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All Journal Jurnal Pengembangan Energi Nuklir Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir
I Gde Sukadana
PTBGN-BATAN
Decision Sciences, Operations Research & Management Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Social Sciences

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Land Suitability Determination of NPP’s Potential Site in East Kalimantan Coastal Using GIS Heni Susiati; I Gde Sukadana; Yarianto Sugeng Budi Susilo; Yuliastuti Yuliastuti
Jurnal Pengembangan Energi Nuklir Vol 21, No 1 (2019): Juni 2019
Publisher : Pusat Kajian Sistem Energi Nuklir, Badan Tenaga Nuklir Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/jpen.2019.21.1.5434

Abstract

Nuclear Power Plant (NPP) site selection is the key phase of the nuclear power plant process and significantly influence the construction cost and safety. In order to prepare for nuclear power programs in East Kalimantan province, Geographical Information System (GIS) analysis along the coast of East Kalimantan province, especially the Berau district, East Kutai, Kutai Kartanegara, Samarinda, Balikpapan, Penajam Paser Utara and the Paser. The research purpose is to find suitable site for nuclear power plants location using spatial analysis and modeling. The potential Nuclear Power Plant (NPP) site is based on several criteria, such as: geology, slope, soil type, land use, hydrology, and existing road network. Based on the weighting and ranking results using GIS application: there are three locations serve as the potential NPP sites are obtained Kutai Kartanegara and Kutai Timur regency. Next, land suitability analysis is done by using GIS application which shows potential sites suitable general and specific criteria of the site evaluation process development.
Indikasi Mineralisasi Tipe Porfiri di Daerah Sumbersari, Kompleks Pengunungan Kulon Progo, Purworejo, Indonesia Okki Verdiansyah; Damas Muharif; I Gde Sukadana
EKSPLORIUM Vol 41, No 2 (2020): November 2020
Publisher : Pusat Teknologi Bahan Galian Nuklir - BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2020.41.2.5959

Abstract

ABSTRAK Pegunungan Kulon Progo merupakan produk magmatisme Busur Sunda-Banda tersusun atas formasi andesit tua. Daerah Sumbersari merupakan bagian dari gunung api Gajah, batuan gunung api tertua Kulon Progo. Indikasi mineralisasi tipe porfiri ditemukan di daerah ini sehingga menarik untuk diteliti lebih lanjut. Penelitian ini bertujuan untuk mengetahui potensi keterdapatan mineral logam berharga (Cu-Au). Metode penelitian yang digunakan adalah pemetaan geologi, analisis petrografi dan mikroskopi bijih, serta analisis geokimia menggunakan XRF dan ICP-MS. Geologi daerah penelitian terletak pada fasies sentral-proksimal Khuluk Gajah, terususun atas intrusi mikrodiorit, mikrodiorit kuarsa, andesit, andesit basaltik-diorit, dan batugamping. Alterasi hidrotermal berkembang pada batuan beku diorit, mikrodiorit, dan sebagian pada andesit. Alterasi hidrotermal dibagi menjadi beberapa kelompok, yaitu ilit-serisit±biotit sekunder, epidot-aktinolit-kalsit±ilit, epidot-kalsit±ilit, dan ilit-serisit±kuarsa. Beberapa fase mineralisasi berkembang, antara lain fase epidot-aktinolit yang diikuti mineralisasi magnetit-kalkopirit, fase biotit-magnetit-kalkopirit-bornit, dan fase akhir serisit-mineral lempung-pirit menggantikan keseluruhan sistem. Analisis geokimia pada batuan teralterasi menunjukan indikasi mineralisasi Cu-Au dengan kadar 491–1447 ppm (0,14%) Cu dan 0,02–0,3 ppm Au dengan rasio elemen Cu:Au adalah 1,01. Karakter geokimia menunjukkan adanya korelasi kuat Cu terhadap Au.ABSTRACT Kulon Progo Mountain is Sunda-Banda Arc magmatism product composed of an old andesite formation. Sumbersari Area is part of the Gajah volcanic, which is the oldest rock of Kulon Progo volcanics. Indication of porphyry type mineralisation has been found in the area which makes the area interested for further research. The research methodologies are geological mapping, petrography and ore microscopy, and geochemical analysis using XRF and ICP-MS. Geology of the area located in central-proximal facies of Khuluk Gajah, consist of microdiorite, quartz-microdiorite, andesite, basaltic-dioritic andesite intrusions, and limestone. Hydrotermal alteration is developing into certain groups like illite-sericite ± secondary biotite, epidote-actinolite-calcite ± illite, epidot-calcite ± illite, and illite-sericite ± quartz. Some mineralisation phases are developed like epidote-actinolite followed by magnetite-chalcopyrite mineralisation, biotite-magnetite-chalcopyrite-bornite phase and the late phase of sericite-clay-pyrite replacing the entire system. Geochemical analysis on altered rocks show Cu-Au mineralisation indication ranging from 491-1,447 ppm (0.14%) and 0.02-0.3 ppm respectively, with Cu:Au ratio is 1.01. Geochemical characteristic shows strong correlation of Cu to Au.
Pola Tahanan Jenis dan Konduktivitas Batuan Mengandung Mineral Radioaktif di Botteng dan Takandeang, Mamuju, Sulawesi Barat Adi Gunawan Muhammad; Frederikus Dian Indrastomo; I Gde Sukadana
EKSPLORIUM Vol 38, No 1 (2017): Mei 2017
Publisher : Pusat Teknologi Bahan Galian Nuklir - BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (747.721 KB) | DOI: 10.17146/eksplorium.2017.38.1.3540

