Economic Evaluation of Clay in the East of Tabuk Region, Kingdom of Saudi Arabia

SGS-TR-2013-6 Rafat A. Ghandoura, Rushdi R. Al-Dawawsy, Omar M. Tayb, Ali M. Al-Shobaili, Hassan M. Zowawi, and Abdullah M. Al-Qahtani
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Exposed east, north, and west of Tabuk, widespread micaceous silty clay deposits assigned to either early Silurian Qusaibah Formation of Qalibah Group or late Ordovician to early Devonian Hanadir Member of Qasim Formation were investigated in several localities. With considerable distance from each other, four promising areas were identified and from which, samples were collected for chemical and mineralogical analyses.  Because of encouraging results of chemical and mineralogical analyses, a trenching program, comprising 28 trenches with total length of 1,101 m, was carried out in two promising areas. With kaolinite as the major mineral constituent, clay samples showed the following ranges of components: 45.39 to 56.56 percent SiO2, 19 to 28.9 percent Al2O3, 5.88 to 8.31 percent Fe2O3, and 0.98 to 1.98 percent MgO. Grain size analyses indicate sandy clayey silt. Ceramics tests demonstrate suitability for manufacture of structural clay products. A preliminary mining feasibility study indicates promising potential of the clays in the manufacture of red bricks.



Ghandourah, R.A., Al Dawawsi, R.R., Tayb, O.M., Al-Shobaili, A.M., Zowawi, H.M., Al-Qhatani, A.M., 2014, Economic evaluation of clay in the East of Tabuk Region, Kingdom of Saudi Arabia: Saudi Geological Survey Technical Report SGS-TR-2013-6, 21 p., 25 figs., 10 tables, 1 app.