[meteorite-list] Muonionalusta - Displacement Lines

[Jeff Kuyken]

G'day List,

I recently acquired a 306g Muonionalusta Half Slice which caught my eye for
its unusual displacement/shock lines running through the etch. I remember
recently that someone posted a pic of Gibeon(?) with a similar feature and
there were theories that lines represented the boundary between the cooling
of different areas.

I believe the lines in the piece below are more likely from some sort of
shock event as the pattern matches up like a jigsaw but I'd very much like
to hear more opinions from others.

http://www.meteorites.com.au/features/muonionalusta.html

Thanks,

Jeff Kuyken
I.M.C.A. #3085
www.meteorites.com.au