[meteorite-list] thin section waste?

[Michael Farmer]

Tom, will, then why waste the time and glue to paste it to the slide? Just 
throw a chunk in the machine. Of course, then you will destroy a 
multi-million $$$ machine but hay, you saved some material from being ground 
away.
A thin section is made so thin that light can pass through the meteorite! It 
has to be ground down that thin.
Have you ever seen a thin section?
Mike
----- Original Message ----- 
From: "Tom Knudson" <peregrineflier at npgcable.com>
To: "met list" <meteorite-list at meteoritecentral.com>
Sent: Wednesday, June 08, 2005 4:53 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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