Chemical Composition: Top
XRF data from Artax 1
Alloy: Leaded Brass
Alloying Elements: copper, lead, zinc
Other Elements: tin, iron, arsenic
Middle
XRF data from Artax 1
Alloy: Leaded Brass
Alloying Elements: copper, lead, zinc
Other Elements: tin, iron, nickel
Bottom
XRF data from Artax 1
Alloy: Leaded Brass
Alloying Elements: copper, lead, zinc
Other Elements: tin, iron, arsenic
K. Eremin, January 2014
Chemical Composition: ICP-MS/AAA data from sample, Leaded Brass and Mixed Copper Alloy:
Point 1: Cu, 72.41; Sn, 1.6; Pb, 8.26; Zn, 16.91; Fe, 0.17; Ni, 0.05; Ag, 0.09; Sb, 0.07; As, 0.44; Bi, less than 0.025; Co, 0.008; Au, less than 0.01; Cd, less than 0.001
Point 2: Cu, 72.92; Sn, 2.05; Pb, 6.08; Zn, 18.18; Fe, 0.15; Ni, 0.06; Ag, 0.12; Sb, 0.08; As, 0.36; Bi, less than 0.025; Co, 0.006; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Technical Observations: The patina is very dark, almost black, with a faint green cast. The stand is a pastiche in its present condition. It appears to have been cast in at least two sections. A third section (1.6 cm high) currently attached to the upper segment is also ancient, but its patina is different from the other two, and it was probably added in an early restoration. The surfaces were sawn and ground flat where they meet, and a modern threaded rod holds the parts together, including the lower base section. Lead solder is present in the hollow of the lower base section. This solder could be old or part of the restoration.
Drips and wax manipulation marks at the bottom of the base are related to melting and applying the wax to a mold to form the outer surfaces. The shallow incised lines in both the upper and lower sections are irregular but appear to have been turned at a slow speed, either in the wax model or in the brass cast. Circular burnish marks at the bottom side of the “dish” are concentric and are the result of finishing either the wax or brass surface by rotating it along its axis.
Henry Lie (submitted 2001)