[meteorite-list] Northbranch H5

From: Gary K. Foote <gary_at_meteoritecentral.com>
Date: Sun, 14 Jan 2007 17:42:30 -0500
Message-ID: <45AA6B86.9312.7B7843_at_localhost>

Hi Matt,

My best view of the veins is by photography, which is not my best talent, but the 'shine'
of the veins match the 'shine' of the FeNi flecks, so I am making the assumption they are
of the same minerology. I know - when I assume I make an 'ass' of 'u' and 'me'. LOL I
will have to look into this further to be sure. Did you see the closeup picture at;

http://www.meteorite-dealers.com/images/northbranch4-2b.jpg

It does not show it, but just now I put on my strongest glasses and used a loupe to look
closer. The vein does cross the edge of the partslice and on the opposite side looks
more like a shock vein, not being filled full with the 'shiny stuff'.

Would FeNi flow into a shock vein during the higher temp stage of atmospheric entry?
Would hematite? I don't know how to explain this as I am relatively new to observing
details of slices and am only stating what I see.

Any enlightenment would be very welcome.

Gary

On 14 Jan 2007 at 15:26, Matt Morgan wrote:

> Hi Gary:
> Are you certain those are Fe-Ni veins? I had a good chunk of NB and the
> only veins were Fe-Oxides, in particular, hematite. NB is a pretty
> weathered H5; I remeber it was coated with a several-mm-thick rind of
> shale and a good amount of caliche.
> Blaine Reed had/has the main mass, and it was HUGE...
> Best,
> Matt
>
> Gary K. Foote wrote:
>
> >I've just received an excellent small part slice of Northbranch from the Hupe'
> >Collection. It displays some unbelievable veins of FeNi, one of which crosses the whole
> >specimen. I'm proud to have added this fine Northbranch to my collection;
> >
> >http://www.meteorite-dealers.com/northbranch.html
> >
> >Gary
> >http://www.meteorite-dealers.com
> >
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> >Meteorite-list at meteoritecentral.com
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> >
> >
> >
> >
>
>
Received on Sun 14 Jan 2007 05:42:30 PM PST