<HTML>Hi Anthony,
I thought all I had to do was quote Mary Poppins for the big word prize? See how behind the times I am?
Seriously, my reply to sandy indicates what I was trying to do by presenting the chemical similarities here. As to the bath water issue, I guess I hadn't gotten there yet... I was too micro-focussed on the issue of whether it is really possible to make artificial stone that "looks" exactly like the real thing. And especially if chemically it was found to also "walk" like the real thing, then I would have to consider it a much more serious issue to simply call it a "duck" at that point. For your bigger issue, I would think that such issues as whether enough kaolinite was available, whether kaolinite is as easily disaggregated thru wetting as Davidovits implies, and whether one is willing to accept the advanced technology testing of the pyramid samples as conclusive that natural stone is natural stone (no if, ands, or buts) are the key issues to check out. I'm presently trying to do that thanks to some articles that Chris Dunn was willing to share (see his very first post above).
Litz</HTML>
