Furqan, Alif Furqan, and Muhammad Revyyansyah. 2025. “Principle and Performance of Portable X-Ray Fluorescence (XRF) Analysis for Rock Geochemical Characterization Using Bruker S1 Titan 600”. Jurnal Riset Teknik Fisika 1 (2):79-84. https://doi.org/10.22373/juritika.v1i2.9324.