Hello Bob, All,
Metal protrusions like that are common on cleaned irons. They are
usually slivers of fresh metal formerly surrounded by oxide that are
exposed via cleaning.
Since we have no evidence that Baygorria is or ever was actually
distinct from Campo del Cielo, I wouldn't be so bold as to
Except that I can't remember if we identified the protrusion.
Long ago I remember someone suggesting that it might be a mineral inclusion
that is differentially resistant to weathering, like silicates, or carbides,
like the cohenite in this image:
http://www.mindat.org/photo-8081.html
But
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