HyMap imagery for copper and manganese prospecting in the east of Ameln valley shear zone (Kerdous inlier, western Anti-Atlas, Morocco)

Hajaj, Soufiane; Harti, Abderrazak El; Jellouli, Amine; Pour, Amin Beiranvand; Himyari, Saloua Mnissar; Hamzaoui, Abderrazak; Bensalah, Mohamed Khalil; Benaouiss, Naima; Hashim, Mazlan

doi:10.1080/14498596.2023.2172085

Cited by 7 publications

(13 citation statements)

References 64 publications

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“…Within the Ultimate conglomerates and quartzites lithological units, three distinct sites exhibit favorable conditions for conducting mineral exploration campaigns, which is verified by utilizing hyperspectral survey techniques [8]. The close spatial association between the NE-SW and NW-SE lineaments and alteration zones highlighted an important tectonic control of mineralization in the study area [8]. The alteration minerals in the study area include muscovite, dolomite, pyrophyllite, illite, haematite, kaolinite, and montmorillonite.…”

Section: Geological Setting and Alterationsmentioning

confidence: 74%

“…In the eastern region of Kerdous, historical mining operations are evident through the presence of the disused Manganese Idikel mine. Within the Ultimate conglomerates and quartzites lithological units, three distinct sites exhibit favorable conditions for conducting mineral exploration campaigns, which is verified by utilizing hyperspectral survey techniques [8]. The close spatial association between the NE-SW and NW-SE lineaments and alteration zones highlighted an important tectonic control of mineralization in the study area [8].…”

Section: Geological Setting and Alterationsmentioning

confidence: 75%

“…The minimum wavelength mapping results exhibit the high abundance of the Al-OH alteration in the Ultimate conglomerate lithological unit, as highlighted in a purple color, while this alteration is absent in the carbonates units (Figure 2). The high alteration minerals abundance is related essentially to argillic and phyllic alterations [8]. Additionally, Fe 2+ /Fe 3+ alterations were mapped in blue tones in gneisses and some parts of Ultimate conglomerates units.…”

Section: Resultsmentioning

confidence: 98%

“…The alteration minerals in the study area include muscovite, dolomite, pyrophyllite, illite, haematite, kaolinite, and montmorillonite. Hydrothermal alteration potentially related to paleo-relief occurrence includes the silicification, sericitization, and dolomitization of the host rocks (for additional details, see [8]).…”

Section: Geological Setting and Alterationsmentioning

confidence: 99%

“…Additionally, Al-OH is mapped by dividing the sum of band 101 (2094 nm) and 111 (2268 nm) by band 108 (2217 nm). The enhancement of Mg-Fe-OH/CO 3 alteration minerals can be performed by dividing the sum of Band 111 (2268 nm) and 120 (2414 nm) by band 114 (2318 nm) [8,15]. This capability is grounded in the distinctive absorption features exhibited by these minerals [1].…”

Section: Hymap Data and Remote Sensing Techniquesmentioning

confidence: 99%

See 4 more Smart Citations

Hydrothermal Alteration Features Enhancement and Mapping Using High-Resolution Hyperspectral Data

Hajaj,

El Harti,

Jellouli

et al. 2024

Ecrs 2023

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Section: Geological Setting and Alterationsmentioning

confidence: 74%

Section: Geological Setting and Alterationsmentioning

confidence: 75%

Section: Resultsmentioning

confidence: 98%

Section: Geological Setting and Alterationsmentioning

confidence: 99%

Section: Hymap Data and Remote Sensing Techniquesmentioning

confidence: 99%

See 3 more Smart Citations

Hydrothermal Alteration Features Enhancement and Mapping Using High-Resolution Hyperspectral Data

Hajaj,

El Harti,

Jellouli

et al. 2024

Ecrs 2023

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Base-metal exploration by using remote sensing, geological, geophysical, and geochemical datasets with clues from ancient mining: A comprehensive review on Aravalli-Delhi Fold Belt, Rajasthan, India

Jain,

Bhu,

Pandey

et al. 2024

Advances in Space Research

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Towards better delineation of hydrothermal alterations via multi-sensor remote sensing and airborne geophysical data

Shebl

Abdellatif

Badawi

et al. 2023

Sci Rep

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Integrating various tools in targeting mineral deposits increases the chance of adequate detection and characterization of mineralization zones. Selecting a convenient dataset is a key for a precise geological and hydrothermal alteration mapping. Remote sensing and airborne geophysical data have proven their efficiency as tools for reliable mineral exploration. Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER), Advanced land imager (ALI), Landsat 8 (L8), and Sentinel 2 data are widely-used data among various types of remote sensing images in resolving lithological and hydrothermal alteration mapping over the last two decades. ASTER is a well-established satellite in geological remote sensing with detailed Short-wave infrared (SWIR) range compared to visible and near-infrared region (VNIR) that controls iron-associated alteration detection. On contrary, ALI has excellent coverage of the VNIR area (6 bands), but does not possess the potentiality of ASTER for the SWIR and thermal regions. Landsat 8 is widely used and highly recommended for lithological and hydrothermal alteration mapping. The higher spatial (up to 10 m) resolution of Sentinel 2 MSI has preserved its role in producing accurate geological mapping. Notwithstanding the foregoing, implementing the four datasets in a single study is time-consuming. Thus, an important question when commencing an exploration project for hydrothermal alterations-related mineralization (orogenic mineral deposits in the current research) is: which dataset should be adopted to fulfill proper and adequate outputs? Here the four widely recommended datasets (ASTER, ALI, L8, and sentinel 2) have been tested by applying the widely-accepted techniques (false color combinations, band ratios, directed principal component analysis, and constrained energy minimization) for geological and hydrothermal alteration mapping of Gabal El Rukham-Gabal Mueilha district, Egypt. The study area is covered mainly by Neoproterozoic heterogeneous collection of ophiolitic components, island arc assemblage, intruded by enormous granitic rocks. Additionally, airborne magnetic and radiometric data were applied and compared with the remote sensing investigations for deciphering the structural and hydrothermal alteration patterns within the study area. The results demonstrated a different extent from one sensor to another, highlighting their varied efficacy in detecting hydrothermal alterations (mainly hydroxyl-bearing alterations and iron oxides). Moreover, the analysis of airborne magnetic and radiometric data showed hydrothermal alteration zones that are consistent with the detected alteration pattern. The coincidence between high magnetic anomalies, high values of the K/eTh ratio, and the resultant alterations confirm the real alteration anomalies. Over and above that, the remote sensing results and airborne geophysical indications were verified with fieldwork and petrographic investigations, and strongly recommend combining ASTER and Sentinel 2 results in further investigations. Based on the outputs of the current research, we expect better hydrothermal alteration delineation by adopting the current findings as they sharply narrow the zones to be further investigated via costly geophysical and geochemical methods in mineral exploration projects.

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HyMap imagery for copper and manganese prospecting in the east of Ameln valley shear zone (Kerdous inlier, western Anti-Atlas, Morocco)

Cited by 7 publications

References 64 publications

Hydrothermal Alteration Features Enhancement and Mapping Using High-Resolution Hyperspectral Data

Hydrothermal Alteration Features Enhancement and Mapping Using High-Resolution Hyperspectral Data

Base-metal exploration by using remote sensing, geological, geophysical, and geochemical datasets with clues from ancient mining: A comprehensive review on Aravalli-Delhi Fold Belt, Rajasthan, India

Towards better delineation of hydrothermal alterations via multi-sensor remote sensing and airborne geophysical data

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