JUst want to thank Tom for finding that site. I happened to learn how to
make thin sections in that lab at WWU using just that equipment.
Professor Hirsh is a great teacher. I'm sorry to say I wasn't able to take
any of his classes (his 1st year there at WWU was my last). But did help him
as I worked as a student worker for the geology department.
I'm sure he would be pleased to know that you enjoy his site on thin
sections (and don't miss his other pages which show pleochroism, just too
cool!)
Mark Ferguson
----- Original Message -----
From: "Tom Knudson" <[EMAIL PROTECTED]>
To: "met list" <[email protected]>
Sent: Wednesday, June 08, 2005 7:53 PM
Subject: [meteorite-list] thin section waste?
Hi List, I know nothing about thin sections or how they are made. So, I
went
to Google like a good boy and read about it. All the sites I visited said
the same thing, but gave no explanation. They said you end up with a
"chip"
it is the piece that is clued to the slide. They say to, take a "chip"
27
x 46 mm rectangular and 10mm thick epoxy it to the glass then cut off the
chip as close to the glass as possible leaving just a thin slice attached
to
the glass.
Okay, I said in the beginning, I know nothing about thin sections, but
that seems like a waste of time and material to me!!! You just wasted
3/4's
of the material! Why not take a piece 27 x 46mm and 4mm thick and epoxy it
to the glass and save your self the second cut and 6mm of your material?
You can call me what you will, but I can not see the reasoning behind the
waste! If you are making a lunar thin section, that is an expensive
proposition!
http://almandine.geol.wwu.edu/other/thinsections/
Thanks, Tom
peregrineflier <><
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