"Do CV's contain nickel"?
Here's what Jeff Grossman wrote on Monday, April 19, 1999:
In fact, Allende has almost no metal, if what you mean is metallic Fe-Ni.
Jarosewich (1990) measured ~0.5 wt% metallic iron plus nickel in Allende.
Most of the metal in these oxidized CV3 chondrites is the high-Ni alloy
awaruite. There was once low-Ni metal (kamacite), but late stage oxidation
has destroyed it all. There is a big debate going on as to whether this sort of
process happened during parent body aqueous alteration or earlier, in the solar
nebula.
(Jeff Grossman, Metal content in Allende, Mon, 19 Apr 1999, Meteorite Central).
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