A Novel Approach in Hydrogeochemical Exploration for Uranium Mineralization: an Example from West Central Sinai, Egypt

Abstract

Groundwater in contact with ore deposits may acquire a chemical composition that could be used as a guide for exploration. Eight well‐water samples are collected from a known uranium‐mineralized area near Abu Zenima, west central Sinai to examine the applicability of using the hydrogeochemical technique in the search for uranium mineralization in similar arid areas. The analytical chemical data of the ground water is compared with ground radiometric measurements. The obtained results indicate that groundwater affected by uranium mineralization has a specific relativity of major anions expressed essentially as SO4>Cl>HCO3 and to a lesser extent as C1>SO4>HCO3, associated as a rule with low magnesium content. This association constitutes a signature of uranium mineralization on the composition of groundwater in west central Sinai and could be used as an important exploration guide in the search for uranium deposits in similar areas. Anomalies in Ni, Fe, Zn and Cr and other pathfinder elements in groundwater can furnish geochemical guides to uranium ores. The immobile trace element anomalies, including Zn, Ni and Fe are strongly distributed near the orebody; whereas the relatively mobile trace elements, including Co, U, V and Cr, constitute the dispersion haloes away from the orebody. A new hydrogeochemical discrimination diagram is constructed to be used as a quick and cost effective exploration tool in the search for uranium occurrences in environmentally similar arid areas. Based on the obtained results, a new site for uranium occurrence, west of W. Baba, is delineated and recommended for future detailed geological and geochemical surveying.

Frequency Spectrum and Variability Analysis for Big Data in Geological Space –Taking Drilling Big Sample Data in Ordos Basin as a Case Study

“…Distribution variation of uranium mining space has a close relationship with sedimentary construction evolution, and borehole logging data is the important data set to reflect vertical lithology combination of the basin and the change of its physical properties; the logging data is divided into two types of direct uranium anomaly data and indirect associated data (Feng et al, 2016;Hao et al, 2015;Jiang et al, 2016;Liu et al, 2016;Yi et al, 2015). Application of logging data to depict digital features of uranium-bearing construction, which is not only very important for identifying change rule of uranium-bearing rock series of sedimentary facies and other sedimentary stratum combination, but also is important for identifying uranium-bearing characteristics of basin space (Ahmed and Arnous, 2015;Cai et al, 2015;Li et al, 2015;Luo et al, 2015). Therefore, the quantitative analysis of basin sedimentary facies, sedimentary construction, and uranium-bearing series is a hot and difficult problem for sandstone type uranium deposits assessment.…”