8 documents found, page 1 of 1
Evaluation of EnMAP Hyperspectral Data for the Identification of Placers in the...
Araújo, L; Cardoso Fernandes, J; Azzalini, A; Carvalho, M; Lima, A; González, J; Teodoro, ACCritical Raw Materials are crucial to achieve the European Unions (EU) goals of a climate-neutral economy by 2050. The high supply risk led the EU to prioritise domestic mineral exploration. This study, part of the S34I - SECURE AND SUSTAINABLE SUPPLY OF RAW MATERIALS project, utilised remote-sensing-based methods to identify and map heavy-mineral (HM) placer deposits in the Ria de Vigo, located in Galicia, Spa...
Optimizing Exploration: Synergistic approaches to minimize false positives in p...
Santos, D; Azzalini, A; Mendes, A; Cardoso-Fernandes, J; Lima, A; Müller, A; Ana TeodoroPegmatites represent a critical source of raw materials for the European Union's future, emphasizing the need to explore new deposits. Remote sensing plays a pivotal role in early-stage pegmatite exploration, generating prospectivity maps to facilitate field validation. The higher the false positive rate, the higher the time and costs required for field campaigns. This study aims to devise an approach that mini...
Automated Lineament Extraction applied to high-resolution imagery Worldview-3 a...
Santos, D; Mendes, A; Azzalini, A; Cardoso Fernandes, J; Lima, A; Ana TeodoroLineament extraction is a commonly used technique in mineral exploration to identify geological structures such as fault scarps, joints, and folds. However, the accuracy of this technique can be limited by factors such as the low spatial resolution of the data. This study aims to address these limitations by exploring the potential of high spatial resolution data for extracting linear structures in Tysfjord, no...
The INOVMineral Project's Contribution to Mineral Exploration-A WebGIS Integrat...
Cardoso Fernandes, J; Santos, D; de Almeida, CR; Vasques, JT; Mendes, A; Ribeiro, R; Azzalini, A; Lia Duarte; Moura, R; Alexandre Lima; Ana TeodoroDue to the current energetic transition, new geological exploration technologies are needed to discover mineral deposits containing critical materials such as lithium (Li). The vast majority of European Li deposits are related to Li-Cs-Ta (LCT) pegmatites. A review of the literature indicates that conventional exploration campaigns are dominated by geochemical surveys and related exploration tools. However, oth...
Sentinel data for critical raw materials (CRM) exploration: First results of th...
Cardoso Fernandes, J; Carvalho, M; Azzalini, A; Rodrigues, G; Monteiro, G; Alexandre Lima; Ana TeodoroTo achieve sustainable development goals, it is crucial to ensure the best practices through the whole mining cycle of critical raw materials (CRM) used in high-Tech, low-carbon goods (batteries, wind turbines, electronics). This is the aim of the SECURE AND SUSTAINABLE SUPPLY OF RAW MATERIALS FOR EU INDUSTRY (S34I) Horizon Europe (HE) project that began on January 1st, 2023. S34I is investigating new data-driv...
The INOVMineral Projects Contribution to Mineral Exploration A WebGIS Integrati...
Cardoso-Fernandes, J; Santos, D; Almeida, CRd; Vasques, JT; Mendes, A; Ribeiro, R; Azzalini, A; Duarte, L; Lima, A; Teodoro, AC<jats:p>Due to the energetic transition at course, new geological exploration technologies are needed to discover mineral deposits containing critical materials such as lithium (Li). The vast majority of European Li deposits are related to LiCsTa (LCT) pegmatites. Literature review indicates that conventional exploration campaigns are dominated by geochemical surveys and related exploration tools. However, othe...
Mapping NYF pegmatite outcrops through high-resolution Worldview-3 imagery
Santos, D; Mendes, A; Azzalini, A; Cardoso Fernandes, J; Lima, A; Ana TeodoroSeveral studies on remote sensing and mineral exploration have been developed or improved in the last decade. However, the low spatial resolution of satellites is a recurring problem in many cases where the mineral or rock is much smaller than the pixel size of the satellite images. This phenomenon, called sub-pixel occurrence, generates an extremely mixed pixel that difficult the performance of conventional cl...
SPECTRAL UNMIXING AND THE POTENTIAL OF WORLDVIEW-3 SATELLITE DATA FOR PEGMATITE...
Santos, D; Mendes, A; Azzalini, A; Cardoso-Fernandes, J; Alexandre Lima; Ana TeodoroRemote Sensing has been successfully applied in the identification of pegmatitic targets. However, the spatial resolution of open data satellites, which is often much larger than the outcrop size of the target mineral or rock, has been a recurrent challenge in this scientific field. This restricts remote sensing methods that are dependent on large outcrop sizes for successful identification. This work applied s...