29 documents found, page 1 of 3

Assessing the Potential of PlanetScope Imagery for Iron Oxide Detection in Anti...

The increasing demand for critical raw materials, such as antimony-a semimetal with strategic relevance in fire-retardant applications, electronic components, and national security-has made the identification of European sources essential for the European Union's strategic autonomy. Remote sensing offers a valuable tool for detecting alteration minerals associated with subsurface gold and antimony deposits that...

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Optimizing Exploration: Synergistic approaches to minimize false positives in p...

Pegmatites 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...

Lineament 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...

Spectral Library of European Pegmatites, Pegmatite Minerals and Pegmatite Host-...

The New Exploration Tools for European Pegmatite Green-Tech Resources (GREENPEG) spectral database contains the spectral signature, obtained through reflectance spectroscopy studies, of European pegmatites and minerals as well as their host rocks. Samples include pegmatites of the Nb-Y-F (NYF) and Li-Cs-Ta (LCT) chemical types and host rocks from pegmatite locations in Austria, Ireland, Norway, Portugal, and Sp...

The INOVMineral Project's Contribution to Mineral Exploration-A WebGIS Integrat...

Due 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...

The INOVMineral Projects Contribution to Mineral Exploration A WebGIS Integrati...

<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

Several 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...

Remote 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...

Spectral Analysis to Improve Inputs to Random Forest and Other Boosted Ensemble...

As an important source of lithium and rare earth elements (REE) and other critical elements, pegmatites are of great strategic economic interest for present and future technological development. Identifying new pegmatite deposits is a strategy adopted by the European Union (EU) to decrease its import dependence on non-European countries for these raw materials. It is in this context that the GREENPEG project wa...