2. Towards a restoration method for blackened minium

2.1 Thermal decomposition of plattnerite: a possible way forward

To restore the original appearance of blackened areas (figure 2 ), the principle of a restoration method must enable the plattnerite produced during pigment transformation to be converted into minium, according to the following reaction balance:

3 β - {PbO}_{2} \to {Pb}_{3} O_{4} + O_{2}

...

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Towards a restoration method for blackened minium

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Bibliography

(1) - FITZHUGH (E.W.) - Red lead and minium. - In : Artists' Pigments : A Handbook of their history and characteristics, éd. National Gallery of Arts, Oxford University Press, vol. 1, p. 109 (1985).
(2) - VITRUVE - Comment il faut préparer le minium et De...

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