Okay, this may be indicative of nothing but just going to put it out there anyway. I was reading https://www.geopolymer.org/archaeology/tiahuanaco-monuments-tiwanaku-pumapunku-bolivia/ and there is mention of the effects of carboxylic acids on the stones. In the 1970s kansas UFO case there were traces of hydrophobic carboxylic acid left in a ring. There may be some merit to examining the effects of carboxylic acids on crystal grain boundaries.
Geopolymer Institute conducted chemical composition analysis (EDS) of Puma Punku stone which can be found here: https://youtu.be/ULpenmcHORA?t=989 Presentation also includes some SEM images. Binder supposedly a "thick fluidal red ferro-sialate matrix".
Rube Goldberg
Okay, this may be indicative of nothing but just going to put it out there anyway. I was reading https://www.geopolymer.org/archaeology/tiahuanaco-monuments-tiwanaku-pumapunku-bolivia/ and there is mention of the effects of carboxylic acids on the stones. In the 1970s kansas UFO case there were traces of hydrophobic carboxylic acid left in a ring. There may be some merit to examining the effects of carboxylic acids on crystal grain boundaries.
Geopolymer Institute conducted chemical composition analysis (EDS) of Puma Punku stone which can be found here: https://youtu.be/ULpenmcHORA?t=989 Presentation also includes some SEM images. Binder supposedly a "thick fluidal red ferro-sialate matrix".