[meteorite-list] RE: Nice Dronino?

2004-11-26 Thread tracy latimer
I must have the weirdest environment ever to try to preserve meteorites in... My 10 g piece of Chinga, which one of the other List members described as "practically natural stainless steel", has a nice little swathe of rust across its face. I will need to clean and treat better than half of my

Re: [meteorite-list] RE: Nice Dronino?

2004-11-26 Thread Meteoryt.net
> Or storing it in oil after the alcohol/NaOH bath? > As I say before, I "stored" my etched droninos oiled with Balistol in open air and they looks stable for some months. And I not used on them NaOH solution yet. I etched them around may/june and maybe 2 weeks ago I sell my last one. -[ MA

Re: [meteorite-list] RE: Nice Dronino?

2004-11-25 Thread Jonathan Gore
Or storing it in oil after the alcohol/NaOH bath? JKGwilliam wrote: Have any of you who are fighting with rust/decay problems with Dronino tried storing with desiccant in an airtight container after treating with the alcohol/NaOH bath? I can remember Steve Shoner telling the list about using the

Re: [meteorite-list] RE: Nice Dronino?

2004-11-25 Thread Jonathan Gore
What about storing in a vacuum with a container of concentrated sulfuric acid after the alcohol/NaOH bath? JKGwilliam wrote: Have any of you who are fighting with rust/decay problems with Dronino tried storing with desiccant in an airtight container after treating with the alcohol/NaOH bath? I

Re: [meteorite-list] RE: Nice Dronino?

2004-11-25 Thread JKGwilliam
Have any of you who are fighting with rust/decay problems with Dronino tried storing with desiccant in an airtight container after treating with the alcohol/NaOH bath? I can remember Steve Shoner telling the list about using the alcohol/NaOH solution bath. As best as I can remember, he was the

Re: [meteorite-list] RE: Nice Dronino?

2004-11-25 Thread Jonathan Gore
I thought about that too ... what about storing it in alcohol? Pekka Savolainen wrote: You may have right, but think Dronino have enough oxygen in it to rust even in a full vacuum...;- It looks to me, old Campos, Nantans and so on rust very different way than Dronino, which destroys itself from ins

Re: [meteorite-list] RE: Nice Dronino?

2004-11-25 Thread Pekka Savolainen
You may have right, but think Dronino have enough oxygen in it to rust even in a full vacuum...;- It looks to me, old Campos, Nantans and so on rust very different way than Dronino, which destroys itself from inside out, that´s way I used the word "boiling". Perhaps this fellow is an ancient space-

Re: [meteorite-list] RE: Nice Dronino?

2004-11-25 Thread Jonathan Gore
I thought it wasn't a good idea to store meteorites in plastic bags. I would think storing it in a bell jar with the air evacuated would stabilize it. Just a thought Jonathan Pekka Savolainen wrote: Nope, as far as I know. This mirror-polished fellow was stored in the air-tight plastig-bag,

Re: [meteorite-list] RE: Nice Dronino?

2004-11-25 Thread Pekka Savolainen
Nope, as far as I know. This mirror-polished fellow was stored in the air-tight plastig-bag, and some 10 months it was a real beauty. Then it started to rust very fast, or in fact not only to rust, perhaps "boiling" is a good word for the process...;- The beauty today; http://www.dlc.fi/~nuuska/dro

Re: [meteorite-list] RE: Nice Dronino?

2004-11-25 Thread Pekka Savolainen
Well, have tried everything except black magic and woodoo...;- Dronino is a quite old one, accordindg Verdansky from before 12:th century. Main part of the pieces was found from the very wet area, so I suppose, the chlorides are not the only problem..., the meteorite is just too old and have spent

Re: [meteorite-list] RE: Nice Dronino?

2004-11-25 Thread Meteoryt.net
> Has anyone ever tried some of the tried and true iron stabilization > techniques on Dronino, such as a long bath in an alcohol and NaOH rich > solution to remove chlorides? On a related subject, I guess that I may not > really understand the chemistry behind why some meteorites are stable, and >

[meteorite-list] RE: Nice Dronino?

2004-11-25 Thread Stephen McMann
Dear Pekka and List, Has anyone ever tried some of the tried and true iron stabilization techniques on Dronino, such as a long bath in an alcohol and NaOH rich solution to remove chlorides? On a related subject, I guess that I may not really understand the chemistry behind why some meteorites are