Hi Elton,
I thought these looked like shock veins...still having trouble knowing
the difference between shock veins and slickenslides in this one?
http://i117.photobucket.com/albums/o43/LaburnumStudio/DSCN6902.jpg
Graham
Mr EMan wrote:
As to what Rob has raised--I did see several
chondrules in the photos. This looks much like the
friable L;s we have seen and contains slickensides
which would tend to make it a monomyct breccia.
However these large metal blebs are intriguing and
might make this an anomalous stone. I didn't see any
thing in the photos which appeared to be a true shock
vein, only the slicken sides. However for there to be
large blebs/clasts of iron and or olivine in the stone
it must have had a very shocked history with possibly
injected components of an iron or pallasite. If so,
this might explain the initial declaration that this
was a "chondritic pallasite".
Elton
--- Rob Matson <[EMAIL PROTECTED]> wrote:
"Based only on the images of the exteriors, I would
consider the specimens very unlikely to be
chondritic. But there~are~ some chondrite-like
features in the thin sections (though I wouldn't call
them unambiguously chondrules). The rims are
indistinct,
there are no shock veins visible, and the interference
colors don't seem quite right. I'll forward the images
to a few experts to get their opinions, but if this
is a chondrite, it would seem to be a metamorphised,
highly brecciated one."
--Rob
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