Abstract
Geostatistical analysis of geochemical exploration data can provide useful information for evaluating the mineralization potential of geologic bodies. The main objective of this study was to evaluate the spatial distribution of U and V over an area in the upper phosphorite member, the A0 unit, in Eshidiyya basin in southern Jordan. Drill-hole samples were analyzed. The geochemistry of the analyzed elements was assessed. The spatial variability of U and V was also assessed using semivariance analysis. Both U and V were found to exhibit a normal distribution as indicated by the constructed histograms and the calculated skewness and kurtosis coefficients. Exponential models with nugget effects were fitted to the experimental semivariograms. Ordinary kriging was performed to generate geochemical maps. The applied interpolation technique proved to be the best in producing geochemical exploration maps for both U and V in Eshidiyya phosphorites. The constructed geochemical maps helped visualize a WNW–ESE U mineralization trend in the studied phosphorites. This trend should be taken into consideration in any future exploration programs for U in south Jordan.
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Acknowledgments
This work was accomplished during a sabbatical leave for 1 year for the first author, A. M. Abed, for which he is thankful to the University of Jordan. This work is financially supported by the Deanship of Scientific Research, the University of Jordan. The authors would like to thank the Jordanian Phosphate Mines Company, especially Engineer Kamal Njadat, Eshidiyya Mine Manager, and geologists Ibrahim Rawashdeh, Mohammad Abu Hazeem, and Hanna Qtami, for the hospitality, facilities, sampling, and accommodation during the field work in the Eshidiyya Mines. We would like to thank the two anonymous referees of the Arab Journal of Geosciences for their valuable comments which greatly improved the original manuscript.
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Abed, A.M., Saffarini, G.A. & Sadaqah, R.M. Spatial distribution of uranium and vanadium in the upper phosphorite member in Eshidiyya basin, southern Jordan. Arab J Geosci 7, 253–271 (2014). https://doi.org/10.1007/s12517-013-0837-1
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DOI: https://doi.org/10.1007/s12517-013-0837-1