cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota bandung,
Jawa barat
INDONESIA
Buletin Sumber Daya Geologi
Published by Pusat Sumber Daya Mineral Batubara dan Panas Bumi
ISSN : 19075367     EISSN : 25801023     DOI : -
Core Subject : Science, Education, Social, Engineering,
Education Energy Engineering Environmental Science
uletin Sumber Daya Geologi merupakan Makalah berkala ilmiah terakreditasi LIPI bidang mineral, energi fosil, dan panas bumi. Makalah ini terbit tiga nomor dalam satu tahun pada bulan Mei, Agustus dan November. Pada Tahun 2010, Buletin Sumber Daya Geologi mendapat Akreditasi B sebagai majalah Berkala Ilmiah, kemudian akreditasi ulang Tahun 2012, dan akreditasi terbaru di Tahun 2015 untuk tiga tahun kedepan dengan nomor ISSN (print) : 1907-5367. Tahun 2017 Buletin Sumber Daya Geologi mendapatkan nomor eISSN : 2580 - 1023 untuk versi onlinenya.
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol. 17 No. 1 (2022): Buletin Sumber Daya Geologi" : 5 Documents clear
Bahasa Inggris KORELASI ANTARA PEMODELAN INVERSI 3-D MAGNETOTELLURIK DENGAN DATA SUMUR DI LAPANGAN PANAS BUMI PATUHA: CORRELATION BETWEEN 3-D MAGNETOTELLURIC INVERSION MODEL WITH DRILLING DATA IN PATUHA GEOTHERMAL FIELD Chevy Iskandar; Yunus Daud
Buletin Sumber Daya Geologi Vol. 17 No. 1 (2022): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v17i1.328

Abstract

The Patuha geothermal field is located in West Java Province, Indonesia and developed by state owned company PT Geo Dipa Energi (Persero). The Commercial Operation Date (COD) for Patuha was in September 2014 with plant capacity of 1x60 MW. Until now, Patuha Unit I geothermal field has been running for almost 7 years. The current production wells have experienced a natural decline, which is showed by a reduction in production capacity to the initial production. This causes the steam supply to the Power Plant Unit I to be not optimal, so a make-up well program is needed. Furthermore, to support the addition of electricity production capacity from geothermal energy in Indonesia, the development of the Patuha Geothermal Field is planned to be carried out for the next Power Plant Unit’s expansion (Unit 2 and Unit 3). Nevertheless, determining the location for both make-up and development drilling might still pose high risks. This is especially because the development area (where production and injection wells are located) is only concentrated in the eastern area of the contract area. Geophysical data especially Magnetotelluric (MT) has an indispensable role considering the limited data and the limited number of existing wells that cover the entire Patuha prospect area. To understanding the subsurface feature and see the correlation between MT model with well results in Patuha Geothermal Field, MT and TDEM survey were conducted in the eastern and western parts of Patuha area with total 100 stations. Considering the complexity of the subsurface condition in volcanic area, 3-D inversion of the MT data will be the most representative approach to investigate geothermal system in Patuha Geothermal Field. An obvious subsurface resistivity distribution revealed by the 3-D inversion showed a good agreement with well results especially in mapping the temperature distribution both vertically and horizontally. Generally, the resistivity distribution consists of a conductive zone (1–10 ohm-m) at the shallow part overlying a reservoir zone with a rather higher resistivity range (20–60 ohm-m). The conductive zone (<10 ohm-m) is correlated with Base of Conductor (BOC) of the wells that indicated by the presence of the argillic mineral. Meanwhile, the resistivity value around 15-20 ohm-m is correlated with Top of Reservoir of the production or injection well which is characterized by the presence of a convective temperature. In addition, from the results of resistivity mapping there is a very good correlation also in determining of reservoir boundary which is characterized by the presence of reverse temperature from the well. These results can be used as a guidance for better development strategy and drilling prognosis for the next drilling campaign especially in the area which limited number of wells.
PEMBENTUKAN BAUKSIT DAN FERIT PADA PROFIL PELAPUKAN DI KABUPATEN LINGGA: FORMATION OF BAUXITE AND FERRITE IN WEATHERED PROFILES ON LINGGA REGENCY Ronaldo Irzon
Buletin Sumber Daya Geologi Vol. 17 No. 1 (2022): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v17i1.335

