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daviddillman
Joined: 04 Dec 2010
Posts: 51
Location: Texas
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Posted: Apr 21, 2015 19:36 Post subject: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite |
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I have a specimen from Blanchard New Mexico that contains fluorite, a little Baryte and some circular areas of what appear to be malachite. There are also some iron stains. How can I get the iron stains off without destroying the malachite? I was thinking super iron out. Thanks.
Mineral: | Fluorite, Barite, Malachite |
Locality: | Blanchard Mine (Portales-Blanchard Mine), Bingham, Hansonburg District, Socorro County, New Mexico, USA | |
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Dimensions: | 11.25 cm x 8.8 cm |
Description: |
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Pete Richards
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Joined: 29 Dec 2008
Posts: 828
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Posted: Apr 21, 2015 20:08 Post subject: Re: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite |
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That's a very nice specimen. Don't mess with it.
Iron oxides are natural minerals and appropriate in this context.
The circular areas are probably not malachite, unless the color is really off. The color as I see it suggests cyanotrichite, but the habit does not. Another possibility is brochantite, but it should not be that blue.
Aurichalcite is another possibility, but it is rare and confined to specific mines in the Blanchard complex.
Regardless of the identity of the circular area minerals, leave this specimen as it is!
_________________ Collecting and studying crystals with interesting habits, twinning, and epitaxy |
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alfredo
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Posted: Apr 22, 2015 00:54 Post subject: Re: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite |
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What Pete said!
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Jordi Fabre
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Posted: Apr 22, 2015 02:50 Post subject: Re: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite |
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daviddillman wrote: | ...I was thinking super iron out... |
Bad idea. The secondary copper minerals are sensitive to the super iron out.
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daviddillman
Joined: 04 Dec 2010
Posts: 51
Location: Texas
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Posted: Apr 22, 2015 09:33 Post subject: Re: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite |
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Jordi, Alfredo, Pete,
Thanks for you advice. I will leave it alone.
David
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Les Presmyk
Joined: 06 Dec 2007
Posts: 372
Location: Gilbert, AZ
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Posted: Apr 23, 2015 10:49 Post subject: Re: Cleaning Iron Stains off Blanchard New Mexico Specimen with Malachite |
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The iron coloring should stay. I would consider trimming a portion of the top half of the specimen to remove what appears to be damaged areas.
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