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

[Razvan Andrei]

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
>
>
> ______________________________________________
> http://www.meteoritecentral.com
> Meteorite-list mailing list
> Meteorite-list at meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
>
>
> _______________________________________________________________
> 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. 



_______________________________________________________________
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.