El Sayed A. Saber Saber, Ashraf Ismael, Abdelrahem Embaby, Yehia Z. Darwish, Samir M. Selim, Ehab Gomaa, Ahmed A Arafat
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Geochemical studies indicate a strong relationship between U-mineralization and Chemical Alteration Index (CIA), alteration features, and associated hydrothermal solution mineralization. The geostatistical method is used to study the behavior and distribution of U and Th in both younger granites and Hammamat sediments. The Total Gamma, eU, and eTh values are used in kriging analysis and variogram models to determine their spatial dependence and perform a spatial interpolation of sparse measurements and deposition level map. Originality. The use of a multidisciplinary method combining petrographical, mineralogical and geochemical investigations with geostatistical analysis allowed for a quantitative evaluation of the spatial location of geological objects such as uranium mineralization in the area. Practical implications. Variogram models and kriging analysis can also be used to assess the lithological composition of rocks and mineralogical phases, and they also provide a clear vision of the elements distributed in the ore, which is very useful during the planning and production stages.","PeriodicalId":43896,"journal":{"name":"Mining of Mineral Deposits","volume":" 27","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2023-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Geological and geostatistical analysis for equivalent uranium and thorium mineralization, Gattar-V Eastern Desert, Egypt\",\"authors\":\"El Sayed A. Saber Saber, Ashraf Ismael, Abdelrahem Embaby, Yehia Z. Darwish, Samir M. Selim, Ehab Gomaa, Ahmed A Arafat\",\"doi\":\"10.33271/mining17.04.018\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Purpose. 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引用次数: 0
摘要
目的。本文旨在评估铀矿和钍矿的品位分布,以绘制铀矿潜力图,并估算埃及东部沙漠 Gattar-V 地区的铀矿储量。方法。采用多学科方法确定 Gattar-V 地区的铀矿化当量。其中包括地质(岩相学、矿物学和地球化学)和地质统计(克里金分析和变异图模型)方法。研究结果。地质研究表明,位于较年轻花岗岩和哈马马特沉积物接触沿线或附近的铀矿化分别表现为表生和漂白蚀变。地球化学研究表明,铀矿化与化学蚀变指数(CIA)、蚀变特征以及相关热液溶液矿化之间存在密切关系。地质统计方法用于研究铀和钍在较年轻花岗岩和哈马马特沉积物中的行为和分布。总伽马值、eU 值和 eTh 值被用于克里金分析和变异图模型,以确定其空间依赖性,并对稀疏测量值和沉积水平图进行空间插值。独创性。采用多学科方法,将岩石学、矿物学和地球化学调查与地质统计分析相结合,对该地区铀矿化等地质对象的空间位置进行了定量评估。实际意义。变异图模型和克里金分析也可用于评估岩石的岩性组成和矿物相,它们还能提供矿石中元素分布的清晰视图,这在规划和生产阶段非常有用。
Geological and geostatistical analysis for equivalent uranium and thorium mineralization, Gattar-V Eastern Desert, Egypt
Purpose. This paper aims to assess the distribution of uranium and thorium ore grade distribution to produce a uranium potential map and estimate of the uranium ore reserves in the Gattar-V area, Eastern Desert, Egypt. Methods. Multidisciplinary approach is applied to determine the equivalent uranium mineralization in the Gattar-V area. It includes geological (petrographical, mineralogical and geochemical) and geostatistical (kriging analysis and variogram models) methods. Findings. Geological studies show that the U-mineralization located along or near the contact between younger granites and Hammamat sediments exhibits episyenitization and bleaching alteration, respectively. Geochemical studies indicate a strong relationship between U-mineralization and Chemical Alteration Index (CIA), alteration features, and associated hydrothermal solution mineralization. The geostatistical method is used to study the behavior and distribution of U and Th in both younger granites and Hammamat sediments. The Total Gamma, eU, and eTh values are used in kriging analysis and variogram models to determine their spatial dependence and perform a spatial interpolation of sparse measurements and deposition level map. Originality. The use of a multidisciplinary method combining petrographical, mineralogical and geochemical investigations with geostatistical analysis allowed for a quantitative evaluation of the spatial location of geological objects such as uranium mineralization in the area. Practical implications. Variogram models and kriging analysis can also be used to assess the lithological composition of rocks and mineralogical phases, and they also provide a clear vision of the elements distributed in the ore, which is very useful during the planning and production stages.