Re: [meteorite-list] Nitol Etching Formula

2017-10-11 Thread Mendy Ouzillou via Meteorite-list
The short answer is that it depends. Some people use the weaker 10% Nitol and others use closer to 30% Nitol (I am pretty sure based on fuming 63-67% Nitric acid), and some use everything in between based on the actual meteorite being etched. I use the 63-67% Nitric acid and mix it with 99.9%

[meteorite-list] Location of Mauerkirchen Meteorite Samples

2017-10-11 Thread Herbert Raab via Meteorite-list
Dear curators and collectors, I am working on a short paper on the occasion of the upcoming 250th anniversary of the fall of the Mauerkirchen meteorite (1768-2018). For that, I try to track down the current location of as many samples of the Mauerkirchen meteorite as I can. I would therefore

[meteorite-list] Nitol Etching Formula

2017-10-11 Thread bobadebt--- via Meteorite-list
I looked but can seem to find this specific info so I hope someone on here can help. I know the basic formula for Nitol etching solution is 90% alcohol and 10% nitric acid. BUT what are the strengths is this formula based on? For instance, you can readily buy 70% and 90% alcohol at any store