[meteorite-list] Rust Question about my stone meteorite. BKF isthe best :)
From: Mark Ford <mark.ford_at_meteoritecentral.com>
Date: Mon, 13 Sep 2010 13:54:31 +0100 Message-ID: <29A9DB45B84970458190D7D39BD42C49B0F8B4_at_gamma.ssl.atw> Hi Martin, I agree it doesn't sound like a good idea. Personally I wouldn't do this, at a pinch I would treat an Iron meteorite if it was the last hope of keeping it alive! However this type of thing has actually been done for many years, other methods are also used such as galvanic cleaning, and my favourite pet hate- people putting on 'Kurust' rust stopper that turns the fusion crust jet black, they are all age old treatments. The same things happen in the mineral world, many crystals are oiled, polished and treated to enhance colour. I suppose at least Bar Keepers Friend (or renamed: meteorite sellers enemy) only effects a thin outer layer of the rock, the washing and drying at 200 degrees for several hours is probably much more destructive. Mark -----Original Message----- From: meteorite-list-bounces at meteoritecentral.com [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Martin Altmann Sent: 13 September 2010 13:24 To: meteorite-list at meteoritecentral.com Subject: Re: [meteorite-list] Rust Question about my stone meteorite. BKF isthe best :) Humhem...please! No offense. It's absolutely you're private affair, what you're doing with your meteorites. Though in general I think it's a big No-No to manipulate stony meteorites that way, to artificially bleach them. (Just was looking, "Bar Keeper Friend"s main reactive agent is oxalic acid). Stone meteorites are no irons. In my opinion such a treatment will make them to a certain degree worthless, as they can't be used anymore for scientific measurements. What I would urgently expect, is to avoid, that such bleached chondrites would be brought in circulation. The meteorite sector, other than the minerals and fossils sector, all in all was so far relatively spared from manipulated or fudged specimens. It would be in my very personal opinion everything else than good, that W2, W3, W4 material now would be pimped to be suggestive of being a W0 or a W1. I hope we all can agree about? Worried Martin -----Urspr?ngliche Nachricht----- Von: meteorite-list-bounces at meteoritecentral.com [mailto:meteorite-list-bounces at meteoritecentral.com] Im Auftrag von Shawn Alan Gesendet: Montag, 13. September 2010 07:59 An: meteorite-list at meteoritecentral.com Cc: Jimski47 at aol.com Betreff: [meteorite-list] Rust Question about my stone meteorite. BKF is the best :) Jim k and the List, ? ? I took your advice and used the Bar Keeper Friend on my L6 meteorite fragment to remove the rust on the surface of the meteorite due to age and I would have to say, wow, this stuff really works. The meteorite looks so much better. I can see the true color of the meteorite, I can see the texture and the gray matrix. I have a link down below of before and after images of the meteorite :) Take a look and you will be amazed of the results. ? http://www.flickr.com/photos/48262799 at N03/4985819064/sizes/l/in/photostream/ ? Shawn Alan IMCA 1633 eBaystore http://shop.ebay.com/photophlow/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p 4340 [meteorite-list] Rust Question about my stone meteorite. Jimski47 at aol.com Jimski47 at aol.com Sat Sep 11 07:38:57 EDT 2010 Previous message: [meteorite-list] Tunkuska Tektites? Next message: [meteorite-list] Rocks from Space Picture of the Day - September 11, 2010 Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ---------------------------------------------------------------------------- ---- Hi Shawn, I doubt that soaking a meteorite in alcohol will remove rust. I've used fine grit sandpaper to remove rust from slices. Lay the sandpaper on a hard flat surface and gently rub the meteorite onto the sandpaper. For removing rust from iron etched slices, I use a product called "Bar Keepers Friend", this can be found in most grocery stores cleaning supplies isle. It comes in a powder form, so you have to make a thick liquid out of it. Wet the meteorite with warm water then apply the liquid BKF. Rub it onto the meteorite with your finger gently. Rubbing to hard can damage the etch. After removing the rust, rinse the piece, soak it in alcohol and bake it dry in an oven about 200 degrees for 2 hrs. You can try the BKF process on a chondrite fragment and use a toothbrush to scrub it. It should work but you might want to experiment with a cheap uncl. NWA first. Jim K In a message dated 9/10/2010 11:14:49 P.M. Central Daylight Time, photophlow at yahoo.com writes: Hello Listers, I have a question about rust and how to clean it off your L6 meteorite. Now can you just soak the meteorite in a 99% alcohol bath for a couple days and the rust on the surface will some what come off the surface or are there other steps? The the size of the L6 fragment is 3.45g, so I dont have much room to work with. I used a sand/finger nail file and sanded the surface, but not sure if that made a difference and it seems that the L6 meteorite surface is stronger than the sand paper on the finger nail file. If any Listers have some suggestions let me know please :) Shawn Alan IMCA 1633 eBaystore http://shop.ebay.com/photophlow/m.html?_nkw=&_armrs=1&_from=&_ipg=&_trksid=p 4340 ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list at meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list ---------------------------------------------------------------------------- ---- Previous message: [meteorite-list] Tunkuska Tektites? 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