[meteorite-list] Stony-iron Parent Bodies

From: Rhett Bourland <rbourlan_at_meteoritecentral.com>
Date: Thu Apr 22 09:43:33 2004
Message-ID: <IOEBKAHMGFBDJMOFGDFNMEJCCIAA.rbourlan_at_evansville.net>

For anyone who may be interested I'm getting some pieces of a unique
stony-iron parent body in next week. I'll soon have four slices of Eagle
Station in and am currently accepting offers.
You can see pictures of them here at
www.asteroidmodels.com/meteoritesales.htm Almost all pallasites come from
the same parent body except the pyroxene pallasites and the three members of
the Eagle Station grouplet. This is also a good chance for all you type
collectors out there to fill a hole in your collection that you hardly ever
have.

Rhett Bourland
www.asteroidmodels.com
www.asteroidmodels.com\personal

-----Original Message-----
From: meteorite-list-admin_at_meteoritecentral.com
[mailto:meteorite-list-admin_at_meteoritecentral.com]On Behalf Of Robert
Verish
Sent: Saturday, July 21, 2001 1:51 PM
To: meteorite-list_at_meteoritecentral.com
Cc: dgweir_at_earthlink.net
Subject: [meteorite-list] Stony-iron Parent Bodies


Speaking of "unique parent bodies", what is the
general consensus on the number of parent bodies to
account for all the various stony-irons? Is this new
classification scheme developing because of new
pairings?

Bob V.

---------- Original Message ---------------
Subject: Re: [meteorite-list] Mt. Egerton

David Weir dgweir_at_earthlink.net
Sat, 21 Jul 2001 14:21:53 -0400

Hello Dave and Mike,

I think it's also practical to rethink the terms
chondrite and achondrite as useful classification
parameters. We now have the achondrite acapulcoite NWA
725 (Tissemoumine) which has distinct chondrules,
along with relict chondrules in Monument Draw. And
there are
a few carbonaceous chondrites that have experienced
complete aqueous alteration of their chondrules to the
point of obliteration (an aqueous achondrite?). And
what about chondrites that have not experienced
igneous conditions, but instead have been totally
recrystallized by the heat of impact, sometimes
classified as petrologic grade 7 (an impact
achondrite?).

But just as we can choose to use the relatively
general term mesosiderite, it's really a matter of how
detailed the information is that you wish to convey. A
simple division into stones, irons, and stony-irons
may suffice for some situations, but even the option
to
split the classification scheme into unique parent
bodies is becoming more possible each year.

Regards,

David


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Received on Sat 21 Jul 2001 07:49:40 PM PDT