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Journal : Journal of Geoscience, Engineering, Environment, and Technology

Assessing the Carbon Sequestration Potential of Ultramafic Rocks in the Kolaka Ophiolite Complex, Southheastern Sulawesi: A Petrographic, Geochemical, and Mineralogical Study Syahrul; La Ode Dzakir; Riska; Rio Irhan Mais Cendra jaya; Masri
Journal of Geoscience, Engineering, Environment, and Technology Vol. 10 No. 1 (2025): Article In Press JGEET Vol 10 No 01 : March (2025)
Publisher : UIR PRESS

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Abstract

Climate change has prompted significant global interest in carbon sequestration technologies, particularly using geological formations. This study investigates the potential of ultramafic rocks from the Kolaka Ophiolite Complex in Southeast Sulawesi for carbon sequestration, focusing on the mineralogical, petrographic, and geochemical characteristics that enhance their reactivity with CO₂. The research involved petrographic and mineragraphic analyses of 15 peridotite samples, geochemical measurements via X-ray fluorescence (XRF), and mineral characterization using scanning electron microscopy (SEM). The results revealed that Kolaka's ultramafic rocks, particularly harzburgite and lherzolite, exhibit moderate to high serpentinization, which enhances their reactivity with CO₂. Key minerals such as olivine, pyroxene, and serpentine, rich in magnesium, calcium, and iron oxides, demonstrate significant potential for mineral carbonation. Secondary minerals like magnesite and brucite were identified as products of carbonation, reinforcing the rocks' ability to act as carbon sinks. The discussion highlights that serpentinized peridotites are more effective for carbon sequestration than unaltered ones due to increased mineral reactivity. The presence of magnesite and Cr-Fe-rich carbonates, alongside serpentine veins, indicates that fluid-rock interactions have promoted ongoing carbonation processes. The Kolaka ultramafic rocks, therefore, hold strong potential for long-term carbon storage, offering a promising solution for reducing atmospheric CO₂ levels
Co-Authors Abdur Razzaq, Abdur Adhawiyah, Robi’atul Adi Wijaya, Adi Wijaya Aditya Hikmat Nugraha Ahmad Yusuf Al Zuhri Ambri, Nurul Khotimah Amin, Andi Mustika Aminuyati Andayani, Nur Rahmah Andi Muhammad Irfan Taufan Asfar Andi Tenrisanna Syam Anggi Andika Pratama Anggraini, Revi Anisa Anwar Anwar Ramli Asfar, Andi Muhamad Iqbal Akbar Awaluddin, A. Fajar Azlan Azhari burhamin, yusriyani Damirah Debby Indi Nathalia Parealla Dewi Nurul Rukmi Dwi Puspita, Ryan Efi Kristiana Elimawaty Rombe Farhan, Muhammad Afif Fidina, Tsabita Finur, Hendra Fitri Kumalasari, Fitri Fitria Jannatul Laili Haniarti, Haniarti Hapisah Hariyanti Hamid Harry Fauzi Harvani, Dini Hasan Eldin Adimu Hasibuan, Syahir Afwan Hasidu, La Ode Abdul Fajar Ilham Antariksa Tasabaramo Indah Cahya Kamila Indah Meilia Putri Indriyani, NLP IRA NURIYA SANTI Irfan Suliansyah Ismail Keri Ismaya, Nurlailida Jaya, Rio Irhan Mais Cendra Jayanti, Evi Kheriah La Ode Dzakir Luthfiah, Sopia M. Iqbal Machfud Maharani Manurung, Lora Regina Masri Masri Megawati Mughni Sulubara, Seri Muh Ahlul Dzikry Muhamad Stiadi Muliati Muluki Mutmainnah Nade, Erwing Nadia Rahayu Nasrah Nawwir Junari Neneng Yanti Andriani Nugraha, Muhamad Yudistira Nur Aisyah Nur Azizil Nurhalipa Nuriska Nurman Nurul Magfirah Oriza, Lalandra Panaungi, Yasrial Rifqi Pratama, Aldi Putri Cahyani Putri Pelangi Rahmatullah Rahmi Rifqah Maharani Rinda Kirana Riska Riska Riza Kania Romansyah Sahabuddin Runa Helmina Rusmia Azizah Sapri Saputra, Muhammad Rio Tri Sariana Sarina Sarlian Silfiah Khumairah, Eka Sitti Nurul Zyaqilah Aziz Sitti Rahma Ma'Mun Sri Wahyuni Sri Wanti Sugiarti, Shella Sunarti Suraidah Sarbia Suriati Suriyati Suriyati SURYANTI Syahriyah Semaun, Syahriyah Syahrul Syaparuddin Razak Syarifuddin K.A. T. Saiful Basri Tania, Putri Toibah Umi Kalsum Tri Budiyanti Yuniarti Zakiah Zelina