[meteorite-list] Metachondrite(s)
Impactika at aol.com
Impactika at aol.com
Thu Oct 21 03:15:04 EDT 2010
Thank you Bernd,
Yes a metachondrite is a meta(morphic) chondrite, nothing to do with
lithologies.
A good example of a CR Meta-chondrite is of course Tafassasset.
Goodnight.
Anne M. Black
_www.IMPACTIKA.com_ (http://www.IMPACTIKA.com)
_IMPACTIKA at aol.com_ (mailto:IMPACTIKA at aol.com)
President of IMCA
_www.IMCA.cc_ (http://www.IMCA.cc)
In a message dated 10/21/2010 12:36:46 AM Mountain Daylight Time,
bernd.pauli at paulinet.de writes:
Good morning Steve, Greg and List,
Greg S. wrote: "I understand a metachondrite to be a chondrite that has
undergone
metamorphism resulting in recrystalization. The composition is much the
same as
in the original chondrite. There are different affinities, such as 'H' 'L'
or 'LL'.
I think there are others including E's and 'C' chondrites."
That's right. One further, important aspect is that they are all virtually
without
(relic) chondrules, devoid of chondrules with a few minor exceptions. See
here:
http://www4.nau.edu/meteorite/Meteorite/Metachondrites.html#En
Best morning wishes,
Bernd
Anne M. Black
http://www.impactika.com/
IMPACTIKA at aol.com
Vice-President, I.M.C.A. Inc.
http://www.imca.cc/
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