Remote sensing satellite-based structural/alteration mapping for gold exploration in the Ketté goldfield, Eastern Cameroon

Mbianya, Ghislain Ngassam; Ngnotue, Timoléon; Wambo, Jonas Didero Takodjou; Ganno, Sylvestre; Pour, Amin Beiranvand; Kenné, Patrick Ayonta; Fossi, Donald Hermann; Wolf, Isabelle D.

doi:10.1016/j.jafrearsci.2021.104386

Cited by 23 publications

(10 citation statements)

References 79 publications

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“…The Minimum Noise Fraction (MNF) and Principal Component Analysis (PCA) followed by direction filters were applied as alternative approaches to identify potential mining sites (Figure 4). The two techniques have been successfully used for the detection of mining sites in other locations (Abass Saley et al., 2021; Aretouyap et al., 2020; Gannouni & Gabtni, 2015; Ghislain et al., 2021; Ibrahim & Mutua, 2014; Ourhzif et al., 2019). Due to insecurity issues, a short period of fieldwork (3 days) was carried out on the Bouda site.…”

Section: Methodsmentioning

confidence: 99%

Structural Controls of the Expansion of Small‐Scale Artisanal Gold of Bouda Area (Kaya‐Goren Green Belt, Burkina Faso) From Remote Sensing

Dao,

Ilboudo,

Baratoux

2024

Earth and Space Science

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Small‐scale artisanal mining is a vital sector of the economy of Burkina Faso. This activity, correctly regulated, remains essential for the population despite security issues since 2015. Exploration of new areas for gold mining in this condition is difficult but essential to continue extractive activities. It is, therefore, important to define viable corridors, with science‐based evidence for the good prospects, to support artisanal miners’ activities in a way that minimizes the environmental impact. We describe a remote sensing approach to study the structural control of expanding small‐scale artisanal gold activity at the Bouda site and define future mining corridors. This remote sensing approach can also mitigate and remedy environmental impacts. The Minimum Noise Fraction (MNF) is applied to Landsat images (7‐ETM+, 5‐TM, and 8‐OLI, respectively, for 2000, 2011, and 2022) to detect extraction sites and perform a spatiotemporal analysis of the expansion of areas affected by gold extraction. The near‐infrared and mid‐infrared bands of Landsat images significantly contribute to detecting extraction areas. A morphological study of the site over time and Principal Component Analysis (PCA) on Landsat 8‐OLI enable us to perform a lineament analysis. The expansion of mining activity is structurally controlled, as revealed by the correlation between gold occurrences and high lineament densities, especially in the dominant NE‐SW direction. These analyses suggest five potential prospecting corridors in the Bouda site.

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Section: Methodsmentioning

confidence: 99%

Structural Controls of the Expansion of Small‐Scale Artisanal Gold of Bouda Area (Kaya‐Goren Green Belt, Burkina Faso) From Remote Sensing

Dao,

Ilboudo,

Baratoux

2024

Earth and Space Science

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“…During the last three decades, remote sensing satellite imagery and geographic information system (GIS) techniques have taken a prominent place in geological study (Kamel et al, 2017). For example, they are successfully and extensively used for exploration of ore minerals around the world (Abdelnasser et al, 2018; Liu et al, 2017; Pour et al, 2018a, Pour et al, 2018b, Pour et al, 2018c; Noori et al, 2019; Sheikhrahimi et al, 2019; Bolouki et al, 2020; Takoudjou Wambo et al, 2020; Ghislain et al, 2021; Kenzo Tonang, et al, 2021; Chattoraj et al, 2020; Sekandari et al, 2020a, Sekandari et al, 2020b; Parsa & Pour, 2021; Parsa, 2021). The basic principle of this technique, which allows the extraction of information (such as lithology, geological structures associated with extensive shear zone, potential zones of gold mineralization) before field work is carried out.…”

