement and joint strategies, and 3) crowds with collaborative or empowerment strategies. This analysis information is used as input for the program planning team to design the program according to the needs and interests of all parties.
OPTIMALISASI PERALATAN PENGOLAHAN MINERAL DI KAMPUS LAPANGAN CIPATAT PADALARANG Imelda Hutabarat; Revi Timora Salajar
JURNAL GEOMINERBA (JURNAL GEOLOGI, MINERAL DAN BATUBARA) Vol 3 No 1 (2018): Jurnal Geominerba - 2018
Publisher : PPSDM Geominerba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58522/ppsdm22.v3i1.93

Abstract

A good quality of training requires a well-prepared equipment, infrastructure, and facilities, including the Indonesian National Working Competency Standards (RSKKNI), Curriculum Standards, and Modules and Competency Testing Material (MUK). The purpose of this paper is to design the flowing process by preparing the equipment, infrastucture, and facilities of the Mineral Processing field in PPSDM Geominerba Campus Cipatat Padalarang to be utilized optimally for the tainings held by PPSDM Geominerba. The design preparation begins with a literature study of the raw material types for the mineral processing process by considering its availability, mineral types, the processing plan, and the necessary equipment. Furthermore, the arrangement of the flowing process for non-metallic minerals (limestone) and metallic minerals (gold) is done which then can set the position of the equipment in the Mineral Processing field of Campus Cipatat Padalarang, West Java. Through this paper, the optimization of mineral processing equipment in Campus Cipatat Padalarang can be realized, especially for Non-Metal Minerals Processing Training (limestone) and Metal Minerals Processing Training (gold). Limestone can be processed to obtaine a fine concentrates which is ready for the combustion process to produce a fine limestone which meets the subsequent industries. Meanwhile, the metal minerals (gold) can be processed through the comminution process with jaw crusher and ball mill. The process can be done with the shaking table to produce a gold concentration which is ready for the gold smelting.

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