[meteorite-list] Slice of Heaven - NWA 6566 - AD

From: Greg Hupé <gmhupe_at_meteoritecentral.com>
Date: Mon, 10 Oct 2011 17:07:24 -0400
Message-ID: <C4A157D113F041B09B0F0B9C661A78A2_at_Gregor>

Dear List Members,

A couple days ago I posted a preview link to a new meteorite I would like to
announce - Northwest Africa 6566, a new Polymict Eucrite with a low Total
Known Weight of just 145 grams in a single stone.

This exciting meteorite has a very busy matrix with rare diogenite clasts,
basaltic xenoliths and a shock rating of 2-4. I purchased this from a dealer
at the 2011 Tucson Show. A very small end piece was initially sent to Ted
Bunch in 2010 to determine if this stone was a meteorite or not. He
determined that it was a meteorite, but a full type sample would be required
to provide a proper classification. Upon first examination, I thought it
looked very similar to some of the Omani lunar meteorites, but this stone
was discovered in Northwest Africa! Without wanting to let this interesting
meteorite get away, I agreed to the high asking price and submitted the full
type sample after returning home in February.

Here is part of Dr. Bunch' submitted classification to the Meteoritical
Society, the Official entry in the Meteoritical Bulletin is edited and
shortened:

Northwest Africa 6566
Petrography (T. Bunch and J. Wittke, NAU): Shock-melt generated,
fine-grained granular to subophitic basalt matrix with basaltic xenoliths
and rare diogenite and glassy shock melt clasts arranged in flow
orientation. Post crystallization shock, S2-4; weathering grade is low.
Component modes (vol %): matrix, 69: xenoliths, 18; shock melt, 8;
diogenite, 5.
Mineral compositions: Matrix: orthopyroxene Fs64.5Wo4.1, Al2O3 = 3.2 wt %
(FeO/MnO = 28); augite, Fs29.8Wo42.6, Al2O3 = 4.5 wt %; plagioclase, An89.
Diogenite clasts: orthopyroxene, Fs31.1Wo1.5 (FeO/MnO = 27); olivine Fa43.1
(FeO/MnO = 64); chromite cr# = 79.
Classification: Achondrite (polymict eucrite). Unusual eucrite in that a
shock melt liquid was generated either within the parent body regolith or at
shallow depth, enveloped clastic debris during a flow stage, cooled rapidly,
followed by post crystallization partial recrystallization.

I would like to now provide the list of all available specimens which is
only 24 pieces. If you are interested in the price list, please email me
privately. Enjoy the images!

NWA 6566 Polymict Eucrite Specimens:

32.7-gram end cut Main Mass ?
35mm x 34mm x 21mm
1) http://www.lunarrock.com/nwa6566/nwa6566mainmass1.jpg
2) http://www.lunarrock.com/nwa6566/nwa6566mainmass2.jpg

7.37g complete slice ?
52mm x 30mm x 1.5mm
http://www.lunarrock.com/nwa6566/img_0001.jpg

7.32g complete slice ?
40mm x 33mm x 2mm
http://www.lunarrock.com/nwa6566/img_0002.jpg

7.23g complete slice ?
41mm x 32mm x 1.5mm
http://www.lunarrock.com/nwa6566/img_0003.jpg

7.06g complete slice ?
38mm x 33mm x 1.5mm
http://www.lunarrock.com/nwa6566/img_0004.jpg

6.92g complete slice ?
43mm x 31mm x 2mm
http://www.lunarrock.com/nwa6566/img_0005.jpg

6.47g complete slice ?
42mm x 32mm x 1.5mm
http://www.lunarrock.com/nwa6566/img_0006.jpg

6.4g complete slice ?
36mm x 36mm x 1.5mm
http://www.lunarrock.com/nwa6566/img_0007.jpg

6.03g complete slice ?
38mm x 34mm x 1.5mm
http://www.lunarrock.com/nwa6566/img_0008.jpg

6.01g complete slice ?
35mm x 35mm x 1.5mm
http://www.lunarrock.com/nwa6566/img_0009.jpg

2.42g complete slice ?
50mm x 29mm x 1mm
http://www.lunarrock.com/nwa6566/img_0010.jpg

5.876g part slice ?
37mm x 26mm x 2mm
http://www.lunarrock.com/nwa6566/img_0011.jpg

2.226g part slice ?
30mm x 11mm x 2mm
http://www.lunarrock.com/nwa6566/img_0012.jpg

656mg part slice ?
23mm x 6mm x ~2mm
http://www.lunarrock.com/nwa6566/img_0013.jpg

456mg part slice (wedge cut) ?
14mm x 7mm x ~3mm
http://www.lunarrock.com/nwa6566/img_0014.jpg

228mg fragment ?
7mm x 4mm x 2mm
http://www.lunarrock.com/nwa6566/img_0015.jpg

138mg part slice ?
13mm x 4mm x 2mm
http://www.lunarrock.com/nwa6566/img_0016.jpg

102mg fragment ?
5mm x 5mm x ~1mm
http://www.lunarrock.com/nwa6566/img_0017.jpg

64mg fragment ?
9mm x 2mm x ~2mm
http://www.lunarrock.com/nwa6566/img_0018.jpg

56mg fragment ?
11mm x 2mm x ~1mm
http://www.lunarrock.com/nwa6566/img_0019.jpg

48mg fragment ?
6mm x 4mm x ~1mm
http://www.lunarrock.com/nwa6566/img_0020.jpg

36mg fragment ?
5mm x 3mm x ~1mm
http://www.lunarrock.com/nwa6566/img_0021.jpg

30mg fragment ?
6mmm x 3mm x ~1mm
http://www.lunarrock.com/nwa6566/img_0022.jpg

130mg fragments -
Misc. sizes
http://www.lunarrock.com/nwa6566/img_0023.jpg

Thank you for having a look at this exciting new meteorite!

Best Regards,
Greg

====================
Greg Hup?
The Hup? Collection
gmhupe at centurylink.net
www.LunarRock.com
NaturesVault (eBay)
IMCA 3163
====================
Click here for my current eBay auctions:
http://search.ebay.com/_W0QQsassZnaturesvault
Received on Mon 10 Oct 2011 05:07:24 PM PDT