THE WAY TO THE CALVARY ALTARPIECE

SCIENTIFIC ANALYSES 

Scientific Analyses:

• Analysis of the polychrome decoration, of both reliefs and paintings (19 samples analysed by Mercedes Barrena in the Centre for Conservation and Restoration of the Cultural Property of Castile and León):

- Preparation of gesso and protein glue on both reliefs and backgrounds and in paintings. 

- White lead primer and traces of black smoke in paintings.

- The red of the frame is a coat of minium and vermillion to which red glaze was later applied.

- Blue protein temper.

- In the fleurs-de-lis, traces of rags with linen fibres adhered to the bottom with protein glue.

• Support Analyses: Infrared Spectography, X-Ray Diffraction, Carbon and Sulphur Elemental Analysis, X-Ray Fluorescence:

Baked white clay

*Data taken from the restoration Dossier compiled by the Centre of Conservation and Restoration of the Cultural Property of Castile and León, 2001 (unpublished). Archives of the CCRBC.