Chemical Composition: ICP-MS/AAA data from sample, Leaded Bronze:
Cu, 72.48; Sn, 6.81; Pb, 19.94; Zn, 0.519; Fe, 0.06; Ni, 0.04; Ag, 0.06; Sb, 0.09; As, less than 0.10; Bi, less than 0.025; Co, less than 0.10; Au, less than 0.01; Cd, less than 0.001
J. Riederer
Chemical Composition: Fibula
XRF data from Artax 1
Alloy: Mixed Copper Alloy
Alloying Elements: copper, tin, lead, zinc
Other Elements: iron
Pin
XRF data from Artax 1
Alloy: Mixed Copper Alloy
Alloying Elements: copper, tin, zinc
Other Elements: lead, iron
K. Eremin, January 2014
Technical Observations: The surface of the fibula is a uniform greenish gray color with spots of red. The fibula was cast in one piece, except for the pin and the fine metal rod to which it is hinged. The latter was probably inserted into the hollow crossbar through an opening at one end. The pin would have been hinged onto the rod at the opening cut into the center of the cross bar as the rod was pushed through. The pin was fabricated from an elongated piece of copper alloy sheet metal, and the long edges were hammered inward to round the sheet out and bring it to a point. A hook shape was cut into the flat catchplate to create the clasp for the pin. The zigzag decorations on the side of the catchplate may have been created using a long, straight punch in the metal.
Francesca G. Bewer (submitted 2012)