[meteorite-list] Electric metallic blue inclusion in Ensisheim

[Göran Axelsson]

Nice picture!

The blue color is probably caused by interference in a thin oxide 
coating on the sulphide inclusion. Just like a thin layer of oil on 
water can create a rainbow pattern of different colours.
This effect is also seen in a number of minerals like pyrite, 
chalcopyrite and bornite. One of the most prominent displays is in 
"peacock ore" (which is chalcopyrite but it is easily oxidated on the 
surface).

/Göran

Shawn Alan wrote:
> Hello List
>  
> Tonight I took this photograph of my Ensisheim that I got a couple weeks ago. I noticed when I first got the meteorite this intense metallic gold vein going at a diagonal angle and within the vein there is this electric metallic blue inclusion while viewing it through my 60x loupe. I remember last month there was a thread about Buzzard Coulee Blue Inclusion and I think some people had suggested that this inclusion might be Bornite. I am not sure if this discussion was completed but I would like to add my hypotheses on what it might be from my meteorite. I think it could Troilite because the vein reminds me of pyrrhotite which is FeS,Troilite, which is common in meteorites in varying degrees. Has anyone ever seen a electric metallic blue inclusion lke this in Ensishem before? And what are your thoughts it might be?
>  
> Shawn Alan
>  
>  http://farm5.static.flickr.com/4022/4437467502_86fab042c2_b.jpg 
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