Vânia S. F. Muralha, Catarina Miguel and Maria João Melo Micro-Raman study of Medieval Cistercian 12–13th century manuscripts: Santa Maria de Alcobaça, Portugal Journal of Raman Spectroscopy 43
The colour palette of a set of fifteen 12–13th centuries manuscripts from Santa Maria de Alcobaça Monastery (Portugal) was determined by Raman microscopy. The Alcobaça collection shows consistently the use of pink and grey paints, mostly achieved by mixing vermilion and/or an organic red or a carbon-based black pigment with lead white, respectively. Other pigments include the ubiquitous lazurite, and vermilion, red lead, lead white and orpiment. Two colours are suffering degradation processes: bottle green and white. The degradation mechanisms are discussed.
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