21-11-2025, 09:54 AM
(21-11-2025, 07:45 AM)Doireannjane wrote: You are not allowed to view links. Register or Login to view.The ink used was waterproof
It definitely was not. There are many cases where text and drawings were blurred or washed away by spilled liquids or being painted over with runny paint.
(21-11-2025, 07:45 AM)Doireannjane wrote: You are not allowed to view links. Register or Login to view.Copper alloy quills could account for the additional cuprite found.
AFAIK metal quills only became commonly availiable in the 1800s or so. And they were made of steel; copper would wear out much faster. And a copper quill would not shed off enough patina to be detectable.
The copper that McCrone found in inks was trace amounts, not significant.
(21-11-2025, 08:56 AM)Koen G wrote: You are not allowed to view links. Register or Login to view.we know what the inks and pigments are
Actually we do not know what the inks are. We only know that they are iron-based (except the quire numbers, that are probably lampblack, and the red ink of f67r2, which AFAIK has not been analyzed yet), but apparently not iron-gall. We know what some of the paint pigments are (azurite for some of the blue, iron or lead oxides for the browns and rusty-browns); but we don't know what the translucent yellow paint is, and of the green paint we only know that it is copper-based but is not crystalline.
All the best, --stolfi