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Advisor(s)
Abstract(s)
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, other exploration techniques must be evaluated, namely, remote sensing (RS)
and geophysics. This work presents the results of the INOVMINERAL4.0 project obtained through
alternative approaches to traditional geochemistry that were gathered and integrated into a webGIS
application. The specific objectives were to: (i) assess the potential of high-resolution elevation data;
(ii) evaluate geophysical methods, particularly radiometry; (iii) establish a methodology for spectral
data acquisition and build a spectral library; (iv) compare obtained spectra with Landsat 9 data for
pegmatite identification; and (v) implement a user-friendly webGIS platform for data integration and
visualization. Radiometric data acquisition using geophysical techniques effectively discriminated
pegmatites from host rocks. The developed spectral library provides valuable insights for spacebased
exploration. Landsat 9 data accurately identified known LCT pegmatite targets compared with
Landsat 8. The user-friendly webGIS platform facilitates data integration, visualization, and sharing,
supporting potential users in similar exploration approaches.
Description
Keywords
Geological exploration UAV LiDAR Radiometry Geophysics Remote sensing Landsat 9 GIS Lithium
Citation
Cardoso-Fernandes, Joana; Santos, Douglas; Almeida, Cátia Rodrigues de; Vasques, Julia Tucker; Mendes, Ariane; Ribeiro, Ricardo; Azzalini, Antonio; Duarte, Lia; Moura, Rui; Lima, Alexandre; Teodoro, Ana Cláudia (2023). The INOVMineral project’s contribution to mineral exploration - a WebGIS integration and visualization of spectral and geophysical properties of the aldeia lct pegmatite spodumene deposit. Minerals. eISSN 2075-163X. 13:7, p. 1-27
Publisher
MDPI