[meteorite-list] Question, Thinn sections

[Dave Myers]

Hi List, 

I list I have a question about thinn section photos, Like the great photos Top 
Phillips takes.

Those  who study meteorite or classify them, Can they tell just by looking at 
the photos, if
the thenn section is from a meteorite?? Can they tell if it is a Lunar or 
Martian meteorite from the thinn section photo??  Or do they need the  thinn 
section in hand to put through a type of spectrometor??

And is that even enough to tell, or does all the other testing have to be done 
to tell if it is a meteorite, is a Lunar or martian.

Thanks for any info.

dave