Abstract
A total of 30 clay samples were collected from the area around Riyadh city, Saudi Arabia. A complete chemical analysis was carried out using different techniques. X-ray diffraction studies showed that the clay samples were mainly of the smectite group with traces of the kaolinite one. The samples studied were classified as nontronite clay minerals. One of the clay fraction has been studied by Mössbauer spectroscopy as raw clay fraction and after being fired at 950–1,000 °C. The Mössbauer spectra showed accessory iron compounds in the form of hematite and goethite. The structural iron contents disintegrate on firing transforming into magnetic iron oxide and a paramagnetic small particles iron oxide.
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International Symposium on the Industrial Applications of the Mössbauer Effect (ISIAME 2012), Dalian, China, 2–7 September 2012.
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Khalil, M.I. Crystal chemistry and Mössbauer spectroscopic analysis of clays around Riyadh for brick industry. Hyperfine Interact 218, 113–121 (2013). https://doi.org/10.1007/s10751-013-0760-6
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DOI: https://doi.org/10.1007/s10751-013-0760-6