[meteorite-list] acid for pallasite
From: John Cabassi <john_at_meteoritecentral.com>
Date: Tue, 20 Sep 2016 20:23:23 -0700 Message-ID: <CAFBTX4zA=S3c4S4MpXAKVO3gEGU7wwZ5SC+tAZZokqsazUOknw_at_mail.gmail.com> Francesco and All, I understand where you're coming from. You have a pallasite slice/end cut that apparently was not cut properly. By that I mean, the final prep work so you have some moisture trapped inside the item which has led to rust developing between the iron/nickel and the olivine/peridot. The olivine/peridot has popped out but because it has accumulated rust residue, it won't go back where it came from. I suggest drying it out manually cleaning up the rust on the surface of the olivine/peridot as well as cleaning up the actual socket (I haven't used that one in a long time) that the olivine/peridot has fallen out of. I would not go to the point of acid. I would put on some glasses with magnification, spend a little time slowly cleaning up both surfaces and proceed with putting the jigsaw back together Cheers John On Tue, Sep 20, 2016 at 5:54 PM, Gmail via Meteorite-list <meteorite-list at meteoritecentral.com> wrote: > Francesco, > > I am obviously in the minority, but I thought you wanted to keep the > pallasite whole and just wanted to get rid of rust. Re-reading the email, it > does seem that you may want to dissolve the iron to extract the olivines. If > you want to extract the olivines, be aware that whatever acid you use will > need to be very concentrated and VERY dangerous. > > The risk/reward and return on investment seems hardly worth it. > > Best, > > Mendy Ouzillou > > On Sep 20, 2016, at 11:49 PM, CRAIG MOODY via Meteorite-list > <meteorite-list at meteoritecentral.com> wrote: > > The very thought of it makes me cringe. The chances of getting crystals > worthy of gem-stones, is slim. IMHO it would be sacrilege to destroy one of > the most beautiful meteorite types, for a few gems and a little cash. > > On 09/20/16, Gmail via Meteorite-list <meteorite-list at meteoritecentral.com> > wrote: > > Depending on the pallasite (is the cost of rehabilitation worth it) and the > extent of rust damage, you can pursue different options. If there is rust > between the olivines and iron, you will likely have to use an electrolytic > process. KD Meteorites are the experts in doing this. If it is just a little > bit of rust, then relish and then etch with Nital. > > Mendy Ouzillou > > On Sep 20, 2016, at 10:43 PM, Francesco Moser via Meteorite-list > <meteorite-list at meteoritecentral.com> wrote: > > Hello! > Wich kind of acid I can use for dissolve the iron/rust in a Pallasite, so I > can save the Olivine? > > > Thanks a lot! > > <x>x<x>x<x> > Francesco > > > > --- > Questa e-mail ? stata controllata per individuare virus con Avast antivirus. > https://www.avast.com/antivirus > > ______________________________________________ > > Visit our Facebook page https://www.facebook.com/meteoritecentral and the > Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > https://pairlist3.pair.net/mailman/listinfo/meteorite-list > ______________________________________________ > > Visit our Facebook page https://www.facebook.com/meteoritecentral and the > Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > https://pairlist3.pair.net/mailman/listinfo/meteorite-list > > ______________________________________________ > > Visit our Facebook page https://www.facebook.com/meteoritecentral and the > Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > https://pairlist3.pair.net/mailman/listinfo/meteorite-list > > ______________________________________________ > > Visit our Facebook page https://www.facebook.com/meteoritecentral and the > Archives at http://www.meteorite-list-archives.com > Meteorite-list mailing list > Meteorite-list at meteoritecentral.com > https://pairlist3.pair.net/mailman/listinfo/meteorite-list > Received on Tue 20 Sep 2016 11:23:23 PM PDT |
StumbleUpon del.icio.us Yahoo MyWeb |