Integrative Geophysical Approach for Enhanced Iron Ore Detection: Optimizing Geoelectrical and Geomagnetic Methods

Abstract

Geoelectrical and geomagnetic technologies are employed in the Ogololo Sub-District of Sojol District, Donggala Regency, Central Sulawesi, Indonesia, to offer more accurate subsurface information.This is done to rectify inherent deficiencies in the deposit model that impede mineral exploration.The selection of these methods relied on their strong complementarity and effectiveness.Geomagnetic surveys are very effective in identifying the magnetic properties of minerals with high iron levels.On the other hand, geoelectrical surveys are highly effective in distinguishing between ore and host rock by measuring resistivity.Our approach enhances previous methods for iron ore prospecting by using a unique combination of these strategies.To make the interpretation more precise, we employed meticulous modeling and techniques of validation, such as geochemical assays, two-line geoelectrical testing, and five-line geomagnetic observations.Our careful division of iron ore and granitoid bodies, which have resistivity values ranging from 170 to 1146m and 685.7 to 7671.1m, respectively, and geomagnetic anomalies ranging from -650nT to +1700nT, aligns with iron ore content between 61.09 to 97.12%.This clearly shows our significant advancement compared to previous techniques.This combination not only enhances the precision of subsurface condition analysis but also introduces a novel methodology for resource investigation, distinguishing our work in the geophysical exploration sector.Our findings underline the fact that places with substantial magnetic fields are likely electrically conducting structures, which could imply huge iron ore deposits.

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