[meteorite-list] NWA 2892 (H/L3) 'Chondrule Conglomerate'

From: j.divelbiss_at_att.net <j.divelbiss_at_meteoritecentral.com>
Date: Wed May 4 21:58:18 2005
Message-ID: <050520050158.27893.42797DDC00090EE100006CF521603759649C9C070D040A90070BD206_at_att.net>

NWA 2892 is very nice.

I was checking the paramagnetic "pull" force of different materials, and was quite surprised that this meteorite, and its cousin NWA 1955 have very very low magnetic pull. Similar to the low end of the LL's and just a hair above the R's...which is practically zero in strength. Now both of these meteorites are H/L 3-4 with a weathering grade of W3, which suggests that most of the metal (60 to 90 %) had oxidized.

I do see a small bit of metal in NWA 2892, but none in 1955.

Is there something unique about this classification and it's metal/iron content that gives it a low "pull" srenght? Or does a weathering grade of W3 knock out a good portion of the "pull" strength due to the oxidation process?

Any thoughts ?

John



-------------- Original message from "Jeff Kuyken" <info_at_meteorites.com.au>: --------------


> G'day folks,
>
> I've just received a slice of Stefan's NWA 2892 (H/L3) which has been
> referred to as one of the 'Chondrule Conglomerates'. Some of you may
> remember Rob Elliott's beautiful stone some time ago. Under magnification
> this meteorite comes alive with a sea of wall-to-wall chondrules..... and
> not a matrix in sight! I have put a quick page together at the URL below:
>
> http://www.meteorites.com.au/features/nwa2892.html
>
> Cheers,
>
> Jeff Kuyken
> I.M.C.A. #3085
> www.meteorites.com.au
>
> ______________________________________________
> Meteorite-list mailing list
> Meteorite-list_at_meteoritecentral.com
> http://six.pairlist.net/mailman/listinfo/meteorite-list
Received on Wed 04 May 2005 09:58:53 PM PDT