[meteorite-list] Fw: RFSPOD - February 9, 2010 Buzzard Coulee Blue Inclusion

From: Jeff Kuyken <info_at_meteoritecentral.com>
Date: Thu, 11 Feb 2010 19:16:37 +1100
Message-ID: <896ADC6328D54CDB9158ED49C9F40E6F_at_JeffPC>

Hi all,

Thanks for everyone's input. Firstly, Robert... one of the initial thoughts
I had was exactly the same in regards to the silver streaks on Ash Creek.
Maybe it is a related type of feature.

And Mark, you're not really mistaken. Mine appears on the surface of the
trailing side of the oriented individual. I say surface and not crust
because it does look like an interior metallic inclusion which is showing
through and coloured. Gary's awesome pic of his L3 with the interior
inclusion is very much like mine but on a smaller scale. It could be quite
possible that they are one and the same thing so maybe it is a result of
oxidation and not an ablation thing.

Has there been any documentation of metallic inclusions in Buzzard Coulee?
(i.e. Fe/Ni, FeS, etc) In other falls like Bensour, this was specifically
mentioned in the classification data. It would seem there are quite a few
people who have noticed them in Buzzard stones now too.

John's suggestion of Bornite is very interesting. I had never actually heard
of it before, but it does look VERY much like that. A brilliant iridescent
blue.

http://images.google.com/images?hl=en&safe=off&q=Bornite

When I googled Bornite and meteorites, the Meteorites Knowledge Base came up
as a hit. It lists it as "terrestrially weathered iron meteorite mineral".

http://www.site.uottawa.ca:4321/meteorites/index.html#bornite

So if this is an oxidation thing as a few have suggested now, I'm wondering
if it happened on the ground or during ablation in the disturbed wake at the
back of the stone and in the bottom of an indent?

Cheers,

Jeff


----- Original Message -----
From: "Mark Bowling" <minador at yahoo.com>
To: <meteorite-list at meteoritecentral.com>
Sent: Thursday, February 11, 2010 4:09 PM
Subject: Re: [meteorite-list] Fw: RFSPOD - February 9,2010 Buzzard Coulee
Blue Inclusion


I must have been mistaken, I thought somebody was talking about coloration
on crust and not interior features....

Mark B.
Vail, AZ



----- Original Message ----
From: Gary Fujihara <fujmon at mac.com>
To: Jeff Kuyken <info at meteorites.com.au>
Cc: Bernd Pauli <bernd.pauli at paulinet.de>;
meteorite-list at meteoritecentral.com
Sent: Wed, February 10, 2010 7:21:54 PM
Subject: Re: [meteorite-list] Fw: RFSPOD - February 9, 2010 Buzzard Coulee
Blue Inclusion

Aloha Jeff, Bernd, et al,

I am at a conference now and have limited access to email, but was informed
of this interesting anomalous inclusion in Jeff's Buzzard Coulee meteorite.
My friend and partner of the NWA (~L3, W0/1) has identified a similar
feature in one of my slices. Please have a look at my 20.11g full slice to
see this blue feature in the middle of a troilite inclusion:

http://bigkahuna-meteorites.com/Images/614g/_20.11b.jpg

Because this is from the interior of the meteorite, it should dispel any
theory of fusion reaction during ablative flight.

gary

On Feb 9, 2010, at 11:38 PM, Jeff Kuyken wrote:

> Hi Bernd & all,
>
> Maybe it's possible but it's about 150X bigger than my Isheyevo
> Hibonite-bearing CAI or chondrule. Probably too big? Actually, I wish you
> could see this feature in person Bernd. The best way I can describe it is
> to say that is looks just like the iridescent blue colour of a Peacocks
> feather.
>
> I was sent a pic off list by another collector who has a similar smaller
> feature on a very fresh NWA (~L3, W0/1). There is a brassy yellow one
> (troilite?) with a smaller blue one like mine next to it. Both look like
> melted metal on the surface. I know Mark had one other much larger Buzzard
> with a similar thing too. Has anyone else seen this or know what could
> cause it?
>
> Cheers,
>
> Jeff
>
> ----- Original Message ----- From: "Larry & Twink Monrad"
> <larrytwinkmonrad at comcast.net>
> To: <meteorite-list at meteoritecentral.com>
> Sent: Wednesday, February 10, 2010 11:18 AM
> Subject: [meteorite-list] Fw: RFSPOD - February 9,2010 Buzzard Coulee Blue
> Inclusion
>
>
>>
>> Subject: RFSPOD - February 9, 2010 Buzzard Coulee Blue Inclusion
>>
>>> Hello Jeff K., Michael J., Zelimir and List,
>>>
>>> I am wondering if this blue metallic inclusion in Jeff's Buzzard Coulee
>>> might be one of these hibonites that Zelimir showed us and that Jeff
>>> Grosman identified for us.
>>>
>>> This made me think of the MUCH-1 and "Blue Angel" inclusions in
>>> Murchison
>>> (both of them hibonite-bearing aggregates).
>>>
>>> http://www.rocksfromspace.org/February_9_2010.html
>>>
>>> Jeff, sincere congrats on such a fine Buzzard Coulee!
>>>
>>>
>>> Best wishes,
>>>
>>> Bernd
>>>
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Gary Fujihara
Big Kahuna Meteorites (IMCA#1693)
105 Puhili Place, Hilo, Hawai'i 96720
http://bigkahuna-meteorites.com/
http://shop.ebay.com/fujmon/m.html
(808) 640-9161





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Received on Thu 11 Feb 2010 03:16:37 AM PST