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Originally Posted by Athanase
I think that the only way to know the presence or not of meteoritic materials in a blade is by a very thorough analysis of the chemical composition (mass spectrometry). The meteorite still contains elements that are very rare on earth (like Iridium for example). The detection of its trace elements much greater proportion than for terrestrial materials could provide evidence.
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Actually, X-ray fluorescence (XRF) would probably be the best analytical method as it is non-destructive, and would indicate the nature and amount of various metals detected at the surface of the blade. Small portable and hand-held devices are now available.