[meteorite-list] ALOD vs ACAP

From: Martin Altmann <altmann_at_meteoritecentral.com>
Date: Fri, 26 Oct 2007 22:46:55 +0200
Message-ID: <00ee01c81811$5aa802d0$177f2a59_at_name86d88d87e2>

Here's a more recent article, about the relation of Acap-Lod and models of
the parent body:
http://www.lpi.usra.edu/meetings/lpsc2007/pdf/2254.pdf

Best too
Martin

-----Urspr?ngliche Nachricht-----
Von: meteorite-list-bounces at meteoritecentral.com
[mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von
bernd.pauli at paulinet.de
Gesendet: Freitag, 26. Oktober 2007 22:20
An: meteorite-list at meteoritecentral.com
Betreff: [meteorite-list] ALOD vs ACAP

Greg inquired: "What is the average grain size for the ACAP grouping being
discussed"

HUTCHISON R. (2004) Meteorites: A Petrologic, Chemical, and Isotopic
Synthesis (Cambridge Planetary Science Series, pp. 506)-Excerpt, p. 252:

Table 8.2 Properties of primitive achondrite groups
Grain size:
Acapulcoites: 150-230?m (= 0.15-0.23 mm)
Lodranites: 340-700?m (= 0.34-0.70 mm)

Well, as for my NWA 2871 thin section, I find grains measuring 0.42, 0.52,
0.59 mm.
That would be an average grain size of 0.51 mm for these three counts - well
within
the range for lodranites but bulk rock composition (see my previous post to
the List)
may speak a different language.

I'm still waiting for John Kashuba and Roger Warin to chime in. Friday, May
18, 2007,
Roger and myself exchanged emails re: Tafassasset and NWA 2871 and Roger
wrote:

?Voil? comme je d?finissais l'acapulcoite NWA 2871: ... ?

Well, let's leave it up to Roger what exactly he wrote but I am sure several
list
members would appreciate his assessment very much - Roger are you out there?


Best wishes,

Bernd




To: gmhupe at htn.net
    meteorite-list at meteoritecentral.com

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Received on Fri 26 Oct 2007 04:46:55 PM PDT