Chemical Composition: XRF data from Artax 1
Alloy: Mixed Copper Alloy
Alloying Elements: copper, tin, zinc
Other Elements: lead, iron, silver, arsenic
XRF data from Tracer
Alloy: Mixed Copper Alloy
Alloying Elements: copper, tin, zinc
Other Elements: lead, iron, silver, antimony, arsenic
K. Eremin, January 2014
Chemical Composition: SEM-WDS data from sample, Mixed Copper Alloy:
Cu, 87.4; Sn, 9.1; Pb, nd; Zn, 2.6; Fe, 0.40; Ni, nd; Ag, nd; Sb, 0.11; As, 0.31; Co, nd
Comments: Copper (zinc) sulfide inclusions.
R. Newman, June 2015
Technical Observations: There large areas of preserved bright metal on the surface. Areas of green have a nodular texture and are convincing as the product of long-term burial. Where the green has been disrupted, underlying red is present. Some edges are completely mineralized, with red penetrating through the sheet. Most of the surface is perfectly preserved, but some areas have significant corrosion. Sections of the edges and corners have broken off and are lost.
The very thin sheet was formed by hammering. The decorations were made by punching at 90 degrees to the surface with two or more elongated punches. A round punch was used to make the c. 20 circles of dots around the field. The holes at the corners for mounting the object were made with a pointed tool working from the front.
Henry Lie (submitted 2012)