white, calcium-based ground (gypsum)

Ingredients

calcium, gypsum

Preparation Steps

Original Recipe Text

Calcium-based white ground (gypsum) used as a repair material for regilding areas of loss (p. 91).

Evidence

"The white ground material used for the repairs is identical to the ground used for the gilded backgrounds of a group of miniatures that were added to the manuscript at the end of the fifteenth century."

Remarks

Used for a repair campaign concomitant with the renovation of the Romanesque picture cycle in the late 15th century. This ground is noted as identical to the ground used in the added miniatures, suggesting a consistent workshop or period of renovation (p. 92).