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Cleaning
  
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Maxilos




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PostPosted: Nov 02, 2010 10:43    Post subject: Cleaning  

Hi,

What is the best way to clean minerals. I mean like pyrite, it can rust because of the iron in it, but some other minerals react on water or turpentine. If I need to find out witch mineral react on what substance I'll be busy for a long time.

What is the best I can do to clean my minerals?
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Jordi Fabre
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PostPosted: Nov 02, 2010 11:13    Post subject: Re: Cleaning  

Maxilos wrote:
If I need to find out witch mineral react on what substance I'll be busy for a long time...

Yes, probably you should be busy for long time to learn the way to clean minerals as well as to learn about mineralogy. It is a long way, but very grateful...

To help you on your start you can use this English book -> "Cleaning and preserving minerals" author: Richard Maxwell Pearl -> https://www.worldcatlibraries.org/oclc/1321568?tab=details
and if you can read Spanish language you have this wonderful guide: "Apuntes sobre la limpieza de Minerales" author Pedro Prado Herrero -> https://usuarios.multimania.es/piromorfita/mineralworld-W3/TALLERES/limpieza-mine-last-Publish.pdf

You also have our section "Preparing and Cleaning Minerals" -> https://www.mineral-forum.com/message-board/viewforum.php?f=16 where you have different threads concerning the cleaning of minerals. If you read them I believe you will have a more diversified vision about this topic.

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James Catmur
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PostPosted: Nov 02, 2010 11:49    Post subject: Re: Cleaning  

You need to be very careful as each mineral is sensitive to different chemicals. And do remember that water and air are both chemicals so can affect certain minerals. If you wash natural salt crystals they disolve, etc! So do some research and read up before you clean a particular mineral. You will learn over time, make mistakes, destroy specimens (as I have done) but in the end you will get some good ideas and can learn from the section on 'cleaning and preparing specimens'.

And do remember that temperture also matters - hot water can cause a specimen to fracture or even change color.

James
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marvsT/Nminerals




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PostPosted: Nov 02, 2010 15:53    Post subject: Re: Cleaning  

Hi, James brings up a very important point; try to clean the minerals, those that are safe to clean in liquids, in room temperature liquid. As he points out, warm temperatures can cause crystals to break, dissolve or craze. While some water soluble salts can be cleaned in hydrocarbons the remaining odors of some liquids might be offensive. Marv
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rweaver




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PostPosted: Nov 02, 2010 22:39    Post subject: Re: Cleaning  

and there is always the old standard "Gemstone & Mineral Data Book" by John Sinkankas if it is still available for sale.

ISBN:0--87691-067-3 @1972

The one i have in my collection is personally sign to me by John back in August 1972 at his home in San Diego.
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Maxilos




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PostPosted: Nov 03, 2010 04:02    Post subject: Re: Cleaning  

Thanks, I think Í'm going to order a book about cleaning and try to find what minerals react on what substance.
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