[meteorite-list] Making meteorite thin sections.

[Starsinthedirt at aol.com]

I must agree with Anne on this one.

Most  (almost all) of my micrographs on my Meteorite Times Meteorite 
Micrograph  Gallery were of thin sections loaned from Jeff Hodges.  He and Anne 
combine  efforts getting the best thin sections in the world made.  

Because  of the relatively high magnification I use, Jeff arranged for the 
polished  (uncovered) thin sections to all be polished to 1/4 micron on both 
sides.   

With out this level of quality, those eye popping images would not be  
possible.  

So this is an endorsement of Anne's thin sections and  not an ad.

That being said,  making thin sections is kind of a fun  challenge that 
every one should try at least once.  I have made several to  get a quick look 
at some thing but I must admit, I have never been able to get a  good 
micrograph from any of my handy work.

Tom Phillips  

In  a message dated 5/21/2010 5:50:42 P.M. Mountain Daylight Time, 
Impactika at aol.com  writes:
Yes Ed, 

As Ryan explained, thin-sections must be exactly 30  microns thick, not 29 
or 31, and from edge to edge, not just here and  there.
If you don't have the specialized and very expensive equipment you  will 
waste a lot of material and a great deal of time.
May I suggest  buying those thin-sections ready made, by the world expert 
in  
thin-sections?

And yes, I do have the largest selection.
Should  this be considered an Ad? or public information?     ;-)

Anne M. Black
_http://www.impactika.com/_  (http://www.impactika.com/) 
_IMPACTIKA at aol.com_ (mailto:IMPACTIKA at aol.com)  
Vice-President, I.M.C.A. Inc.
_http://www.imca.cc/_ (http://www.imca.cc/)  


In a message dated 5/21/2010 4:25:21 PM Mountain Daylight Time,  
ryan.weidert at gmail.com writes:
Hi Ed,
Thin sections are a bunch of  work and have to be withing pretty
strict parameters to let light through  correctly. Although I've never
made one myself before, I have friends whom  have had to make hundreds
for their masters/PhD projects and its pain, unless  you like grinding,
glueing, grinding. When done correctly, and with polarized  light, the
results (depending on the minerals) can be absolutely  astounding
natural work of art.

Here's a link I came across on how to  make one.
http://almandine.geol.wwu.edu/~dave/other/thinsections/

good  luck!

If you don't feel you're up to the task of making them, you can  send
rock/meteorite samples to be made for you, but of course its  money,
and the wait can be pretty long (months) to get them  back.

-ryan


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