Seite - 231 - in The Vienna Genesis - Material analysis and conservation of a Late Antique illuminated manuscript on purple parchment

Hofmann, Rabitsch, Malissa, Aceto, Uhlir, Griesser, Calà, Agostino, Fenoglio 231 tion of the parchment carrier. On the FORS spectra iron gall ink is identified by a typical rising of the graph in the near infrared region (Fig. 16). A detail of the black boots on folio 16, page 32, shows the characterstic appearance of black paint layers in iron gall ink with a cracked surface and losses in the parchment (Fig. 35). Iron gall ink was mainly used for writing since at least the 4th century A. D. The oldest occurrences were identified in the Vercelli Gospels20 and in the Codex Sinaiticus21. Recently it has been shown that the use of iron gall ink as pigment for painting was more common than previously known22. The occurrence of a paint made of iron gall ink in the Vienna Genesis is relevant as it seems to be one of the first evidences recorded so far. 20 Aceto et al., 2008. 21 Moorhead et al., 2015. 22 Aceto et al., 2017. Fig. 35: Microscopic image, 10x magnification, of black boots on folio 16, page 32. Fig. 36: IRR image of the miniature on folio 16, page 32, the accusation of Potiphar’s wife. Open-Access-Publikation im Sinne der CC-Lizenz BY 4.0