Sacrificial knife (tumi) - Cu-As Alloy - Peru - Cu Alloy

Christian. Degrigny (HE-Arc CR, Neuchâtel, Neuchâtel, Switzerland) & Gerber. Alice (HE-Arc CR, Neuchâtel, Neuchâtel, Switzerland) & Valentin. Boissonnas (HE-Arc CR, Neuchâtel, Neuchâtel, Switzerland)

Complementary information

The original archaeological context is unknown, so there is very little information about the culture of origin and no exact dating. The object entered through a purchase and donation to the museum.

The schematic representation below gives an overview of the corrosion layers encountered on the object from a first visual macroscopic observation

Scott, D. Copper and Bronze in Art: Corrosion, Colorants, Conservation. Getty Conservation Institute, Los Angeles, 2002.

Robbiola, L. Caracterisation de l'altération de bronzes archéologiques enfouis à partir d'un corpus d'objets de l'âge du bronze. Mécanismes de corrosion. Université Pierre et Marie Curie - Paris VI, 1990.

Gutknecht, 2018 : Gutknecht Naïma. La corrosion active sur les alliages cuivreux archéologiques - Evaluation de la stabilisation par biopassivation fongique. Mémoire de Master, Haute École Arc Necuhâtel, Conservation-Restauration, non-publié, 2018.