[meteorite-list] Rust Question about my stone meteorite. BKF is the best :)
From: Starsinthedirt at aol.com <Starsinthedirt_at_meteoritecentral.com>
Date: Mon, 13 Sep 2010 15:06:59 EDT Message-ID: <6d4ed.2ced32e0.39bfd053_at_aol.com> Hi List, I must agree with Shawn on this one. Does any one know of a case where a meteorite came out of an end collectors collection to be used in any way in research? I am not talking about Bob's 1st Lunar or Adams giant Lunar (These guys are not the end collectors). Any thing that does not degrade the sample and cause damage but makes it more pleasant to display in ones collection is a good thing. Tom Phillips In a message dated 9/13/2010 11:48:36 A.M. Mountain Daylight Time, photophlow at yahoo.com writes: Hi Martin and Listers Martin BKF is an acid and nothing more.... The acid doesn't bleach the surface and the active ingredient is oxalic acid, naturally occurs in plants and animals. The acid acts like an accelerant to the surface by stripping away the rust. The oxalic acid is nothing more then acid rain on steroids. But in this case the rust is stripped away from the meteorite, preserving the meteorite. As for making the meteorite worthless for being used for science, I think we can leave that up to the scientists, and to be honest, I think most meteorites in peoples collections are void because I bet scientist have strict rules on handing and storage of meteorites. But again I am not a scientist nor are most people on the list. But at any rate, if a scientist was going to use the L6 meteorite for research, I think that they would use an acid as well to strip the surface away to get to the good stuff in the middle :) As for changing a weathered meteorite from a W4 to W0 is probably impossible if the meteorite is a W4. The reason is because the weathering isn't superficial and the weathering is through out the meteorite. You would have to strip down the meteorite to nothing. Now do I say that everyone go out and do this no, but what I do say is if your confident and know what your doing then do it because rust for a meteorite can spell trouble. As for devaluing a meteorite for research, Martin again I have to say that most meteorites that people own could be deemed as worthless because of how they are handled, cut, sliced, buffed and stored. But again I don't think we all have a science lab in our bedrooms performing science experiments on our meteorites. If any thing I was able to stop the process of the meteorite from rusting and restore the surface to its original form. In that regard I am able to identify the meteorite from its physical features now, making the L6 more important from a scientific observation stand point and because I can see the meteorite and not rust from old age. Science 101, to stop an acid one can use a neutralizer aka water 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. BKF is the best :)Martin Altmann altmann at meteorite-martin.de Mon Sep 13 08:24:16 EDT 2010 Previous message: [meteorite-list] Rust Question about my stone meteorite. BKF is the best :) Next message: [meteorite-list] Rust Question about my stone meteorite. BKF isthe best :) Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] 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? Next message: [meteorite-list] Rocks from Space Picture of the Day - September 11, 2010 Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] ---------------------------------------------------------------------------- ---- More information about the Meteorite-list mailing list ______________________________________________ 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] Rust Question about my stone meteorite. BKF is the best :) Next message: [meteorite-list] Rust Question about my stone meteorite. BKF isthe best :) Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] More information about the Meteorite-list mailing list ______________________________________________ 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 Received on Mon 13 Sep 2010 03:06:59 PM PDT |
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