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Journal : Eksplorium : Buletin Pusat Pengembangan Bahan Galian Nuklir

 1 
Mobilitas Uranium pada Endapan Sedimen Sungai Aktif di Daerah Mamuju, Sulawesi Barat Mu’awanah, Frida Rosidatul; Priadi, Bambang; Widodo; Sukadana, I Gde; Andriansyah, Rian
EKSPLORIUM Vol. 39 No. 2 (2018): NOVEMBER 2018
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2018.39.2.4953

Abstract

Mamuju is an area that has a high dose rate (radioactivity) value. The research area consists of 6 sectors namely Ahu, Orobatu, Takandeang, Botteng, Pangasaan, and Taan Sector. Lithological distribution does not represent the distribution of uranium; therefore geochemical method is needed to observe the distribution of uranium in the drainage system. The aim of this research is to provide an overview of the mobility and distribution of uranium in the drainage system using stream sediment. Uranium mobility analysis uses labile percent obtained from the ratio of total uranium and labile uranium, the total uranium value obtained from the measurement of X-Ray fluorescence spectrometry and the value of labile uranium obtained from measurement of labile fluorimetry. The sample taken from 4 potential areas based on radiometric value Map. The result of analysis shows that Ahu Sector has labile uranium anomaly >113.44 ppm, Pangasaan Sector with labile uranium anomaly >168.63 ppm, Takandeang Sector with uranium labile anomaly values >74.36 ppm, and Botteng Sector with uranium labile anomaly >84.23 ppm. The anomaly types identified from two sectors, namely Ahu Sector anomaly is related to the precipitation of dissolved uranium hydrolysates in stream deposit originating from Ahu lava and Tapalang breccia, while Takandeang Sector anomaly is related to the enrichment of in situ uranium in soil and Takandeang lava.
Identifikasi Keterdapatan Mineral Radioaktif pada Urat-Urat Magnetit di Daerah Ella Ilir, Melawi, Kalimantan Barat Ngadenin; Indrastomo, Frederikus Dian; Widodo; Widana, Kurnia Setiawan
EKSPLORIUM Vol. 40 No. 1 (2019): MEI 2019
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2019.40.1.5350

Abstract

Ella Ilir administratively located in Melawi Regency, West Kalimantan. Regional geology of Ella Ilir area is composed of metamorphic rocks in Triassic–Carboniferous age which are intruded by Jurassic and Cretaceous granitic rocks. Radioactive minerals occurences in the area are indicated by magnetite veins radioactivities on Triassic to Carboniferous metamorphic rocks whose values range from 1,000 c/s to 15,000 c/s. Goal of the study is to determine the type of ore mineral deposits and to identify the presence of radioactive mineral in magnetite veins in Ella Ilir area. The methods used are geological mapping, radioactivity measurements, analysis on uranium grades, and mineragraphy analysis of severe magnetite veins samples. Lithologies of the study area are composed by biotite quartzite, metatuff, metasilt, metapellite, biotite granite, and ryolite. The east-west sinistral fault and the north-south dextral fault are the developed fault structures in this area. Mineral composition of magnetite veins are consists of iron ore, sulfide, and radioactive minerals. Iron ore mineral consists of magnetite, hematit, and goetite. Sulfide minerals consist of pyrite, pirhotite, and molybdenite, while radioactive minerals consist of uraninite and gummite. The occurences of magnetite veins are controlled by lithology and geological structures. The magnetite veins in metasilt are thick (1.5–5 m), filled the fractures in the fault zone. Meanwhile, the magnetite veins in metapellite are thinner (milimetric–centimetric), filled the fractures that are parallel to the schistocity. The ore deposits in the study area are iron ore deposits or magnetite ore deposits formed by magmatic hydrothermal processes.
Karakterisasi Hidrogeologi Daerah Sekitar Tapak PLTN di Bengkayang, Kalimantan Barat Muhammad, Adi Gunawan; Fauzi, Rachman; Karunianto, Adhika Junara; Cakrabuana, Wira; Widodo
EKSPLORIUM Vol. 42 No. 2 (2021): NOVEMBER 2021
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17146/eksplorium.2021.42.2.6479

