larense Posted April 19, 2007 Share Posted April 19, 2007 Hola to all forist. Recently we bought some unc. NWA meteorites, that came with a lot of caliche and iron oxide sticked on it. We cleaned the stones and took a picture of one before and after, so you all can see the difference. We used natural substances to do the cleaning. Below the pictures. Hasta la vista, larense Quote Link to comment Share on other sites More sharing options...
MT-AZ-HP Posted April 19, 2007 Share Posted April 19, 2007 Larense, What are the natural substances that you used to clean your meteorites. Harry Quote Link to comment Share on other sites More sharing options...
SoCalNovice Posted April 19, 2007 Share Posted April 19, 2007 That is some difference. They look beautiful when you are done with them; I am sure it is not as easy as it looks. Great job cleaning them up. You should post a how-to when you get some time. Thanks for the pictures. Scott Quote Link to comment Share on other sites More sharing options...
larense Posted May 11, 2007 Author Share Posted May 11, 2007 Hola to all forists. Going on with this thread, we recently bought some individuals of NWA 4528. We took a 40.9 gram piece, and again we used our home made cleaning process. The dealer gave us the only information that it is a H5 S2 W2-3 , nothing about is lithology, but it can easily seen in the pictures : it is a nice brecciated meteorite. So far, sanding some others stones, we have found three types of matrix colors : brown, gray and green. What a marvelous meteorite. Again, the pictures are before and after cleaning. A third pictures is a macro view of a sanded corner of the 40.9 gram. individual. Hasta la vista, larense Quote Link to comment Share on other sites More sharing options...
Basaltgooroo Posted May 11, 2007 Share Posted May 11, 2007 Hola vd. What did you use to clean these meteorites? Quote Link to comment Share on other sites More sharing options...
Hveragerthi Posted May 13, 2007 Share Posted May 13, 2007 Larense, What are the natural substances that you used to clean your meteorites. Harry I would think vinegar (acetic acid), or better yet citric acid. Citric acid should not only remove the caliche (calcium/magnesium carbonates), but should also help to remove some of the rust. Citric acid can be found in health food stores, Indian markets, craft stores in the candy making supply section, online, etc. It is very inexpensive, running around $2 to 4 per pound for the powder. Quote Link to comment Share on other sites More sharing options...
larense Posted May 17, 2007 Author Share Posted May 17, 2007 Hola forists. We took some new pictures of a sanded fragment of the NWA 4528 meteorite. In the first you can see the dark greenish matrix.In the second photo , you can see the metal veins and flecks. Hasta la vista larense Quote Link to comment Share on other sites More sharing options...
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