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INDONESIA
Indonesian Mining Journal
Published by PUSLITBANG Teknologi Mineral dan Batubara
ISSN : 08549931     EISSN : 25278797     DOI : -
Core Subject : Science, Social, Engineering,
Chemical Engineering, Chemistry & Bioengineering Earth & Planetary Sciences Energy Engineering Environmental Science
This Journal is published periodically two times annually : April and October, containing papers of research and development for mineral and coal, including exploration, exploitation, processing, utilization, environment, economics and policy. The editors only accept relevant papers with the substance of this publication.
Arjuna Subject : -
Articles 264 Documents
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PROBABILITAS LONGSOR TIMBUNAN DI AREA IN PIT DUMP ASAM TIMUR DAERAH KONSESI PT ARUTMIN INDONESIA TAMBANG ASAMASAM, KALIMANTAN SELATAN Fahrezi, Muhammad Akmal; Zakaria, Zulfiadi; Khoirullah, Nur; Laksana, Prima
Indonesian Mining Journal Vol 28 No 1 (2025): Indoneisan Mining Journal, April 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol28.No1.2025.1628

Abstract

Open pit mining involves excavation of soil and overburden, which requires a well-planned disposal area to maintain stockpile stability. This is achieved through an analysis of soil bearing capacity and slope stability. The research was conducted at the ASTIM In Pit Dump (IPD) using actual materials. Data were obtained from direct shear tests and physical properties tests, then statistically analyzed to determine the average value, standard deviation, and minimum and maximum relative values. These data were subsquetly input into geotechnical software to perform a slope stability analysis under pessimistic conditions, including water-saturated slopes with a horizontal seismicity coefficient of 0.045. The simulation results did not meet the stability criteria, yielding a safety factor of 0.647. Therefore, engineering design modifications were necessary, including widening the slope angle to 7.61°, consisting of six steps with a level height of 5 meters, a width of 30 meters, and a slope angle of 25°. This redesign resulted in a safety factor (SF) of 1.254 which meets slope stability criteria based on Bowles (1989) and a probability of failure (PoF) of 4.1%, in accordance with the Decree of the Minister of Energy and Mineral Resources No. 1827 K/30/MEM/2018.
SEBARAN DAN KORELASI MINERAL KRITIS PADA ENDAPAN SKARN Pb-Zn DI DESA CIHAUR, KABUPATEN SUKABUMI, JAWA BARAT Rizal, Khairu; Nurkhamim; Idrus, Arifudin
Indonesian Mining Journal Vol 28 No 1 (2025): Indoneisan Mining Journal, April 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol28.No1.2025.1655

Abstract

This research investigates ore samples from Cihaur Village, Sukabumi District, West Java, which exhibit significant skarn alteration in limestone, is examined for its petrographic and mineragraphic features. Secondary minerals identified include pyroxene, garnet, calcite, and opaque minerals, while the primary ore minerals are chalcopyrite (CuFeS2), galena (PbS), and sphalerite (ZnS). Five samples were analyzed geochemical analysis using the ICP-MS method to assess the concentration of important elements including Pb, Zn, Cu, Ag, Sb, Bi, Cd, Mg, Al, Ca, Fe, and As. Element distribution patterns were examined using spider diagrams, providing insight into environmental gradients influencing mineral exploration. The study revealed a high positive correlation between Pb and Zn, suggesting co-deposition in sulfide mineralization. Pb also correlates strongly with Ag and Sb. This study confirms the considerable economic potential of the Sukabumi skarn deposits for Pb, Zn, Cu, and precious metals such as Ag. Exploration value is increased when essential minerals like Sb and Cd are present. Variations in geochemical conditions indicate the influence of magmatic intrusions and hydrothermal activity on element distribution. These results provide a solid foundation for further exploration to delineate mineralization zones in the region
Index of Abstract
Indonesian Mining Journal Vol 28 No 1 (2025): Indoneisan Mining Journal, April 2025
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

IMPACT OF ILLEGAL GOLD MINING IN JAMBI, INDONESIA Wibowo, Yudha Gusti; Ramadan, Bimastyaji Surya; Maryani, Anis Tatik; Rosarina, Desy; Arkham, La Ode
Indonesian Mining Journal Vol 25 No 1 (2022): INDONESIAN MINING JOURNAL, Vol. 25 No. 1, April 2022
Publisher : Balai Besar Pengujian Mineral dan Batubara tekMIRA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30556/imj.Vol25.No1.2022.1271

Abstract

Illegal gold mining caused various environmental damages in the world. Indonesia is one of the countries with abundant mineral reserves, especially Jambi Province. Jambi has much of natural resources, such as coal and gold. Unfortunately, the management of these natural resources has not been appropriately managed, which has resulted in much illegal gold mining. Illegal mining activities have caused environmental damage, mainly decreased water quality and changed landscapes. This paper explains the illegal mining activities at Jambi Province, including its history, socio-economic and environmental impacts, as well as recent technologies to reduce the environmental damage. Quantitative and qualitative methods were used in this research, including interviews, questionnaires, and laboratory measurements. The results showed that the people of Sarolangun, Bungo, and Tebo were aware that their illegal gold mining activities caused environmental damage. However, economic conditions and insufficient employment opportunities made unlawful gold miners have no other choice. Illegal gold mining activities have also shifted people's livelihoods who previously worked as farmers.

Page 27 of 27 | Total Record : 264

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