Abstract

Site evaluation is an important phase of site selection for commercial-scale nuclear power plants (NPP) in Indonesia. Geotechnical and radioactive material dispersion aspects are some of the aspects which are assessed in site evaluation under provisions of laws and regulations. To support those aspect evaluations, it is necessary to conduct hydrogeological characterization in the vicinity of the NPP site. The purpose of this study is to determine the hydrogeological characteristic of the vicinity of the NPP site in Bengkayang Regency, West Kalimantan Province based on geological and geophysical aspects. The methods of this study consist of geomorphological mapping, geological mapping, hydrogeological mapping, geoelectric measurement, and integrated analysis. The study area consists of three morphological units: alluvial plain, isolated hills, and coastal plain. Stratigraphically, the lithology units of the study area, from the oldest to the youngest, consist of andesite, granodiorite, diorite, quartz sand deposits, coastal deposits, and alluvial deposits. The geophysical measurement used is the geoelectric method which is conducted at 12 electrode arrays with 470 m length and spacing of 10 m. In the geoelectrical section, it can be seen that several anomalies can be interpreted as the fractured body of igneous rocks or the diorite intrusion in andesite. These anomaly values are ranged from 300 Wm to >8000 Wm. The relatively low resistivity values (<30 Wm) are interpreted as water saturated-alluvial deposits that could have a thickness of ±100 m. There are three hydrogeological units in the study area: aquifers in which flow is intergranular with high permeability, aquifers in which flow is intergranular with moderate permeability, and aquifug of local importance. Generally, the groundwater in the study area flows from SSW to NNE.
Characterization of Radioactive and Rare Earth Elements in Heavy Minerals from River Sediments in Marau Region, Ketapang, West Kalimantan Pratiwi, Fadiah; Rachael, Yoshi; Widodo; Fauzi, Rachman; Madyaningarum, Nunik; Adimedha, Tyto Baskara; Indrastomo, Frederikus Dian; Sukadana, I Gde
EKSPLORIUM Vol. 45 No. 1 (2024): MAY 2024
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/eksplorium.2024.6971

