Meteorite Dagger?

[Jeff Pringle]

Perhaps a better way -
Take a couple months going through the various reference material standards for steels on the web, pulling out the info on the few for which there is trace element data.
Do the same for iron meteorites.
Pick a couple trace elements that aren't typically manipulated in steel production, say Ag, Au, As, Ge, Ta, Zr, Hf, La; the earth steels should plot in one area (or along a single line) when comparing two elements, meteoric metal in one or more areas outside or overlapping - the 'right' pair of elements should allow good discrimination.
You might be able to get the same result by comparing Ni to Co, or P to S; but since those are manipulated elements they might not graph well.
Get a keris tested, it should fall between the two areas, if it's a mix of the two metals - and you've only paid for one lab test!
You'll have to put in some hours with the Excel program's chart function, though
Bonus, you could publish an article in a scientific journal or popular magazine once you're done!
http://www.nist.gov/srm