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Frazers hush mine,England fluorite galena

Posted by Rock man456  
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Rock man456 August 02, 2012 05:53PM
Hello, i have a fluorite & galena specimen about 6" wide & it has some smashed up fluorite crystals in between the big galena crystals & was wondering how to remove the fluorite without affecting the galena.
Thanks & any help greatly appreciated
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Jolyon & Katya Ralph August 02, 2012 06:08PM
Only really practical way is mechanically, breaking small pieces off and removing them.
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Jesse Fisher August 02, 2012 09:48PM
Removing damaged fluorite crystals from a specimen is relatively easy with an air scribe of the Chicago Pneumatic variety. Use a needle point and just touching it to the broken crystal will cause it to shatter without effecting those around it.
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Andrew Zioto August 07, 2012 01:36PM
I didn't know what a 'air scribe' was so i Google'd it and it says its used for engraving and writing. How does this work for specifically removing crystals without damaging others around it? Is a 'needle point' a specific bit used on the air scribe? I'm very curious because i find a lot of dolostone with dolomite, calcite, fluorite, etc. that would make excellent specimens if it wasn't for one or two broken crystals. if i could somehow cleanly remove these defects that would be just awesome!
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Rock Currier August 07, 2012 09:56PM
There are many small hand held tools that are sometimes called air scribes. Actually they are small hand held "jack hammers". They can be very small tools with vibrating steel or carbide heads that are commonly used for "writing on metal" or they can be bigger and stronger ones that can chip away chunks of rock. The size of the one that will prove most useful in chipping away broken crystals may depend on what mineral species you are talking about and how large it is. It is helpful to have several sizes from which you can choose the most effective tool.

Rock Currier
Crystals not pistols.
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Mineralogical Research Company August 07, 2012 11:47PM
For a large selection of high quality micro air tools see http://www.paleotools.com/ . And, no I don't sell them. I have seen them operate and have one on my wish list just under Micro Blaster.

Gene
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