Abstract

Alluvium deposits from the Kendawangan River located in Marau, Ketapang, West Kalimantan have been known for their radioactive and rare earth mineral potential. In this paper, heavy minerals taken from alluvium deposits will be characterized to determine the elemental distribution of uranium, thorium, and rare earth elements in each mineral and their mineralogical composition. The samples are taken by panning and prepared using the flotation method to obtain heavy mineral concentrates. Geochemical analysis was carried out using a Bruker M4 Tornado plus Micro-XRF and continued with mineralogical analysis using AMICS (Advanced Mineral Identification and Characterization System) software. It was found that the distribution of heavy minerals from the sand samples was dominated by manganoan ilmenite, ilmenite, rutile, zircon, magnetite, and monazite, as well as thorite, cassiterite, xenotime, allanite, and other minerals in small quantities. Uranium, thorium, and rare earth elements are found in monazite, thorite, xenotime, zircon, and allanite.
Co-Authors ABDUL MUNIF Achmad Irchamni Adam Punca Putra Pinaria Ade Irvan Tauvana Adhika Junara Karunianto Adi Gunawan Muhammad Adimedha, Tyto Baskara Agung Riansa, Dimas Agus Muji Santoso Agus PURWANTARA Agustin Sukarsono, Agustin Agustina Putri Reistanti Ajie, Hamidillah Alamsyah, Wan Ali nur Fatoni ALI NURMANSYAH Ali Yusuf Alisha Prameswari Ganandi Alnopri Alzami, Farrikh Amara, Khansa Anang Efendi Andika Rifki Aprilian Andoy, Aldis S Andriansyah, Rian Ardath Prahara Setyan Ari Surya Sukarno Arief Raharjo, Hafiez Aris, Tomi Asmoro, Purwandito Tulus Atmaja Johny Artha, I Ketut Auriga Putri Faradilla Aziz Syahputro, Razi Aziz Yulianto Pratama Azizah Khoiro Nisah balqis Bambang Gonggo Murcitro Bambang Prasetya Adhi Bambang Priadi Bayu Dwi Welasasih Betty Lukiati Bhayu Aji Seno Budi Santosa, Achadi Budi, Ferri Stya Bulandari, Desty Cakrabuana, Wira Cherish Okcavia, Salsabila Deki Riana Devi Ratnasari Dwi Cahyo, Muhamad Prasetio Dwi Suchisty Dwi Wibowo Dyah Ika Krisnawati Edi Susanto Efendi, Edi Eki Nugraha Eko Suprijono Elvi Amir Endang Wahyuni Erny Roesminingsih Fahira kiyyun Nur Misbah Fahrurrozi Fakhriyani Fathiah Fatika La Viola Ifanka Fauzi, Rachman Febrianto Widyoutomo Fiky Ariestia Filsa, Nisfal Frederikus Dian Indrastomo, Frederikus Dian Giyanto Guntur Gusmara, Herry Hamidillah Ajie Hana Agita Mardiana Hanifa Dian Permatasari Hariyoto, Hariyoto Hartanto, Ageng Hasanah, Enung Henry Sudianto Heryanto Susilo HESTI PUJIwATI Hidayah, Dian I Gde Sukadana I Made Sudiana Indah Prabawati, Nurul Jarwo Jeni Joni Hidayat, Joni Ketut Atmaja Johny Artha Khairul Hudha Nasution Kikin H Mutaqin Krisnawati, Dyah Ika Kurnia Setiawan Widana Kurnia, Deva Arya Leni Lina Rosmayanti Lisdawati, Ariani Listyaningrum, Trisna Avi Lukman Nulhakim M. Ficky Duskarnaen M. Safrodin M. Syafiq Roikhan Maulana Mar'atus Solihah, Rizka Ayu Masdar Masyhar MEITY SURADJI SINAGA Melkisedek Melvien Zainul Asyiqien Mohamad Fajar Farid Amrulloh Mohammad Amin Mohammad Saeful Amin Mokhamad Is Subekti Monica Monita Nur Shabrina Muh. Tajab muhammad alfi syahrin Muhammad Ilham Aziz MUHAMMAD IQBAL TAWAQAL Muhammad Jamal Muhammad Nur Afandy Muhammad Oktoda Noorrohman Muhammad Zulkifli Mulyani, Yayu Mundir, Ahmad Murien Nugraheni Muslich Muslich, Muslich Mustakim Mu’awanah, Frida Rosidatul Napiudin Negara, Akbar Kusuma Neng Ayu Herawati Ngadenin Ningtias, Dieta Wahyu Asry Novida, Irma Nugraha, Andronicus Christian Nulhakim, Lukman Nunik Madyaningarum, Nunik Nur Fadlilah, Reina Iranti Nuraini Nurhidayatuloh, Farhan Nurhikmah Mutmainna Sari Nurliyani Nurliyani NURUL AZIZAH Nurul Mawaddah Nurul Nisa Habibah Nurul Setiani Padhi, Bambang Prasetya Prasetya Adhi, Bambang Pratiwi, Ambar Pratiwi, Fadiah Purnama Sari, Citra Purwandito, Meilandy Putri, Elsa Lolita Rachael, Yoshi Rachmanu, Fatkur Ratna Wirawati Rosyida Ratna Wirawati Rosyida Reni Resa Yolanda Resa Yolanda Retnaningsih, Endang Rianto Ridho, Akhmad Rizky Novridoni Rohayani, Mei Roza Yuniza Putri rudiyanto Saepurohman, Ferdi Saifullah Azhar Saifulloh Azhar Samidi Sanyoto Saputri, K. W. Satria Pradana Rizki Yulianto Satria Pradana Rizky Yulianto Satyaguna Rakhmatulloh Septiana Anggraini, Septiana Shafa Sya’airillah Shinta Fadhilahsari Sigit Sudjatmiko, Sigit Sili Sabon, Simon Sirateman, Selamat Sistiani, Catur Rahma Siti Rohmah Siti Rosyidatul Ulwiyah SJAFIATUL MARDLIYAH Soeleman, Arief SRI HENDRASTUTI HIDAYAT Suhadi Suharjo, Usman Kris Joko Sukarjo, Entang Inoriah Sulton Ibrahim Sumaryoto Supanjani Supatman Supriadi Supriadi, Iyus Suryo Wiyono Susanto, Hendi Suwarno, Panji Swardiantara Silalahi syafrizal Syafrizal Fuady Tauvana, Ade Tayane, Rosalin T Thoriq Nurchaidir Tulus Asmoro, Purwandito Tunjung Pamekas, Tunjung Untari Untari Utami, Kartika Warsito Wibowo Yunanto, Prasetyo Wibowo, Nanang Roni Widi Amaria Wijaya, Aji Wira, Dimas Wiwin Yulianingsih wiyanto, Agung Wuri Prameswari Yudhistira, Arga YULIATI Zahra, Atiqah Luthfi Anawati Zakariyah, M Fahmi Zikri, Ahmad Zulkurnia, Ari zumaroh, siti