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

[Matthias Bärmann]

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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