Chemical Composition: ICP-MS/AAA data from sample, Bronze:
Cu, 93.38; Sn, 5.07; Pb, 0.56; Zn, 0.002; Fe, 0.13; Ni, 0.23; Ag, 0.03; Sb, less than 0.02; As, 0.59; Bi, less than 0.025; Co, 0.014; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Technical Observations: The patina is green and dark green over a thin layer of red. Four holes near the tail at the back are the result of porosity caused by bubbles trapped in the metal during casting.
The ox is a solid cast. The modeling of the eyes, horns, and other small features is soft in texture and was done directly in the wax model using added bits of wax. It is likely that the entire model was made directly in the wax. Fine raised lines on the bottom between the legs are not mold lines. Rather, they appear to be ridges where metal flowed into fine cracks in the investment used to cast the bronze.
Henry Lie (submitted 2002)