Abstract

Weathering could stimulate the formation of several economic deposits such as bauxite, ferrite, nickel, manganese, and ion-adsorption type REE. Lingga Regency is situated near the equator with a tropical climate that is vulnerable to weathering. The area is constituted of several Paleozoic rock units and is located near the Bentong-Raub Suture that sustains intensive weathering for a long time. This study aims to describe the geochemical characteristics of weathered rocks and the formation of weathering-related mineral deposits in the Lingga Regency. All samples are weathered based on LOI, CIA, and IOL parameters. The SiO2-Fe2O3T-Al2O3 triangular diagram shows that ferrite and bauxite are formed in totally four locations. The highest Al2O3 concentration of bauxite reaches 60%, while the highest Fe2O3T of ferrite is 69%. La/Y ratio defines that weathering happened in a basic environment, while Al/Ti ratio concludes that the studied samples are originated from felsic rock. REE in weathering profiles are more extractable than those in igneous rocks, but the composition in this study is not attractive for further exploitation as they are range in low to medium concentrations. Further research is required to quantify bauxite and ferrite resources and reserves in Lingga Regency.
KARAKTERISTIK LITOTIPE DAN HUBUNGANNYA TERHADAP CLEAT BATUBARA DI DAERAH KUALA KUAYAN, KOTAWARINGIN TIMUR, KALIMANTAN TENGAH: LITHOTYPE CHARACTERISTICS AND THEIR RELATION TO COAL CLEATS IN KUALA KUAYAN AREA, EAST KOTAWARINGIN, CENTRAL KALIMANTAN Muhammad Abdurachman Ibrahim; Sigit Arso Wibisono
Buletin Sumber Daya Geologi Vol. 17 No. 1 (2022): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v17i1.343

Abstract

The characteristics of coal can be seen from the lithotype and cleats. This research studied about low rank coal from Dahor Formation to characterize lithotype, cleats, and luster of the coal. Coal lithotypes are associated with maceral in the form of thin bands. Cleats are fractures in coal. Luster is the bright appearance in coal. The coal samples for this research are obtained from Kuala Kuayan area, Kotawaringin Timur, Central Kalimantan. Coal samples were obtained from three exploration wells in this area. Analysis was carried out by looking at the luster and cleats megascopically to the coal seam and to the depth of the coal. The lithotype characteristics indicates that the deeper the depth of the coal seam, the better the bright luster of the coal. The lithotype characteristics are classified as banded coal/clarain. Cleat characteristics from this research are more cleat ferquency and more bright luster. Litotype is quite influential on the frequency of cleats.
OPTIMASI VALUASI EKONOMI ENDAPAN NIKEL LATERIT MEMPERHITUNGKAN BIAYA LINGKUNGAN: OPTIMIZATION OF THE ECONOMIC VALUATION OF LATERITIC NICKEL DEPOSITS CONSIDERING ENVIRONMENTAL COSTS Wahyu Sasongko; Rheva Dwiky Adhitya
Buletin Sumber Daya Geologi Vol. 17 No. 1 (2022): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v17i1.346

