You're certainly right about that, Jeff. To be honest, I only read the thread because I'd just finished reading about the "Arctic Iron Age"--where the Inuit and Dorset peoples before them made tool blades out of meteoric iron for, I don't know, a thousand years or so. Another story.
Anyway, I think it'd be a great subject for a metallurgy/archeology PhD--looking at Indonesian blade making, and determining how much of the steel's chemical composition/isotopic signature depends on the metal source, how much depends on the carbon and fuel sources, and how much depends on the arsenic staining (at least in the keris blades). It would be interesting to know if there is enough information to determine things like blade origin (or origin of materials) or blade age through a test.
Not something I'd want to do, although I'd be happy to help analyze the data for patterns. Oh well, something to dream about.
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