Chemical Composition: XRF data from Artax 1
Alloy: Mixed Copper Alloy
Alloying Elements: copper, tin, lead, zinc
Other Elements: iron, nickel, silver, antimony
K. Eremin, February 2014
Technical Observations: The patina is a dark green, red, brown, and black surface. The lid has a grayish surface that may be a white metal, such as tin or silver. The metal is deformed and cracked below the hinge. The bowl was fabricated by hammering and raising from sheet metal with the design chased from the exterior. The lid was probably cast as a billet and then hammered out flat. It has rough marks from finishing, scribed designs, and what looks like a possible plating of tin. The latch and hinge were made from sheet metal attached mechanically with rivets. The pin in the hinge has hammered ends.
An XRF analysis on Aug. 5, 2002 detected zinc on the underside of the lid, indicating it is brass. Tin was detected on top side of lid from the area under the latch, which may indicate that the lid was tinned. It is also possible the tin is in the alloy, although the XRF reading of the underside did not show the same peak.
Carol Snow (submitted 2002)