Abstract
A 39-m thick phosphate rock was subdivided into 8 layers based on facies changes. The mineralogical composition of these layers was investigated using XRD and binocular loupe. The result appeared to reveal that the layers prove to contain carbonate-fluorapatite, quartz, calcite, gypsum and dolomite, in proportions that vary from a layer to another. This variation is also persistent in the implemented chemical analyses. A simple washing was carried out to obtain a commercial phosphate. The phosphorus pentoxide content (29.41%) in the layer CIII4 turns out to be high enough that it does not require further treatment. Noteworthy, however, is that it appears economically interesting to mix layer CI1 (26.58% P2O5) with layer CIII4 for a 28.77% phosphorus pentoxide content to be attained.
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References
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Sassi, S., Horchani-Naifer, K., Fattah, N., Ferid, M. (2019). Stratigraphic and Mineralogical Study of Chouabine Formation in the Meknassy Basin (Central Tunisia). In: Doronzo, D., Schingaro, E., Armstrong-Altrin, J., Zoheir, B. (eds) Petrogenesis and Exploration of the Earth’s Interior. CAJG 2018. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-030-01575-6_37
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DOI: https://doi.org/10.1007/978-3-030-01575-6_37
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