[meteorite-list] What's this? -for the geology experts out there

From: Robert Verish <bolidechaser_at_meteoritecentral.com>
Date: Thu Apr 7 08:00:50 2005
Message-ID: <20050407120047.38157.qmail_at_web51701.mail.yahoo.com>

Hello Brother Graham and List,

http://marzmeteorite.tripod.com/mars-rocks/2mars1not.jpg

As you can tell from the above image, Brother Graham
and I belong to the same fraternity - The Fraternal
Order of Green Rock Picker-Uppers.

And here is an "in-situ" image showing where I found
my green rock:

http://marzmeteorite.tripod.com/mars-rocks/MRF04996.jpg

Actually, Graham, my story is much shorter than yours.
I found my little shergo-not just last week, and only
a few miles from my backyard. It was still sitting on
top of my monitor when I read your message and saw
your great looking image. It prompted me to share my
image with you. And, as in your image, I placed a
small slice of DaG 476 in front of my Mars-wannabe.
For added effect, I placed a larger slice of the DaG
670 stone to the right of my m-wrong.

As a rule, I don't "hazard a guess" about a rock-type
based solely on an image. Too many times I've had to
change my opinion about a rock-type after examining a
cut surface. So, if you show me the inside of your
rock, I'll show you the inside of my rock! ;-)

It's true. I haven't cut my little rock, yet. And to
be truthful, I haven't had it examined by an "expert",
so I can't say with 100% certainty that my rock is a
"shergo-not".

Wouldn't I be emabarassed if I was wrong, and my
"wrong" wasn't?

Bob V.

--------------- Original Message ----------------

 [meteorite-list] What's this? -for the geology
experts out there
Graham Christensen voltage at telus.net
Thu Apr 7 05:21:16 EDT 2005


Hello list

I've had this rock sitting on my kitchen table since
last year when I picked it up along the side of the
road while out for a walk. It is a fairly smooth
green rock with black bits in it and it looks somewhat
like my DAG 476
shergottite but it's a slightly lighter shade of
green. I have yet to grind an end off to see what the
inside looks like but there are a couple chips
out of it and it looks about the same on the inside
with the green part being fine grained and the black
bits are individual crystals. I doubt that it is
meteoritic (there is no trace of fusion crust) but I
was wondering if it might be similar to a shergottite
but of terrestrial origin.

Here is a pic of it:
http://www.geocities.com/aerolitehunter/dag476andunidentified.jpg
The small slice in the forground is my DAG 476 and the
big rock is of course the rock in question.

I have been collecting rocks on and off in this area
since I was a kid and I haven't seen anything like it
but that doesn't mean much. I live in Alberta, Canada,
where most of the rocks you find lying on the ground
were brought down from various locations by the
glaciers of the last ice age so it's kind of a potluck
dinner of geology up here.

I won't get my hopes up, but I certainly wouldn't mind
copying Bob Verish
and finding out I've been sitting on a mars meteorite
for a year!! :-)

Any comments are greatly appreciated
Graham

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Received on Thu 07 Apr 2005 08:00:47 AM PDT