Another example of a limestone block with thin calcite veins in it. How would these veins form in a natron geopolymer?

I've done tons of stonework, even with modern manufactured blocks it's hard to get perfect paper thin joints due to the slightest irregularity in the blocks. with larger blocks and heavy equipment it's even harder. Amazing however they did it

That is natural, but the answer to your question is the carbonate from natron can be used to accelerate carbonation of lime/calcium hydroxide into calcite.

You don't actually need Natron to make lime cement. And technically it is not a geopolymer. Here is my take on how I think some of those blocks were made. Also think many were cut, not cast. Why not do both?

It is indeed possible to cold-cast stone. This ash based geopolymer from MondoSTONE displays all the properties of authentic artifacts including fissures where calcite or other chemicals would naturally build up. This geopolymer is porus just like stone so the mechanism for geo-veining is inbuilt. Try it for yourself

They like to ignore these things. Geopolymer is on par with Flat Earth imo

Well said, the veins destroy the geopolymer theory, especially in granite🧐🧠

They are to be seen worldwide !!! Egypt at Giza the walkway to the sphinx has what seems to be red veining !!! Spain on the Mediterranean has whits veins !!!

Experiment: one irregular surfaced block on top of another block. Now vibrate and see if the blocks "sand" each other down smooth and tight. One could also do this without vibration and with an acid.

Better question how was it cut specifically, planned, moved, stacked.

Good point. I'm not sure I buy into the geopolymer idea . No doubt they had a way of softening the stones . At least the technology they were using definitely made the stones react as if they were made of clay .