Investigating the capability of Sentinel-2 and Worldview-3 VNIR satellite data to detect mineralized zones at an igneous intrusion in the Koutala islet (Lavreotiki, Greece) using laboratory mineralogical analysis, reflectance spectroscopy and spectral indices

During the last decades, rapid progress of remote sensing data processing for their utilization in detecting locations possible sites linked to hydrothermal alteration and ores has gained increasing attention due significant time cost savings. In this study, we present findings a joint laboratory examination mineralization zone induced by granitoid intrusion onshore islet “Koutala”, Lavreotiki, central Greece. Our objective is investigate potential Sentinel-2 WorldView-3 VNIR satellite detect map oxidized ore zones minerals that are detected from analysis samples could be Fe-Mn mineralization. Two approaches followed, namely reflectance spectroscopy spectral indices. spectroscopy, signatures all study area retrieved libraries. The resampled bands. Continuum-removal then applied diagnostic absorption features each mineral band configuration. dataset with best configuration detection used production maps using corresponding image. second approach involves calculation indices, ferric, ferrous iron hydroxyl-bearing alteration, on spectra. ferric index both datasets while two other indices require use SWIR bands therefore, they can only calculated data. All results show analyses consistent complementary. seem sensitive manganese phase. capable potentially ore, including phases. investigated area, there related intrusion. Hydrothermal observed entire surface but it seems stronger at eastern part where granitoid/schist contact located. It first (i) (b) produced data, revealing spatial distribution providing indirect estimations degree presence.