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Originally Posted by A. G. Maisey
As for identifying meteoritic material after it has been forged, well, the famous historical metallurgist Professor Jerzy Piaskowski of Poland cannot advise of any way in which this can be done, and judging from the response I have had from other analytical metallugists spread across the globe, including a couple who specialise in analysis of meteorites, nobody else can tell us how to do it either.
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I am a bit surprised that people who analyze meteorites do not know how to do this. The answer is in the trace elements, they are the fingerprint for cosmic origin. Arizona State University, Center for Meteorite Studies has been using an Electron Microprobe for years to do qualitative/quantitative analysis for meteorites and trace element amounts. The question is, getting someone to do this test (it requires polishing a small area of the surface) on a non-meteorite, and putting a number of blemishes on you otherwise beautiful sword. (Well, there is the issues of sample size).
FYI:
http://meteorites.asu.edu/
http://probelab.geo.umn.edu/
http://geoinfo.nmt.edu/labs/micropro...tion/home.html