Geoelectrical approach to establishing conceptual pit limits in a barite deposit

Combined analysis of resistivity and induced polarization tomography for 3D modelling and preliminary volume estimation of the possible gold mineralization zones in the Simi locality, Adamawa, Cameroon

“…The apparent chargeability (mV/V or ms) is then calculated in order to determine the polarization characteristics of the ground through analysis of the attenuating voltage over a specified time interval (Chouteau, 2006; Geotomo, 2018; Marescot, 2008; Sumner, 2012). IP and ERT are commonly used in geological and mining prospecting to indicate the presence of metal sulphides, metal oxides, clays and other old buried mine sites in the ground (Bharti et al., 2016; Bharti et al., 2019; Claude et al., 2014; Das et al., 2017; Gündoğdu et al., 2022; Horo et al., 2020; Kayode et al., 2022; Moreira et al., 2019; Shirazi et al., 2022; Silva et al., 2022; Singh et al., 2019; Zaid et al., 2022). Other studies use these methods for the 3D modelling of geoelectric anomalies corresponding to the targets sought (Embeng et al., 2022; Kayode et al., 2022; Lenhare & Moreira, 2020; Martin et al., 2020; Moreira et al., 2019; Sağır et al., 2020; Ya‐wei et al., 2015).…”

“…Although several geophysical methods exist, in this study, the sensitivity of the method (for the detection and location of horizontal and vertical structures or bodies), the type of mineralization sought (metallic sulphides), the depth of the targets (near surface), the geological environment (site constituted by ancient sedimentary deposits) and geomorphological environment (topographic variation), the deposit mode (diffuse or disseminated) and the area of investigation are a set of factors that justify, as in most studies (Gouet et al., 2013; Gündoğdu et al., 2022; Liang et al., 2021; Sağır et al., 2020), the choice of the electrical method as the ideal approach for this study. The choice of using the direct current (DC) and induced polarization (IP) electrical methods over the self‐potential method is not only due to their good accuracy and depth of investigation but also to their affinity in the detection of a particular type of mineralization (clays, metal sulphides, graphite and certain metal oxides such as magnetite) (Chouteau, 2006; Claude et al., 2014; Gouet et al., 2013; Kayode et al., 2022; Lenhare & Moreira, 2020; Martin et al., 2020; Shirazi et al., 2022; Silva et al., 2022; Wang et al., 2022). Moreover, with these two methods, the electrical tomography technique (acquisition in vertical sections of electrical data) can be easily used, and the different tomographic sections obtained after data processing can be used in 3D modelling and preliminary estimation of the volume of anomalies (Embeng et al., 2022; Martin et al., 2020; Moreira et al., 2019; Yan et al., 2018; Ya‐wei et al., 2015).…”

Inversion of Geomagnetic Anomalies Caused by Ore Masses Using Hunger Games Search Algorithm

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Estimation of source-body model parameters is an essential step in the interpretation of geomagnetic anomalies (Ekinci et al, 2017). From a mining perspective, geomagnetic exploration can play a key role in reducing some geological uncertainties and also yields appropriate information for decision making in early comprehension of an ore deposit (Silva et al, 2022;Tichauer et al, 2020). For a better interpretation of observed geomagnetic anomalies, several data processing techniques have been introduced so far.

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Investigações geofísicas em apoio à elaboração de plano de lavra em mina de barita no Vale do Ribeira, região de Tunas do Paraná-PR

“…Figura 2.5 -A) Unidades da geologia Regional formada pelas formações Perau, Capiru e Metabasitos, as duas primeiras são separadas pela falha Lancinha. B) Detalhe da unidade local da Formação Perau, com mapeamento dos afloramentos de barita e os perfis de aquisição geofísica realizados nessa pesquisas, dispostos perpendicularmente ao trend estrutural da barita (Fonte: modificado de Silva, et. al.…”