Journal
GEOCARTO INTERNATIONAL
Volume 37, Issue 22, Pages 6579-6601Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10106049.2021.1953617
Keywords
Remote sensing; ASTER data; mineral resource exploration; carbonatite; iron oxide-apatite ore
Categories
Funding
- UM6P project
Ask authors/readers for more resources
A mapping approach utilizing ASTER data, band rationing, principal component analysis, and minimum noise fraction techniques successfully delineated targeted rocks in the investigated area, showing great potential for mapping carbonatites and iron oxide-apatite ore outcrops. Validation through field observations and in-situ geochemical analysis ensured the accuracy of the results, which were further improved through supervised classification using field data as training data.
Mapping of carbonatites and related mineral deposits has occupied prominent place in mineral resource exploration programs given their potential to host valuable concentrations of critical metals such as rare earth elements and niobium. Based on spectral characteristics of most indicative minerals for these rocks, a mapping approach was developed using Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) data. The combination of band rationing outcomes with components from the principal component analysis and minimum noise fraction techniques highlighted the targeted rocks, with the excellent prospective zone representing similar to 0.2% of the total investigated area. This approach was successfully applied to the Gleibat Lafhouda complex to rapidly delineate carbonatites and iron oxide-apatite ore outcrops. Results were validated through field observations and in-situ geochemical analysis using a portable X-ray fluorescence analyzer. Field data have also served as training data to perform a supervised classification, allowing further improvement of the mapping results.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available