[meteorite-list] Bernd commentary on NWA 1955
From: tett <tett_at_meteoritecentral.com>
Date: Thu Apr 22 10:32:47 2004
I would like to buy a covered section of NWA1955. Any left?
Mike Tettenborn aka tett
Owen Sound, Ontario
----- Original Message -----
From: "Michael L Blood" <mlblood_at_cox.net>
Sent: Sunday, March 07, 2004 6:10 PM
Subject: Re: [meteorite-list] Bernd commentary on NWA 1955
> Hi all,
> Matt Morgan was kind enough to sell be some of his unique
> NWA 1955 which is the only type H/L 3-4. I had thin sections
> made (some with cover sheets and some without, double polished
> - for those who might want to do microprobe work).
> Bernd bought one and was kind enough to share the email
> below with me and Matt, AND to give me permission to foreword
> it to the list....
> "Hello Michael, hello Matt,
> My NWA 1955 thin section pics keep bugging me. The pic I am once
> more attaching here seems to show what might be called a "contact
> zone" where H material crashed into L material or vice versa. Look
> at that sharp horizontal line dividing the pic into two halves.
> [this is photo "1" at:]
> The lower part actually shows 4 different chondrules - magnification
> 32x -- (plus one separate chondrule in the 5 o'clock position):
> (1) an oval, barred olivine chondrule squeezed between two deformed
> POP chondrules
> (2) another large, colorful chondrule with long, thin laths in the 6
> o'clock position
> These 4 chondrules have literally been pushed into/onto each other!
> JPEg #2 (magnification 56x) shows a PP chondrule (porphyritic pyroxene)
> with a large, almost perfect, euhedral pyroxene crystal in the 8 o'clock
> position - that's the "aesthetical" part of the story. This chondrule is
> surrounded (not visible in the pic) by a thick, opaque rim which may
> be serpentine. IF it is serpentine, this would point toward aqueous
> alteration (such rims are well-known from Allende, Axtell, or other
> carbonaceous chondrites).
> What if meteoriticists also find carbonaceous components in NWA 1955?!
> A triple conglomerate: H - L - C? What an exotic personality, this NWA
> Best wishes, Bernd"
> [then, in a later exchange he added]
> "Anyone who is into thin sections and who misses out on this one,
> is to be pitied."
> Photos at:
> When Jesus said "Love your enemies" I think he probably
> meant don't kill them.
> For perspective, try THIS:
> cool message fro Ben & Jerry:
> AMAZING photos of Aurora Borealis, etc.
> Hubble space telescope - AMAZING photos!:
> SUPPORT OUR TROUPS:
> Worth Seeing: Earth at night from satellite:
> - Interactive Lady Liberty:
> Earth - variety of choices:
> Michael Blood Meteorites:
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Received on Sun 07 Mar 2004 07:50:41 PM PST