Abstract

Optimization of mineral economic valuation aims to determine the maximum net present value of a project over the life of mine. The economic valuation optimization model in this study is the development of the Lane (1988) and Sasongko (2013) model by considering environmental costs and referring to the cash flow framework. The research methods are include the following: (1) resource modeling and estimation, (2) mineral economic valuation modeling, (3) solution model determination, and (4) mineral economic valuation. Resource modeling in the block model with a size of 25 m x 25 m x 1 m. The block content estimation uses the inverse distance weighting (IDW) interpolation method. Economic valuation optimization modeling in this research is modeling in terms of cash flow by considering environmental costs and government policies such as taxes, royalties, and depreciation. Optimizing cut-off grade is an attempt to determine the optimum grade that will produce the maximum profit or net present value (NPV). The solution model in this case includes cut-off grade optimization for profit optimization and NPV optimization. The model solution to determine the optimum cut-off grade depends on constrains of the mining, concentrating and refining. Determination of the cut-off grade optimization model solution using analytical methods. In the case study, the estimated amount is US$4,253,566 tons of nickel ore. At a constant mining rate at an optimum level of 0.95%, the mine life is 4.85 years with an NPV of US$811,248,447. Optimization of economic valuation with NPV indicator, the life of mine of 4.44 years and maximum NPV of US$841,596,460. The cut-off grade value varies in each mining year: the 1st year with a grade of 0.99%; 2nd year level 0.99; 3rd year level 0.98%; 4th year level 0.97%; 5th year the rate is 0.95%. NPV economic valuation optimization has a greater value and shorter time, compared to profit optimization (profit).
MINERALISASI ENDAPAN SINABAR DAERAH BUKIT TEMBAGA KECAMATAN HUAMUAL, KABUPATEN SERAM BAGIAN BARAT, MALUKU: MINERALIZATION OF CINNABAR DEPOSIT AT TEMBAGA HILL, HUAMUAL DISTRICT, WESTERN SERAM REGENCY, MALUKU Herfien Samalehu; Arifudin Idrus; Nugroho Imam Setiawan
Buletin Sumber Daya Geologi Vol. 17 No. 1 (2022): Buletin Sumber Daya Geologi
Publisher : Pusat Sumber Daya Mineral Batubara dan Panas Bumi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47599/bsdg.v17i1.348

Abstract

Iha – Luhu is located in the western part of Seram Island, Maluku which is placed at an elevation of 9 up to 341 meters above sea level and occupies Taunusa Metamorphic Complex. This study aims to study geological control, mineralization characteristics and ore geochemistry of cinnabar deposit in Iha - Luhu. Research method applies a literature review, fieldwork for sampling, geological mapping, alteration & mineralization and laboratory analysis including polished section, ore geochemistry (FA/AAS and ICP-AES, XRF) and elemental mapping (Micro-XRF). The results showed that characteristics of cinnabar deposits in Iha – Luhu were formed in two type of veins (fracture-related mineralization) and disseminated in metapelites and quartz-muscovite phyllite hostrocks and controlled by NNW-SE and NE- SW trending faults. Mineralization consists of cinnabar (±metacinnabar), arsenopyrite, stibnite, sphalerite, hematite, minor pyrite±pyrrhotite with gangue minerals consisting of quartz, illite, smectite and kaolinite. Cinnabar ore contains an abundance of Zn, Sb, Fe, As, indicating presence of precious metal (gold) and mercury (Hg) content reaching 72.4%.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2022 2022


