[meteorite-list] Haxtun Repost for M. Masse

From: Robert Beauford <wendirob_at_meteoritecentral.com>
Date: Thu Apr 22 09:41:53 2004
Message-ID: <009f01c07603$faab8ca0$3d4897cc_at_wendirob>

I've been struggling to understand the H and L Chondrite classification
structure, but it keeps eluding me. I'll get it eventually, but please
forgive me if the questions are ignorant at this point.
I thought that free metal was the determiner for H or L groups. How do the
pyroxene and olivine makeup affect the H or L grouping?
What do the numbers in the olivine and pyroxene values signify that alters
the grouping?
Thanks!
-Robert Beauford

> Matteo Chinellato wrote:
> > Haxtun classification is H/L4, but in the Catalogue ... L4
> Hello Matteo and List,
> Haxtun was classified as an i n t e r m e d i a t e type by A.E.
> Rubin. Its olivine value (Fa24.6 ± 0.4) makes it an L chondrite but,
> on the other hand, its pyroxene value (Fs17.8 ± 1.3) clearly makes
> it an H chondrite. There is a paper by A. Rubin about such ordinary
> chondrites with atypical mineral compositions.
>
> Best wishes,
>
> Bernd
>
>
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Received on Wed 03 Jan 2001 11:07:52 PM PST