Analysis of the Relationship Between SiO₂ Content in Volcanic Tuff Materials from Lampung at Hatta Bakauheni Using Portable XRF as a Supporting Method for Rock Magnetism in Determining Their Magnetic Properties. Inventa [Internet]. 2026 Apr. 14 [cited 2026 May 6];1(3):104-1. Available from: https://scriptaintelektual.com/inventa/article/view/964