Abstract
A comparison was made of the solid-state29Si,27Al and43Ca MAS NMR spectra of the outer casing stone from Snefru's Bent Pyramid in Dahshour, Egypt, with two quarry limestones from the area. The NMR results suggest that the casing stones consist of limestone grains from the Tura quarry, cemented with an amorphous calcium-silicate gel formed by human intervention, by the addition of extra silica, possibly diatomaceous earth, from the Fayium area. © 2010 Published by Elsevier B.V.
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MacKenzie, K. J. D., Smith, M. E., Wong, A., Hanna, J. V., Barry, B., & Barsoum, M. W. (2011). Were the casing stones of Senefru’s Bent Pyramid in Dahshour cast or carved? Multinuclear NMR evidence. Materials Letters, 65(2), 350–352. https://doi.org/10.1016/j.matlet.2010.10.035
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