28-11-2025, 02:17 PM
(This post was last modified: 28-11-2025, 02:21 PM by Bluetoes101.)
(28-11-2025, 11:41 AM)Koen G wrote: You are not allowed to view links. Register or Login to view.I wonder with minerals like these, do they have to come from a natural deposit? Or can trace amounts be explained by some chemical processes taking place during ink preparation, with contaminants etc?
It's not my area, but recently there have been a couple of cases of it popping up in scans of paintings.
Some reports claim this is due to the environment the work was kept in at some stage of it's life (not part of the paint).
I should also say that I have no idea at all if "a mixture of palmierite (K2Pb(SO4)2) and anglesite (PbSO4)" makes this an entirely different thing or not, or if its ok to just connect palmierite to palmierite.
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This is what the news article is referencing I believe - You are not allowed to view links. Register or Login to view.