Well, Tony Colaprete got back to me: ULA did provide an inventory of potential sources of
volatiles (since the primary mission was to look for water), but did not provide a breakdown for anything else: things like battery electrolytes (13.25 kg), foam insulation (57 kg--chemical composition proprietary), and paint (19 kg--chemical composition proprietary.
As for metals, the vast majority of the mass would be concentrated in the stainless steel oxygen tank (chemical composition proprietary, I'm guessing, but I imagine it's probably some sort of nickel-based Inconel-type steel that can withstand cryogenic temperatures).
Dr. Colaprete did mention there might be some gold coating in the rocket nozzle(s)--I understand that gold plating prevents hydrogen embrittlement from the hydrogen rich steam exhaust. However, no gold foil was used, evidently--correct me if I'm wrong.
As for silver,
"LO2 pumps where contact with the inducer or impeller could result in ignition are coated with silver". And there's probably a bit in the solder in the electronics.
But bottom line is that since silver and gold are used only for plating, the amounts have got to be measured in mere grams.
I assume there's a bit of silver in the soldering for the electronics, but this cannot be more than a few grams, can it? Also,