Abstract

AbstrakKegiatan penyelidikan umum mineral radioaktif di daerah Mamuju, Sulawesi Barat merupakan tindak lanjut dari hasil pengukuran radioaktivitas lingkungan yang menunjukkan adanya nilai radioaktivitas tinggi. Kandungan mineral radioaktif yang cukup tinggi ditemukan antara lain di Desa Botteng dan Desa Takandeang yang tersusun oleh batuan berkomposisi leusit-basal tetapi karakteristik bawah permukaan daerah ini belum diketahui. Untuk mengetahui karakteristik geologi bawah permukaan, terkait dengan mineralisasi Uranium dan Thorium di daerah Botteng dan Takandeang, pengukuran geofisika menggunakan metode tahanan jenis dan polarisasi terimbas (Induced Polarization/IP) dilakukan. Pengukuran tersebut dilakukan menggunakan konfigurasi Wenner dan dipole-dipole, dimulai dengan pembuatan enam jalur pengukuran, masing-masing tiga jalur: GF/BTGY-01, GF/BTGK-02, dan GF/BTGK-04 di Botteng, dan tiga jalur lainnya: GF/TKDK-01, GF/TKDK-07, dan GF/TKDY-06 di Takandeang. Pengukuran dilakukan dengan memotong arah kemenerusan anomali radiometri permukaan. Hasil pengukuran menunjukkan keterdapatan anomali berada pada sebaran batuan autobreksia yang terlihat jelas di lokasi GF/TKDY-6, GF/TKDK-07, dan GF/BTGK-04. Beberapa indikasi mineralisasi di permukaan teridentifikasi di penampang GF/BTGK-02 dan GF/TKDK-01, dicirikan dengan anomali-anomali chargeabilitas >25,14 ms di lintasan GF/BTGK-02 dan 81,4 ms di GF/TKDK-01. Anomali yang signifikan direkomendasikan sebagai lokasi pemboran. AbstractThe general investigation activities of radioactive minerals in Mamuju Area, West Sulawesi is a respon of the environmental radioactivity measurement result, which shows the existence of high radioactivity value. High radioactive mineral content found in Botteng and Takandeang Villages. From the outcrops, they composed of leucite-basalt rocks; meanwhile the subsurface characteristics of this area are unknown. To characterize the subsurface geology, related to uranium and thorium mineralization in Botteng and Takandeang area, geophysical measurement conducted using resistivity and Induced Polarization (IP) methods. The measurements carried out using Wenner and dipole-dipole configurations. The measurements started with the creation of six measurement paths where three lines: GF/BTGY-01, GF/BTGK-02, and GF/BTGK-04 are in Botteng and three other lines: GF/TKDK-01, GF/TKDK-07 and, GF/TKDY-06 are in Takandeang. Measurements conducted by crossing the surface radiometric anomaly distribution. The result showed anomaly occurences on autobreccia distribution in GF/TKDY-6, GF/TKDK-07, and GF/BTGK-04 locations. Several mineralization indication on surface identified in GF/BTGK-0, and GF/TKDK-01 sections, charaterized by chargeability anomalies more than 25.14 ms and 81.4 ms respectively. All significant anomalies are recomended as drilling location.
Identifikasi Pola Struktur Geologi Sebagai Pengontrol Sebaran Mineral Radioaktif Berdasarkan Kelurusan Pada Citra Landsat-8 di Mamuju, Sulawesi Barat Frederikus Dian Indrastomo; I Gde Sukadana; Suharji Suharji
EKSPLORIUM Vol 38, No 2 (2017): November 2017
Publisher : Pusat Teknologi Bahan Galian Nuklir - BATAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1678.684 KB) | DOI: 10.17146/eksplorium.2017.38.2.3874