Reset
Filter By Issues
All Issue Vol 20 No 2 (2025): Buletin Sumber Daya Geologi Vol 20 No 1 (2025): Buletin Sumber Daya Geologi Vol 19 No 3 (2024): Buletin Sumber Daya Geologi Vol 19 No 2 (2024): Buletin Sumber Daya Geologi Vol 19 No 1 (2024): Buletin Sumber Daya Geologi Vol. 18 No. 3 (2023): Buletin Sumber Daya Geologi Vol 18 No 3 (2023): Buletin Sumber Daya Geologi Vol 18 No 2 (2023): Buletin Sumber Daya Geologi Vol. 18 No. 2 (2023): Buletin Sumber Daya Geologi Vol. 18 No. 1 (2023): Buletin Sumber Daya Geologi Vol. 17 No. 3 (2022): Buletin Sumber Daya Geologi Vol. 17 No. 2 (2022): Buletin Sumber Daya Geologi Vol. 17 No. 1 (2022): Buletin Sumber Daya Geologi Vol. 16 No. 3 (2021): Buletin Sumber Daya Geologi Vol. 16 No. 2 (2021): Buletin Sumber Daya Geologi Vol. 16 No. 1 (2021): Buletin Sumber Daya Geologi Vol. 15 No. 3 (2020): Buletin Sumber Daya Geologi Vol. 15 No. 2 (2020): Buletin Sumber Daya Geologi Vol. 15 No. 1 (2020): Buletin Sumber Daya Geologi Vol 15 No 1 (2020): Buletin Sumber Daya Geologi Vol 14, No 3 (2019): Buletin Sumber Daya Geologi Vol. 14 No. 3 (2019): Buletin Sumber Daya Geologi Vol. 14 No. 2 (2019): Buletin Sumber Daya Geologi Vol 14, No 2 (2019): Buletin Sumber Daya Geologi Vol. 14 No. 1 (2019): Buletin Sumber Daya Geologi Vol 14, No 1 (2019): Buletin Sumber Daya Geologi Vol 13 No 3 (2018): Buletin Sumber Daya Geologi Vol 13, No 3 (2018): Buletin Sumber Daya Geologi Vol. 13 No. 3 (2018): Buletin Sumber Daya Geologi Vol 13 No 2 (2018): Buletin Sumber Daya Geologi Vol. 13 No. 2 (2018): Buletin Sumber Daya Geologi Vol 13, No 2 (2018): Buletin Sumber Daya Geologi Vol 13, No 1 (2018): Buletin Sumber Daya Geologi Vol 13 No 1 (2018): Buletin Sumber Daya Geologi Vol. 13 No. 1 (2018): Buletin Sumber Daya Geologi Vol 12, No 3 (2017): Buletin Sumber Daya Geologi Vol 12 No 3 (2017): Buletin Sumber Daya Geologi Vol. 12 No. 3 (2017): Buletin Sumber Daya Geologi Vol 12, No 2 (2017): Buletin Sumber Daya Geologi Vol 12 No 2 (2017): Buletin Sumber Daya Geologi Vol. 12 No. 2 (2017): Buletin Sumber Daya Geologi Vol 12, No 1 (2017): Buletin Sumber Daya Geologi Vol 12 No 1 (2017): Buletin Sumber Daya Geologi Vol. 12 No. 1 (2017): Buletin Sumber Daya Geologi Vol 11 No 3 (2016): Buletin Sumber Daya Geologi Vol. 11 No. 3 (2016): Buletin Sumber Daya Geologi Vol 11, No 3 (2016): Buletin Sumber Daya Geologi Vol 11 No 2 (2016): Buletin Sumber Daya Geologi Vol. 11 No. 2 (2016): Buletin Sumber Daya Geologi Vol 11, No 2 (2016): Buletin Sumber Daya Geologi Vol 11 No 1 (2016): Buletin Sumber Daya Geologi Vol. 11 No. 1 (2016): Buletin Sumber Daya Geologi Vol 11, No 1 (2016): Buletin Sumber Daya Geologi Vol 10, No 3 (2015): Buletin Sumber Daya Geologi Vol. 10 No. 3 (2015): Buletin Sumber Daya Geologi Vol 10 No 3 (2015): Buletin Sumber Daya Geologi Vol. 10 No. 2 (2015): Buletin Sumber Daya Geologi Vol 10 No 2 (2015): Buletin Sumber Daya Geologi Vol 10, No 2 (2015): Buletin Sumber Daya Geologi Vol. 10 No. 1 (2015): Buletin Sumber Daya Geologi Vol 10 No 1 (2015): Buletin Sumber Daya Geologi Vol 10, No 1 (2015): Buletin Sumber Daya Geologi Vol 10, No 1 (2015): Buletin Sumber Daya Geologi Vol 9, No 3 (2014): Buletin Sumber Daya Geologi Vol 9 No 3 (2014): Buletin Sumber Daya Geologi Vol. 9 No. 3 (2014): Buletin Sumber Daya Geologi Vol 9 No 2 (2014): Buletin Sumber Daya Geologi Vol 9, No 2 (2014): Buletin Sumber Daya Geologi