Riko Septian Putra, Siti Zulaikah, Cahyo Aji Hapsoro, Yoyok Adisetyo Laksono, Aditya Pratama, Dini Fitriani, Nordiana Muztaza, Mariyanto
The advance trend in green energy and industry is to use minerals as raw materials for energy sources. One of mineral that used in modern industry is rare earth elements (REE) based. The use of minerals as raw materials has a significant impact on environmental and economic sustainability. The main impacts of developing green energy and utilizing minerals as raw materials are reducing greenhouse gas emissions, energy diversity, job creation, economic diversification and reduction of environmental pollution. This research focuses on determining the Europium (Eu) content and magnetic susceptibility of the volcanic material of Mount Semeru.The samples used in this research in the form of volcanic ash, sand and andesite rocks taken from 4 different locations around Mount Semeru. Eu content was determined using X-ray fluorescence (XRF) and magnetic susceptibility was measured using Bartington Magnetic Susceptibility (MS2B) at the Central Laboratory Universitas Negeri Malang. The results indicate that Eu content in the volcanic material of Mount Semeru is between 0.2% to 0.49% with an average of 0.37%. The measured magnetic susceptibility χlf is between (340.74-2232.62) ×10-8m3kg-1, the χlf value range is between (331.63-2232.15)×10-8m3kg-1, and the frequency dependent magnetic susceptibility value range is 0.02%-3.05%. The correlation between Eu content and magnetic susceptibility is R= 0.656 with significance P=0.05, which confirms that magnetic susceptibility low frequency can used as a proxy indicators of existing Europium content in Semeru vulcanic materials. © 2025 American Institute of Physics Inc.. All rights reserved.
Physics Department, Faculty of Mathematics and Nature Science, Universitas Negeri Malang, Malang, Indonesia; Research Center for Geological Disaster, National Research and Innovation Agency (BRIN), Bandung, Indonesia; Geophysics Program, Departement of Physics Universitas Padjdjaran, Sumedang, Jatinangor, Indonesia; School of Physics, Universiti Sains Malaysia, Pulau Pinang, 11800 USM, Malaysia; Department of Geophysical Engineering, Faculty of Civil, Environmental Planning and Geo Engineering, Institut Teknologi Sepuluh Nopember, Surabaya, 60111, Indonesia
