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Hello all,
I want to ask the group their opinion on whether they agree
with the latest book from Norton that places mesosiderites in the achondrite
section, rather than the stony-iron section of the book. As I understand it, he
"suggests" that mesosiderites are merely impact melts of the howardite/eucrite
parent body with an iron body. Similar to H and L impact melts.
Personally, I agree with this concept after
comparing Chico (L6 IMB), Sahara 98362 (H6 IMB) and the new Gao (b)
(H5? IMB) with slices of mesosiderites Vaca Muerta and
Ethersville.
Vaca Muerta looks like the H and L IMB's, while the
Ethersville I have has larger pockets of metal than the others...but similar to
some of "normal" Gao I have.
Will mesosiderites one day be renamed
Howardite impact melts or Eucrite impact melts?
I may be going too fast here, but the suggestion in the Norton
book leads a novice like me down that path.
Wondering???
John Divelbiss
Reading, PA
IMCA 2006
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