[meteorite-list] NWA 5400: Earth-Related Meteorite

From: Stuart McDaniel - Action Shooting Supply <actionshooting_at_meteoritecentral.com>
Date: Wed, 9 Jun 2010 20:30:32 -0400
Message-ID: <40DDCC59CF9D4997BA925688696DDC77_at_toshibauser>

So this could be a piece of Earth before Earth was Earth??


Stuart McDaniel
Lawndale, NC
Secr., CCAS
----- Original Message -----
From: "Greg Hupe" <gmhupe at htn.net>
To: <meteorite-list at meteoritecentral.com>
Sent: Tuesday, June 08, 2010 7:31 PM
Subject: [meteorite-list] NWA 5400: Earth-Related Meteorite


> Dear List Members,
>
> I would like to announce an important new meteorite that has been under
> intense analysis over the last two years by a select group of scientists
> from around the world...
>
> NWA 5400: Earth-Related Ungrouped Meteorite
>
>
> Northwest Africa 5400 may be a sample from a large asteroid or dwarf
> planet, which accreted in the early solar nebula in the vicinity of
> proto-Earth or Theia. NWA 5400 has oxygen isotope ratios indistinguishable
> from those of rocks from the Earth and the Moon, which plot on the TFL
> (Terrestrial Fractionation Line). A precise formation age has not yet been
> measured, but it cannot be older than 4.54 billion years, which likely
> makes NWA 5400 anomalously young among primitive achondritic objects from
> the early Solar System. It is generally accepted that the Earth-Moon
> system was created when Theia collided with proto-Earth about 4.3 billion
> years ago. Is it possible that NWA 5400 is somehow related to this
> phenomenal event?
>
>
>
> NWA 5400 adds valuable understanding of events that took place in the
> early evolution period of the Solar System. After two years of intense
> analysis, scientists at prominent institutions from around the world
> continue to diligently study this 'stand-alone' meteorite, which will add
> to the already incredible information NWA 5400 has to offer.
>
>
>
> Link to 2009 LPSC abstract on NWA 5400:
>
> http://www.lpi.usra.edu/meetings/lpsc2009/pdf/2332.pdf
>
>
>
> Link to 2010 LPSC abstract on NWA 5400:
>
> http://www.lpi.usra.edu/meetings/lpsc2010/pdf/1492.pdf
>
>
>
> NWA 5400 has a Total Known Weight of 4.818 kg in a single stone that was
> discovered in Northwest Africa in 2008. The chocolate-brown mottled matrix
> takes an extremely nice polish, which reveals the dazzling olivine
> crystals exhibited in this scientifically important new meteorite!
>
>
>
> Cross-polarized light optical thin section image of NWA 5400 (width of
> field = 1.2mm):
>
> http://www.lunarrock.com/NWA5400/nwa5400xpl.jpg
>
>
>
> Image of 58.9-gram complete slice with hologram-like olivine crystals that
> dance across the polished surface when tilted from side to side:
>
> http://www.lunarrock.com/NWA5400/nwa5400slice.jpg
>
>
> Best regards,
> Greg
>
> ====================
> Greg Hupe
> The Hupe Collection
> NaturesVault (eBay)
> gmhupe at htn.net
> www.LunarRock.com
> IMCA 3163
> ====================
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>
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Received on Wed 09 Jun 2010 08:30:32 PM PDT