[meteorite-list] Rocks from Space Picture of the Day / NWA 4024

From: Matthias Bärmann <majbaermann_at_meteoritecentral.com>
Date: Mon, 25 Feb 2008 01:29:06 +0100
Message-ID: <000701c87745$6edcec00$0200a8c0_at_ibmtp23>

Hello Andrei,

I'm not sure but as far as I remember exactly this question was - and
perhaps still is - in discussion in regard to Winona and Canyon Diablo.

My best,

Matthias


----- Original Message -----
From: "Razvan Andrei" <asean-1 at xnet.ro>
To: <Meteorite-list at meteoritecentral.com>
Sent: Monday, February 25, 2008 1:11 AM
Subject: Re: [meteorite-list] Rocks from Space Picture of the Day / NWA 4024


>
> Hi list
>
> I wonder where is the line between a high metal winonaite
> and a silicated iron as in some irons, the silicate inclusions
> are winonaitic.
> Maybe analyses made on a piece where silicates are dominant
> can give a winonaite classification and on other pieces of the
> same fall with dominant iron can give an iron classification ?
> I'm asking because I have some pieces of NWA 4024 with
> silicates and some without, only irons, and recently I cut some
> small iron meteorites from Morocco and found them very similar
> with the irons from NWA 4024.
> Shall I call them irons ? or metal inclusions from a W chondrite ?
>
> Best Regards,
> Andrei
>
>
>
>
>
> ----- Original Message -----
> From: "Peter Marmet" <p.marmet at mysunrise.ch>
> To: "Meteoritenliste" <Meteorite-list at meteoritecentral.com>
> Sent: Sunday, February 24, 2008 3:08 PM
> Subject: Re: [meteorite-list] Rocks from Space Picture of the Day / NWA
> 4024
>
>
>>
>> Hello All,
>>
>>> http://www.rocksfromspace.org/February_24_2008.html
>> We have several pieces of very likely the same meteorite.
>> First we thought it might be paired with NWA 2680.
>> Further analyses at the Nat. Hist. Museum in Bern showed that this is
>> not the case:
>>
>> Ni 8.58 und 7.82 % (NWA 2680: 13.7%)
>> Co 0.47 und 0.46 % (NWA 2680: 0.54%)
>> Cu <10 ppm (NWA 2680: 548 ppm)
>>
>> Ni and Cu contents show that our material is very likely not paired with
>> NWA 2680.
>>
>> Then we saw high res. picts of NWA 4024 and noticed that our material
>> looks visually identical to NWA 4024.
>> We sold several pieces on ebay as "new iron" last year.
>> Unfortunately the museum in Bern could not classify our material, so we
>> sent 25 grams to Dr. Greshake
>> in Berlin. To be sure that it is the same material as NWA 4024, he
>> suggested to make an O-Isotope analysis which he can't do
>> himself but scientifists in England he is working with. But it seems
>> that our material is right at the bottom of the
>> priority list of these English scientists - so we have to be patient.
>> As soon we have the results from England, we will inform you and put
>> some of our material on ebay again.
>>
>> For those who already have bought from our material and are waiting for
>> the final results....thank you for being so patient!
>>
>> Peter
>>
>>
>> Peter Marmet
>> Bern, Switzerland
>> IMCA #2747
>> p.marmet at mysunrise.ch
>> http://www.marmet-meteorites.com/
>> ebay: http://search.ebay.com/_W0QQsassZpema9
>>
>>
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>
> _______________________________________________________________
> Vodafone scaneaza automat toate mesajele impotriva virusilor folosind
> Trend Micro VirusWall.
> Vodafone automatically scans all messages for viruses using Trend Micro
> VirusWall.
> _______________________________________________________________
> Nota: Este posibil ca produsul Trend Micro VirusWall sa nu detecteze toti
> virusii noi sau toate variantele lor. Va rugam sa luati in considerare ca
> exista un risc de fiecare data cind deschideti fisiere atasate si ca
> Vodafone Romania nu este responsabila pentru orice prejudiciu cauzat de
> decizia dvs.
> Disclaimer: It is possible that the Trend Micro VirusWall product may not
> be able to detect all new viruses and variants. Please be aware that there
> is a risk involved whenever opening e-mail attachments to your computer
> and that Vodafone Romania is not responsible for any damages caused by
> your decision to do so.
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Received on Sun 24 Feb 2008 07:29:06 PM PST