Abstract

AbstrakDaerah Mamuju dan sekitarnya tersusun atas batuan gunung api dengan komposisi mineral mengandung unsur radioaktif seperti uranium (U) dan thorium (Th). Konsentrasi unsur radioaktif di daerah ini mencapai 1.529 ppm eU dan 817 ppm eTh. Mineral-mineral radioaktif yang teridentifikasi terdiri dari thorianite, davidite, gummite, dan autunite. Aktivitas tektonika kemunculan gunung api menyebabkan terbentuknya struktur-struktur geologi yang mengontrol pembentukan kompleks gunung api dan mineralisasi U-Th di daerah tersebut. Identifikasi struktur geologi regional dan rinci di lapangan sangat sulit dilakukan karena vegetasi yang lebat dan tingkat pelapukan yang tinggi. Kelurusan hasil interpretasi dari citra Landsat-8 merupakan manifestasi keberadaan struktur geologi yang mengontrol keberadaan U dan Th. Analisis kelurusan punggung bukit menggunakan formula Sastratenaya digunakan untuk mengetahui umur dan kronologi kelurusan yang terbentuk. Pengukuran laju dosis di daerah penelitian menunjukkan kecenderungan arah sebaran anomali radioaktivitas berarah tenggara–baratlaut. Hasil analisis menggunakan formula Sastratenaya menunjukkan bahwa struktur yang terbentuk adalah struktur berumur relatif tua dan memiliki arah dominan tenggara–baratlaut (N 140–150o E). Berdasarkan interpretasi kelurusan, arah dominan memiliki kemiripan dengan arah sebaran gunung api dan sebaran radioaktivitas. Struktur yang mengontrol pembentukan gunung api dan terkait dengan mineralisasi U dan Th secara umum merupakan struktur berarah tenggara–baratlaut dan terbentuk bersamaan dengan proses mineralisasi U dan Th. AbstractMamuju area and its surrounding are composed of volcanic rock containing uranium (U) and thorium (Th) elements. Radioelements concentrations in the area reach 1,529 ppm eU and 817 ppm eTh. Radioactive minerals identified in the area are thorianite, davidite, gummite, and autunite. The geological structures were formed by tectonic activities which controlled the creation of volcanic complex and U-Th mineralization in the complex. Identification of geological structure in the field is very difficult due to densely vegetation and higly degree of weathering. The interpreted lineaments from Landsat-8 imagery are the manifestation of geological structures which have controlled the existence of U and Th. Lineaments analysis using Sastratenaya formula is used to obtain the relative age and chronologies of the lineaments. Dose rate measurements in the area show the trend of radioactivitiy anomalies are trending northwest–southeast. The Sastratenaya formula results the formed structures are relatively older and dominantly directing northwest–southeast (N 140o–150o E). Based on the linement interpretation, the dominant direction has similliarity with volcanic and radioactivity distribution. Structures which controlling the volcanic formation and related to U and Th mineralization generally are the northwest–southeast trending structures, which were created along with U and Th mineralization.
Co-Authors Adi Gunawan Muhammad Damas Muharif Frederikus Dian Indrastomo Frederikus Dian Indrastomo Heni Susiati Okki Verdiansyah Suharji Suharji Yarianto Sugeng Budi Susilo Yuliastuti Yuliastuti