Why this rock is probably not a meteorite:
1) This rock contains metallic iron (the shiny areas) and is magnetic,
as do many ordinary chondrites. However, we analyzed the metal and
it contains only a very low concentration of nickel, <1%. Metal
in meteorites has 5% or more nickel.
2) The rock contains vesicles and meteorites don't have vesicles.
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What is it?
This is a piece of slag. The presence of vesicles means that this
"rock" was once molten and that gas bubbles were trapped
inside. With very few exceptions, asteroidal meteorites were never
molten.
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