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No. 120: Nov-Dec 1998

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Pyramid stones not "cementitious"

In SF#119, we followed the item on artificial basalt with a comment about J. Davidovits' claim that the stone blocks of the Giza pyramids are actually made from a limey cement and poured on-site. No long-distance hauling and lifting into place required! We have since found (serendipitously) an authoritative refutation of Davidovits' claim.

K.D. Ingram et al analyzed stone samples from the Giza pyramids using scanning electron microscopy, electron diffraction by X-rays, powder X-ray diffraction, inductive coupled plasmography, Fourier-transform infrared spectroscopy, and other techniques. Their conclusion:

"...the pyramids are made of limestone and are not cementitious in nature."

(Ingram, Kevin D., et al; "The Pyramids -- Cement or Stone?" Journal of Archaeo logical Science, 20:681, 1993.)

From Science Frontiers #120, NOV-DEC 1998. 1998-2000 William R. Corliss

Science Frontiers Sourcebook Project Reviewed in:


  • "A sourcebook of unexplained phenomena is therefore a valuable addition to a collection of scientific literature. William R. Corliss has provided this in the past with his source books of scientific anomalies in several subjects, and now he has provided it for astronomy. He has done an excellent job of collecting and editing a large amount of material, taken in part from scientific journals and in part from scientific reporting in the popular or semi-scientific press." -- "The Mysterious Universe: A Handbook of Astronomical Anomalies", reviwed by Thomas Gold, Cornell University, in Icarus, vol.41, 1980

  • "An interesting, systematic presentation of unusual weather [..] This book is recommended for a general audience" --"Corliss, William R., Tornados, Dark Days, Anomalous Precipitation, and Related Weather Phenomena, Sourcebook Project, 1983.", revieweed in Choice, September 1983
  • "..the science is necessarily somewhat speculative, but Corliss's symthesis is based on reputable sources." -- "Corliss, William R. (Compiler). Lightning, Auroras, Nocturnal Lights, and Related Luminous Phenomena" reviwed by Joseph M. Moran, Univ. of Wisconsin in Science Books and Films, Sep/Oct 1983

  • "Before opening the book, I set certain standards that a volume which treads into dangerous grounds grounds like this must meet. The author scrupulously met, or even exceeded those standards. Each phenomenon is exhaustively documented, with references to scientific journals [..] and extensive quotations" -- "Book Review: The moon and planets: a catalog of astronomical anomalies", The Sourcebook Project, 1985., Corliss, W. R., Journal of the Royal Astronomical Society of Canada, Vol. 81, no. 1 (1987), p. 24., 02/1987