I am the inventor of the Texas Chrysotype process. View Camera published an article on the process in the March/April 2012 issue. I presented the process at the 2013 Alternative International Photographic Symposium in Santa Fe. The Texas Chrysotype perfects printing with gold: not only is it a dry print out process,requiring no paper hydration before, during or after priting; but it also expands the tonal range of gold to 9 to 11 or so stops, eliminates grain, and for the most part eliminates color, allowing gold to render in black and white with neutral grays. Lighter weight papers and a wetter brush still tend to result in red, brown or purple print out, but even that can be mitigated with a first bath in ice cold 2% sodium sulfite.
I have also perfected:
dry print out pure platinum
dry print out pure palladium
dry print out Ziatype
and developed a formula for mixing platinum and gold together (each in 10% solution) to print not colors but a hybrid that has a three dimensional plasticity combined with strong Dmax, delicate highlights and no grain.
Photography. Reinventing the traditional printing processes with noble metals.