Chemical Composition: ICP-MS/AAA data from sample, Brass:
Point 1: Cu, 79.44; Sn, less than 0.25; Pb, 1.05; Zn, 18; Fe, 0.76; Ni, 0.02; Ag, 0.01; Sb, less than 0.05; As, 0.72; Bi, less than 0.025; Co, less than 0.01; Au, less than 0.01; Cd, less than 0.001
Point 2: Cu, 80.32; Sn, less than 0.25; Pb, 1.37; Zn, 16.74; Fe, 0.76; Ni, 0.01; Ag, 0.01; Sb, less than 0.02; As, 0.78; Bi, less than 0.025; Co, less than 0.005; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Chemical Composition: XRF data from Artax 2
Alloy: Brass
Alloying Elements: copper, lead, zinc
Other Elements: tin, iron, arsenic
K. Eremin, June 2015
Chemical Composition:
Lead Isotope Analysis (Pb, 1.05 to 1.37%):
Pb206/Pb204, 18.64420; Pb207/Pb204, 15.65249; Pb208/Pb204, 38.75786; Pb, 207/Pb206, 0.83954; Pb 208/Pb206, 2.07882; Pb208/Pb207, 2.47615
P. Degryse
Technical Observations: The bronze is a solid lost-wax cast and structurally sound, with a green patina. Chisel-like tool marks from wax shaping are visible on the ram’s chest behind its forelegs. The ram’s face was textured, probably in the wax, with a small oval punch. Its body and legs were textured with a larger, round punch. The top and sides of the nose, and top of the head and neck have scratches from abrasive smoothing of the metal. A small abrasion of bright metal appears at the left ear, but cuprite appears at numerous locations. The corrosion layers are fairly thick and deep, which suggests that the piece may have been buried for a long time. The high zinc content indicates a Roman date; the presence of arsenic rules out a modern forgery. The patina ranges from dark green to tan.
Tony Sigel (submitted 1999)