[meteorite-list] Cleaning a heavy iron meteorite

From: Guenther <abe.guenther_at_meteoritecentral.com>
Date: Fri, 11 Nov 2011 18:47:14 -0500
Message-ID: <00ca01cca0cc$3d50a690$b7f1f3b0$_at_guenther@mnsi.net>

Hi Count,

I will do this tomorrow and post the results.

I couldn't find your picture of the day you mentioned but do you mean this one? http://www.encyclopedia-of-meteorites.com/test/52752_5909.jpg

Thanks for the advice.

Abe Guenther

-----Original Message-----
From: Count Deiro [mailto:countdeiro at earthlink.net]
Sent: Friday, November 11, 2011 4:21 PM
To: Guenther; meteorite-list at meteoritecentral.com
Subject: Re: [meteorite-list] Cleaning a heavy iron meteorite

Hi Abe,

You were correct in finally using a soft "stainless" steel brush. The greyish brown color is probably as close as your going to get after laying a little "gold" on the rock. If your just wanting to make it look nice and not going to study it, I would immerse this stone meteorite in 90% alcohol for ten minutes and then bake it dry at 325 degrees for about ten minutes. Polish it off with a micro-fiber cloth.

A greyish brown, with patches of darker fusion crust, in a weathered chondrite is pretty close to normal. Especially after it has terrestialized to the point of the partial, or complete, dissapearance of visible fusion crust. Although meteorites can sure vary according to their origin, cosmic and terrestial life.

If you keep the recent "Meteorite of the Day" pics of a couple of days ago, look at my Stump Spring LL6 weathered chondrite which was treated as described above. Washed with distilled water. Dryed. Stainless dremel to remove terrestial caliche, etc. and then alcohol soak and drying. Then polished with micro-fiber cloth.

Good luck,

Guido

 


-----Original Message-----
>From: Guenther <abe.guenther at mnsi.net>
>Sent: Nov 11, 2011 8:11 AM
>To: meteorite-list at meteoritecentral.com
>Subject: [meteorite-list] Cleaning a heavy iron meteorite
>
>Hi all,
>
>A year ago I found a large heavy iron meteorite. When I found it the color
>was a dark brown. In my attempt to bring out the true color, I decided to
>use a dremel tool with a fine wire brush bit to clean it. The dremel brush I
>used was extremely soft and gold in color and it turned slightly gold in
>color. So, I bought a soft stainless steel wire brush and now it turns grey
>when I brush it. What is the best way for me to clean it to get the true
>color?
>
>Here are the original images after I used the gold color brush:
>
>http://aguenthe.mnsi.net/NM1.jpg http://aguenthe.mnsi.net/NM2.jpg
>http://aguenthe.mnsi.net/NM3.jpg http://aguenthe.mnsi.net/NM4.jpg
>
>Thanks,
>
>Abe Guenther
>
>
>
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Received on Fri 11 Nov 2011 06:47:14 PM PST