[meteorite-list] Meteorite survival

[ensoramanda]

Hi Jeff/All,

Thanks to those who replied to my question about survival of Chondrites 
in wet climates. The Pultusk, found in 2006 after more than a century in 
a wet climate, is an excellent example Jeff.
Great pieces Marcin.

I suppose that means that larger pieces of Barwell may still be around 
in reasonable condition....although Barwell is probably more fragile and 
an L chondrite rather than an H....or perhaps that means there is less 
in the matrix to rust and weather the meteorite away. We know more about 
what to look out for now.

Graham Ensor



Jeff Kuyken wrote:

> Hi Graham, Göran & all,
>
> I believe Pultusk would be another good example. Here's an example that
> Marcin has:
>
> http://www.polandmet.com/_pultusk.htm
>
> Cheers,
>
> Jeff
>
>
>
> ----- Original Message ----- From: "Göran Axelsson" <axelsson at acc.umu.se>
> To: "Meteorite List" <meteorite-list at meteoritecentral.com>
> Sent: Saturday, May 03, 2008 4:37 PM
> Subject: Re: [meteorite-list] Meteorite survival
>
>
> I changed the subject as this topic took a different path from the
> original posting.
>
> There are strong evidence that the Ultuna meteorite found in 1944 is
> paired with the 1869 Hessle fall. Classified as H chondrites. I don't
> know the weathering grade of Ultuna.
> I had the happy coincidence to handle a large (about 600g) individual
> this winter.
>
> Ref : NYSTRÖM, J.O. AND WICKMAN, F.E.,1994: The Ultuna and Hessle
> meteorites, Sweden: paired falls? GFF 116, pp. 231-233.
>
> /Göran
>
> ensoramanda wrote:
>
>>
>> Great pieces Mike....looks like this last month has been a good one.
>>
>> Hoping to get to Ensisheim or Saint Marie again this year...but not sure
>> yet.
>>
>> And now a question Mike...or anyone else out there.  Are there any 
>> records
>> of  chondrite falls that were found many years after the actual fall (40
>> or more years) in climates which are wet or similar the Britain.
>>
>> I am still trying to asses what sort of state a meteorite such as 
>> Barwell
>> may be in after weathering the elements for that long as we are still on
>> the track/hunt for one large piece observed to fall by a farmer well
>> outside of the normal strewnfield but never recovered. Are there 
>> instances
>> of such finds, and if not, is it because they have weathered a way
>> completely?
>>
>> Any thoughts anyone?
>>
>> Graham Ensor
>>
>
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