Octagonal cap with external ridges - Zn/Ni/Cu/Sn/Pb/Al - Modern Times - France

Mathea. Hovind (University of Oslo, Department of archaeology, conservation and history (IAKH-UiO), Oslo, Oslo, Norway)

Complementary information

An identical cap exists, originating from the same location. 

The schematic representation (Fig.X) gives an overview of the corrosion layers encountered on the object from a first visual macroscopic observation. 

Fig. X: Preliminary Micorr stratigraphy no. 1. Exact location is illustrated in Figs. x and x.
Fig. X: Preliminary Micorr stratigraphy no. 2. Exact location is illustrated in Figs. x and x.
Fig. X: Preliminary Micorr stratigraphy no. 3. Exact location is illustrated in Figs. x and x.

Complementary information

The artefact was considered a test material and could therefore be sampled extensively.

 

XRF, metallography, 

The metal is a complex alloy consisting of Zn/Ni/Cu/W/Sn/Pb/Al, with trace elements of Si, Co, Sb and Mn.