You made a point Nechesh, and a stone doesn't make a pamor blade unless you heat it and collect the possible nickle and use it, but that is unlogical.
And I'm aware of the fact that different metalls were used to make a pamor blade without nickle.
I did read the dutch version of Tammens and I don't find mentioned that dr. Groneman was told that the metall came from a meteor. But it is very good possible like you put it. But when they told him the metall was from a meteor, our scientist wasn't acting very scietific