Vol. 9 No. 2 (2014): Buletin Sumber Daya Geologi Vol 9, No 1 (2014): Buletin Sumber Daya Geologi Vol 9 No 1 (2014): Buletin Sumber Daya Geologi Vol. 9 No. 1 (2014): Buletin Sumber Daya Geologi Vol 8 No 3 (2013): Buletin Sumber Daya Geologi Vol. 8 No. 3 (2013): Buletin Sumber Daya Geologi Vol 8, No 3 (2013): Buletin Sumber Daya Geologi Vol 8 No 2 (2013): Buletin Sumber Daya Geologi Vol 8, No 2 (2013): Buletin Sumber Daya Geologi Vol. 8 No. 2 (2013): Buletin Sumber Daya Geologi Vol 8 No 1 (2013): Buletin Sumber Daya Geologi Vol. 8 No. 1 (2013): Buletin Sumber Daya Geologi Vol 8, No 1 (2013): Buletin Sumber Daya Geologi Vol 7 No 3 (2012): Buletin Sumber Daya Geologi Vol 7, No 3 (2012): Buletin Sumber Daya Geologi Vol. 7 No. 3 (2012): Buletin Sumber Daya Geologi Vol 7 No 2 (2012): Buletin Sumber Daya Geologi Vol. 7 No. 2 (2012): Buletin Sumber Daya Geologi Vol 7, No 2 (2012): Buletin Sumber Daya Geologi Vol 7 No 1 (2012): Buletin Sumber Daya Geologi Vol 7, No 1 (2012): Buletin Sumber Daya Geologi Vol. 7 No. 1 (2012): Buletin Sumber Daya Geologi Vol 6 No 3 (2011): Buletin Sumber Daya Geologi Vol 6, No 3 (2011): Buletin Sumber Daya Geologi Vol. 6 No. 3 (2011): Buletin Sumber Daya Geologi Vol 6 No 2 (2011): Buletin Sumber Daya Geologi Vol 6, No 2 (2011): Buletin Sumber Daya Geologi Vol. 6 No. 2 (2011): Buletin Sumber Daya Geologi Vol 6, No 1 (2011): Buletin Sumber Daya Geologi Vol 6 No 1 (2011): Buletin Sumber Daya Geologi Vol. 6 No. 1 (2011): Buletin Sumber Daya Geologi Vol 5, No 3 (2010): Buletin Sumber Daya Geologi Vol. 5 No. 3 (2010): Buletin Sumber Daya Geologi Vol 5 No 3 (2010): Buletin Sumber Daya Geologi Vol 5, No 2 (2010): Buletin Sumber Daya Geologi Vol. 5 No. 2 (2010): Buletin Sumber Daya Geologi Vol 5 No 2 (2010): Buletin Sumber Daya Geologi Vol. 5 No. 1 (2010): Buletin Sumber Daya Geologi Vol 5 No 1 (2010): Buletin Sumber Daya Geologi Vol 5, No 1 (2010): Buletin Sumber Daya Geologi Vol 4, No 3 (2009): Buletin Sumber Daya Geologi Vol. 4 No. 3 (2009): Buletin Sumber Daya Geologi Vol 4 No 3 (2009): Buletin Sumber Daya Geologi Vol 4, No 2 (2009): Buletin Sumber Daya Geologi Vol. 4 No. 2 (2009): Buletin Sumber Daya Geologi Vol 4 No 2 (2009): Buletin Sumber Daya Geologi Vol. 4 No. 1 (2009): Buletin Sumber Daya Geologi Vol 4 No 1 (2009): Buletin Sumber Daya Geologi Vol 4, No 1 (2009): Buletin Sumber Daya Geologi Vol. 3 No. 3 (2008): Buletin Sumber Daya Geologi Vol 3 No 3 (2008): Buletin Sumber Daya Geologi Vol 3, No 3 (2008): Buletin Sumber Daya Geologi Vol. 3 No. 2 (2008): Buletin Sumber Daya Geologi Vol 3 No 2 (2008): Buletin Sumber Daya Geologi Vol 3, No 2 (2008): Buletin Sumber Daya Geologi Vol 3, No 1 (2008): Buletin Sumber Daya Geologi Vol. 3 No. 1 (2008): Buletin Sumber Daya Geologi Vol 3 No 1 (2008): Buletin Sumber Daya Geologi Vol. 2 No. 3 (2007): Buletin Sumber Daya Geologi Vol 2 No 3 (2007): Buletin Sumber Daya Geologi Vol 2, No 3 (2007): Buletin Sumber Daya Geologi Vol. 2 No. 2 (2007): Buletin Sumber Daya Geologi Vol 2 No 2 (2007): Buletin Sumber Daya Geologi Vol 2, No 2 (2007): Buletin Sumber Daya Geologi Vol. 2 No. 1 (2007): Buletin Sumber Daya Geologi Vol 2 No 1 (2007): Buletin Sumber Daya Geologi Vol 2, No 1 (2007): Buletin Sumber Daya Geologi Vol 1 No 1 (2006): Buletin Sumber Daya Geologi Vol 1, No 1 (2006): Buletin Sumber Daya Geologi Vol. 1 No. 1 (2006): Buletin Sumber Daya Geologi More Issue