[meteorite-list] Northbranch H5

[Gary K. Foote]

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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