[meteorite-list] Opinion - Purple in a Meteorite

[Pete Pete]

Hello, all,

I've mentioned before that my interest in meteorites is new, and have just 
started collecting.

I've enjoyed buying quantities of (very affordable) Unclassified NWA's from 
some fellow list members, then cutting, polishing, and spending hours 
looking at them through my recently acquired stereoscope microscope. A whole 
new appreciation for chondrules when they're in 3-D!

Getting to the point; one stone I recently cut, and polished down to a 400 
grit wet sand cloth, then examined through the microscope, revealed that one 
metallic area (troilite?) has a cavity, and in the cavity is a very vibrant 
purple to navy blue substance.

http://pskills.onfinite.com/album/185698/628054/

http://pskills.onfinite.com/album/185698/628055/

The only information I've turned up on the internet thus far indicates that 
sodium chloride in meteorites is purple and blue, but it's been found just 
in the matrix.

Is it more likely that this substance is some type of oxide that formed in a 
manner similar to a geode?
I can't imagine salt forming or surviving inside a metallic area like this.

I have some more close-up pics in hi-res , if required.


Cheers,
Pete