Section: Introductionmentioning

confidence: 99%

“…Metang et al (2014); Akame et al (2016) andBinam Mandeng et al (2018) applied remote sensing for lithologic and structural mapping in South Cameroon, respectively, at the Matomb-Makak area, Sangmelima and Abiete-Toko gold districts. In Eastern Cameroon, Takodjou Wambo et al (2016Wambo et al ( , 2020 and Ghislain et al (2021) characterized the structural mapping and identified the potential zone of gold mineralization in the Ngoura Colomines and Ketté goldfield. In the Southwestern Cameroon, very few studies using satellite remote sensing analysis were devoted (Nguemhe et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Geological mapping and structural interpretation of the Dschang‐Santchou‐escarpment (West, Cameroon), using Landsat 8 OLI/TIRS sensors/SRTM and field observations

et al. 2022

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Geological mapping of the Dschang‐Santchou‐escarpment rocks in the Western Cameroon region was done using a combination of Landsat 8 OLI/TIRS, SRTM images acquired by satellites on January 21, 2021, and field observations. Lineaments were pre‐processing and processing, performed with Envi 5.1. The different methods of digital processing applied, such as the principal component analysis, the coloured compositions and the combination of bands, show a lithological differentiation of the geological formations of the study area. Lineament maps were obtained by applying Sobel directional filters where 496 lineaments were manually extracted. These lineaments display two main trending directions: the NW–SE trend corresponding to the S2 metamorphic foliation direction and the NE–SW trend corresponding to the S3 magmatic foliation direction. The set of these lineaments represents the fracture network in the area. The field observations as well as the lineaments mapping obtained, allowed us to confirm with the help of the fracture network that we are indeed in an escarped environment. Remote sensing data constitute thus a useful tool for geological mapping and structural reconstitutions in the escarped environment.

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“…Remote sensing is a suitable tool to explore mineralization potential points [1] in the early stages of mineral exploration [2,3]. Hydrothermal fluids react with host rocks and change their mineralogical and chemical composition to form mineral deposits such as porphyry copper deposits [4,5]. These changes give rise to altered minerals in rocks while giving them unique spectral characteristics [4,6].…”

Section: Introductionmentioning

confidence: 99%

“…Hydrothermal fluids react with host rocks and change their mineralogical and chemical composition to form mineral deposits such as porphyry copper deposits [4,5]. These changes give rise to altered minerals in rocks while giving them unique spectral characteristics [4,6]. Geologists are used images from various satellites to detect the altered rocks associated with ore mineralization [7].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Fuzzy-Analytic Hierarchy Process (AHP) Model for Porphyry Copper Prospecting in Simorgh Area, Eastern Lut Block of Iran

Khosravi

Ширази

Shirazy

et al. 2021

Mining

Self Cite

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The eastern Lut block of Iran has a high potential for porphyry copper mineralization due to the subduction tectonic regime. It is located in an inaccessible region and has harsh arid conditions for traditional mineral exploration campaigns. The objective of this study is to use Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) remote sensing data for porphyry copper exploration in Simorgh Area, eastern Lut block of Iran. Hydrothermal alteration zones such as argillic, phyllic and propylitic zones associated with porphyry copper systems in the study were identified using false color composition (FCC), band ratio (BR), principal component analysis (PCA) and minimal noise fraction (MNF). The thematic alteration layers extracted from FCC, BR, PCA and MNF were integrated using hybrid Fuzzy-AHP model to generate a porphyry copper potential map for the study area. Four high potential zones were identified in the central, western, eastern and northeastern of the study area. Fieldwork was used to validate the approach used in this study. This investigation exhibits that the use of hybrid Fuzzy-AHP model for the identification of hydrothermal alteration zones associated with porphyry copper systems that is typically applicable to ASTER data and can be used for porphyry copper potential mapping in many analogous metallogenic provinces.

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Remote sensing satellite-based structural/alteration mapping for gold exploration in the Ketté goldfield, Eastern Cameroon

Cited by 23 publications

References 79 publications

Structural Controls of the Expansion of Small‐Scale Artisanal Gold of Bouda Area (Kaya‐Goren Green Belt, Burkina Faso) From Remote Sensing

Structural Controls of the Expansion of Small‐Scale Artisanal Gold of Bouda Area (Kaya‐Goren Green Belt, Burkina Faso) From Remote Sensing

Geological mapping and structural interpretation of the Dschang‐Santchou‐escarpment (West, Cameroon), using Landsat 8 OLI/TIRS sensors/SRTM and field observations

Hybrid Fuzzy-Analytic Hierarchy Process (AHP) Model for Porphyry Copper Prospecting in Simorgh Area, Eastern Lut Block of Iran

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