Critical Raw Material Potential and Mineral System Architecture of the Northeastern Estonian Basement (Eastern Fennoscandia): Integration of Drill-Core Geochemistry, Geostatistics, and Geophysical Insights

Abstract Book of the conference (Pg, 108-109) https://iagod2026.inporto.events/docs/IAGOD_2026%20Abstract_Volume.pdf This presentation explores the concealed Precambrian basement of Estonia through an integrated geophysical and mineralogical approach. Gravity and magnetic data are used to characterize major lithological domains, structural boundaries, and subsurface bodies, supported by forward and inverse modelling and comparison with available geological and drill-core information. These regional-scale observations are complemented by high-resolution analytical techniques, including Laser-Induced Breakdown Spectroscopy (LIBS) for rapid geochemical and mineralogical characterization of drill-core material and FIB-TEM analyses for nanoscale investigation of selected mineral phases. By combining geophysical imaging with geochemical and microstructural observations across multiple spatial scales, the study aims to improve the interpretation of Estonia’s poorly exposed crystalline basement and to better constrain its geological evolution and potential for critical raw material mineralization