[meteorite-list] Mercury Meteorites - the short list

From: Matthias Bärmann <majbaermann_at_meteoritecentral.com>
Date: Sun, 7 Aug 2011 11:05:38 +0200
Message-ID: <EC7CF0725F4A4C57A37CF84EA8B6C47D_at_thinkcentre>

Well investigatively spoken, Sherlock Bernd :-)

Well, but the density of Aubrites is even lower than that of the Enstatite
Cs. (3.12)

What's about the density of Bencubinites? I couldn't find data, but it
should be relatively high, at least higher than Aubrite, Enstatite & Co.

Unfortunately I only can confirm the gray and rainy Southern Germany.
Summer, where art thou :-(

Best,
Matthias


----- Original Message -----
From: "Bernd V. Pauli" <bernd.pauli at paulinet.de>
To: <meteorite-list at meteoritecentral.com>
Sent: Sunday, August 07, 2011 12:23 AM
Subject: [meteorite-list] Mercury Meteorites - the short list


> Hi All,
>
> I would like to remind you of Russ Kempton's article in "Meteorite!"
>
> Kempton R. (1996) Abee: More Questions Than Answers
> (METEORITE! Magazine, Pallasite Press, November, 1996):
>
> "Curiously, the study of light reflected from Mercury's surface
> indicates that it is iron-rich and oxygen-poor - characteristics
> shared with E chondrites".*
>
> ... or with some of their achondritic counterparts: the aubrites.
>
> * In 1998, our late Richard Norton wrote in RFS:
>
> "Their low oxygen content suggests that they formed even closer
> to the Sun than the H-chondrites, possibly inside Mercury's orbit."
>
> NORTON O.R. (1998) Rocks From Space, p. 190, E-Chondrites:
>
> But Mercury's mean density of about 5.4 g/cm^3 is a major problem
> because enstatite chondrites have a density of about 3.4-3.7 g/cm^3.
>
> NWA 011 is also mentioned in the "short list" but here's another obstacle:
>
> ...its high FeO content, a circumstance which implies a parent body with
> a small metallic iron core. Mercury is believed to have a large iron core.
>
> Niquist et al. (2003) suggest that NWA 011 is of asteroidal rather than
> Mercurian origin.
>
> Love S.G. et al. (1995) think it highly likely that there are Mercurian
> meteorites in our collections although they should be rare (probably
> less than 1% of the amount of Martian meteorites in our collections)*.
>
> *Love S.G. et al. (1995) Recognizing mercurian
> meteorites (MAPS 30-3, 1995, pp. 269-278).
>
> Best wishes from rainy
> Southern Germany,
>
> Bernd
>
>
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Received on Sun 07 Aug 2011 05:05:38 AM PDT