What is the best way to prepare slides of sand?

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Offline bigblock

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What is the best way to prepare slides of sand?
« on: 18/08/2012 03:06:55 »
What is the best way to prepare a slide when it comes to sand? I'm trying to take the shine off of black sand when I view it at 100x. That shine can cause black sand to appear metallic.  I have tried is dry and wet but the shine is still there. Wet helps some but not completely. Any ideas would be helpful.

edit: Is there some sort of dye I can add to make sand show without a shine unless it is metallic?
« Last Edit: 18/09/2012 10:40:15 by chris »

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Offline Bass

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Re: Best way to prepare slides
« Reply #1 on: 18/08/2012 23:17:23 »
you can try using light at different angles.  If that doesn't work, you can use a clear glue like epoxy to stick the sand grains to the slide, then grind down the sand/epoxy mixture.
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Offline RD

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Re: Best way to prepare slides
« Reply #2 on: 19/08/2012 03:34:07 »
... I'm trying to take the shine off of black sand when I view it at 100x.

Polarising filters are used to remove glossy reflections (specular highlights) in optical instruments. (see "cross-polarisation").

Quote
a "simple polarizing" microscope is easily made by adding inexpensive polarizing filters to a standard biological microscope, often with one in a filter holder beneath the condenser, and a second inserted beneath the head or eyepiece. These might be sufficient for many non-quantitative purposes.
https://en.wikipedia.org/wiki/Petrographic_microscope

https://www.google.co.uk/search?q=polarising+film
« Last Edit: 19/08/2012 04:53:47 by RD »

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Offline JimBob

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Re: Best way to prepare slides
« Reply #3 on: 23/08/2012 04:23:37 »
Have the German tech in the basemen make the slides. That was the reason the department hired him. right?
The mind is like a parachute. It works best when open.  -- A. Einstein

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Offline bigblock

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Re: Best way to prepare slides
« Reply #4 on: 23/08/2012 06:55:27 »
I don't have access to German tech's. If I did I wouldn't be asking for knowledge here. You know of any German tech's that could help me?