Hello Dirk and List,
Dirk, since you would like to promote brachinite material, here is a little
insight you may not be aware of:
NWA 4882 Brachinite (unpaired) - I have made private sales several months
PRIOR to Martin's public offering, at much less than their great price per
gram. I know MY customers are very happy with their greatly discounted rate!
I simply do not have time to offer all of the different and new meteorites I
have at one time publicly, AND I am not trying to interfer with their sales,
but since Dirk brought this out in what I perceive in a negative tone, here
is one heck of a Brachinite for serious collections:
Click here to view complete slice of NWA 4882 measuring 130mm wide!
http://www.lunarrock.com/nwa4882/nwa4882slice.jpg
Click here to view complete NWA 4882 stone before cutting:
http://www.lunarrock.com/nwa4882/nwa4882.jpg
Click here to view close-up of polished NWA 4882 matrix:
http://www.lunarrock.com/nwa4882/nwa4882closeup.jpg
Official Classification:
Northwest Africa 4882
Algeria
Find: July 2007
Achondrite (brachinite)
History: Purchased by Greg Hupé in July 2007 from a dealer in Tagounite,
Morocco.
Physical characteristics: Two dense, dark brown, broken rounded stones (2891
g and 206 g) with weathered fusion crust on some original exterior surfaces
and thin desert varnish coatings on hackly broken surfaces.
Petrography: (A. Irving and S. Kuehner, UWS) Coarse-grained rock (mostly
0.2-0.8 mm) with protogranular texture, composed predominantly of olivine
with subordinate green, Cr-bearing diopside, K-poor plagioclase, chromite,
iron sulfide, and kamacite (partially altered to iron hydroxides).
Plagioclase is interstitial to mafic silicates and is heterogeneous in
distribution. Very fine-grained (2-10 µm), polyphase assemblages composed
mostly of orthopyroxene, Ni-bearing pyrrhotite and Ni-free metal with
variable amounts of fayalite and chromite occur around larger pyrrhotite
grains within olivine, and also as small, isolated apparent inclusions
within olivine.
Geochemistry: Olivine (Fa35.0-35.2, FeO/MnO = 70.9-71.3), clinopyroxene
(Fs9.3Wo47.1, FeO/MnO = 38.6, Cr2O3 = 0.76wt%, Al2O3 = 1.05 wt%),
plagioclase (An32.1- 37.6Or0.3-0.5), chromite [Cr/(Cr + Al) = 0.717, Mg/(Mg
+ Fe) = 0.239, TiO2 = 0.71 wt%, ZnO = 0.30 wt%]. Oxygen isotopes: (D.
Rumble, CIW) Replicate analyses of acid-washed silicate material by laser
fluorination gave, respectively, δ18O = 2.064, 2.095; δ17O = 4.368, 4.455;
Δ17O = -0.234, -0.248 per mil.
Classification: Achondrite (brachinite).
Specimens: A total of 20.4 g of sample and one polished thin section are on
deposit at UWS. GHupé holds the main mass (actually now in a private
collection).
I sent this to a professional cutter who used a wire saw and cut these at
3mm thick and polished to a high luster. If you want a large museum quality
specimen at an even BETTER rate, be sure to contact me off list.
I have already placed over half of this material into large collections,
which only leaves 15 slices and the 206g fragment. Half are the larger
slices like the one featured above.
Best regards,
Greg
====================
Greg Hupe
The Hupe Collection
NaturesVault (eBay)
[EMAIL PROTECTED]
www.LunarRock.com
IMCA 3163
====================
Click here for my current eBay auctions:
http://search.ebay.com/_W0QQsassZnaturesvault
----- Original Message -----
From: "drtanuki" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[email protected]>
Sent: Monday, December 01, 2008 7:38 PM
Subject: Re: [meteorite-list] NEW Olivine Diogenite - NWA 4223 - AD
Hello Tom and List,
I would suggest that you check out the fantastic NWA 5471 brachinite that
Martin and Stefan are selling for a VERY REASONABLE price; more than 2
grams of the material instead of a thin section (you can make your own
thin sections- several).
Thank you Martin and Stefan for your very generous price for such a rare
classification.
Dirk Ross...Tokyo
http://www.meteoritesjapan.com
http://www.insekijapan.com
--- On Tue, 12/2/08, [EMAIL PROTECTED] <[EMAIL PROTECTED]>
wrote:
From: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Subject: Re: [meteorite-list] NEW Olivine Diogenite - NWA 4223 - AD
To: [email protected]
Date: Tuesday, December 2, 2008, 9:23 AM
Hi list members, For those who are interested in thin
sections. Greg has
been kind enough to (previously) lend me the NWA 3151
Brachinite that he has
for sale. My micrograph article in Meteorite Times
December is on this thin
section.
I felt obliged to say it is a wonderful sample prepared
splendidly! I
worked with it up to a magnification of 760X with great
results. If you are
thinking of adding a thin to your collection, I would
recommend this one and check
out the article. Bernd Pauli has provided me with three
excellent wide
field cross polarized light micrographs that are also
included.
Tom Phillips
In a message dated 12/1/2008 4:36:02 P.M. Mountain
Standard Time,
[EMAIL PROTECTED] writes:
Dear List Members,
It is my pleasure to announce a NEW Olivine Diogenite, NWA
4223, the third
member of this exclusive group. It took me three years to
get to this point
of first public offering so you know the science has been
done! It has a TKW
of just 329 grams and is very course-grained. I managed
through eBay's site,
so you can find all of the available material and
"Official" classification
of NWA 4223 with the "Buy it Now" feature here:
http://search.ebay.com/_W0QQsassZnaturesvault
In addition to these rare specimens, I have also listed
these, most at
reduced prices for the holidays:
NWA 1878 Mesosiderite (Fantastic etch!)
NWA 1879 Mesosiderite
NWA 2932 Mesosiderite
NWA 869 L4-6 1kg Lot
NWA 3118 CV3 100g Lot
NWA 3151 Brachinite Thin Section
NWA 4528 H5 500g Lot
Unclassified 2kg Lot
Chergach Individual 92.1g (99% crusted)
Chergach Individual 64.1g (100% crusted)
Gao Individual 154g (from Haag Collection)
Glorieta Pallasite Individual 13.7g
Muonionalusta End Cut 76.9g (starts at just 99 cents)
Thank you for checking out what I have to offer, I
appreciate it!
Best regards,
Greg
====================
Greg Hupe
The Hupe Collection
NaturesVault (eBay)
[EMAIL PROTECTED]
www.LunarRock.com
IMCA 3163
====================
Click here for my current eBay auctions:
http://search.ebay.com/_W0QQsassZnaturesvault
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