Mapping of favourable mining areas in the Tiouit area by multispectral remote sensing and airborne gamma-ray spectrometry coupled with geochemical data (Eastern Anti-Atlas, Morocco)

Pub Date : 2022-06-21 DOI:10.1080/25726838.2022.2089967

A. Miftah, D. El Azzab, Ahmed Attou, M. Ouchchen, Y. Mamouch, Lahsen Achkouch, Ayoub Soulaimani, Saâd Soulaimani, A. Manar

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引用次数: 3

Abstract

ABSTRACT The current investigation concern Tiouit region in order to perceive potential mining zones. Remote sensing data were the main component to process. In order to spot geochemical anomalies associated with the target zones, multispectral ASTER data, gamma-ray spectrometry, and stream sediment data were used. Crosta and SAM applications granted to map a spatial distribution of propylitic, phyllic, clay, and ferruginous alteration zones. The normalized ratios let the delineation of potassic alteration zones, including the Tiouit gold mine characterized by an intense alteration in the Ikniwn granodiorite. Thus, the potassic alteration zones are consistently co-located with the tectonic structures materialized by strong fracturing densities. The stream sediment geochemical investigation revealed that the cited areas have an important potential of mineralization, with high concentrations of As (136 g/t), Cu (91 g/t), Pb (141 g/t), Zn (392 g/t), Ag (3 g/t), Mo (11 g/t), Mn (0.2 g/t), and Fe (10.63 %).

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利用多光谱遥感和机载伽玛射线能谱结合地球化学数据绘制Tiouit地区有利矿区(摩洛哥东部Anti-Atlas)

摘要当前的调查关注的是Tiouit地区，以了解潜在的矿区。遥感数据是处理的主要组成部分。为了发现与目标区域相关的地球化学异常，使用了多光谱ASTER数据、伽马射线光谱法和河流沉积物数据。Crosta和SAM申请获准绘制丙基、千枚岩、粘土和含铁蚀变带的空间分布图。归一化比率可以描绘钾蚀变带，包括以伊克尼翁花岗闪长岩强烈蚀变为特征的Tiouit金矿。因此，钾蚀变带与强破裂密度形成的构造结构始终位于同一位置。河流沉积物地球化学调查表明，所引用的区域具有重要的矿化潜力，As（136 g/t）、Cu（91 g/t），Pb（141 g/t）和Zn（392 g/t）浓度较高，Ag（3 g/t）含量较高，Mo（11 g/t）的浓度较高，Mn（0.2 g/t）及Fe（10.63%）的浓度也较高。

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