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All Journal JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI Indonesian Journal of Science and Technology EMARA : Indonesian Journal of Architecture Sistem : Jurnal Ilmu-Ilmu Teknik Jurnal EMT KITA Jurnal Teknologi Pendidikan Madrasah Jurnal Pertahanan : Media Informasi tentang Kajian dan Strategi Pertahanan yang Mengedepankan Identity, Nasionalism dan Integrity Jurnal Basicedu Al-Ard: Jurnal Teknik Lingkungan International Journal of Electronics and Communications Systems Jurnal Basicedu Leuser Journal of Environmental Studies Jurnal Teknik Mekanikal Bandar Udara Jurnal Sistem Komputer (SISKOM)
Rahmad Junaidi, Rahmad
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Journal : Leuser Journal of Environmental Studies

 1 
Geochemical Evidence from Major and Trace Elements in Geothermal Waters of Empat Lawang, Southern Sumatra: Clues to Mineralization and Hydrothermal Sources Umam, Rofiqul; Suharno, Suharno; Junaidi, Rahmad
Leuser Journal of Environmental Studies Vol. 3 No. 2 (2025): October 2025
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/ljes.v3i2.343

Abstract

This study explores the major and trace element geochemistry of geothermal waters from Empat Lawang, Southern Sumatra, Indonesia, to assess hydrothermal origins and mineral prospecting potential. Five water samples were analyzed using ternary plots, ion correlation diagrams, and geothermometric equations. A strong Na–Cl correlation (R2 = 0.9694) suggests evaporite dissolution or mixing with connate water, while the Ca–SO4 relationship (R2 = 0.9555) indicates gypsum or anhydrite dissolution. The Ca + Mg vs. HCO3 pattern reflects carbonate and silicate weathering influenced by lithological variability. Diagnostic ion plots reveal active ion exchange and halite dissolution across sample sites. Reservoir temperatures estimated using Giggenbach and Fournier Truesdell equations range from 190°C to 404°C, with an outlier of 1593.75°C in PN3, likely due to fluid disequilibrium. Depths span 4.22 to 16.39 km, indicating deep-seated hydrothermal systems with intense fluid–rock interaction. The Cl/Li vs. B plot identifies hydrothermal signatures, with most samples below the Cl/Li < 1000 threshold and elevated boron levels, suggesting active leaching and mineral transport. These findings highlight the potential for borate and metal mineralization. By integrating classical geochemical approaches with modern trace element indicators, this study provides a novel framework for geothermal exploration in Indonesia’s volcanic regions. These findings suggest potential for borate and metal mineralization and offer a geochemical framework for geothermal exploration in Indonesia’s volcanic regions.
Co-Authors Abdurahman Abdurrahman Adi, Langit Cahya Ahmad, Lukman Al-Ard Jurnal Teknik Lingkungan UIN Sunan Ampel Surabaya Albahri, Fauzan Putra Amir Machmud Amir Machmud, Amir Antomi Saregar Arista Pradani, Gading Assya'bani, Ridhatullah Athaya Daffi Zaidan, Darell Endah Kinarya Palupi Fanitra, Irma Gilang Hafid Bima Nugraha, Kevin Haryadi Wibowo, Imam Hasridayyana, Ira Irzaman, Irzaman Mada Sanjaya WS Muhamad Syazali Palupi, Endah Kinarya Rivaldo Mea, Yohanes Rizqi Prastowo Rofiqul Umam Rr Diah Nugraheni Setyowati, Rr Diah Nugraheni Samudera Novarizki, Muhammad Sely Novita Sari Suharno Suharno UIN Sunan Ampel Surabaya, Al-Ard Jurnal Teknik Lingkungan Wahyudianto, Benny Yudha Satya Perkasa Yudha Satya Perkasa, Yudha Satya Zakir Sabara