Electronics in Extreme Enviroment Gold

Well, if you search for gold melting point, you will find part of the information you will need to know. But you've left out so much more information and are describing such an extreme hostile environment that I hope that this is either a homework assignment or a day dream. Anyone who must actually design anything that operates in this environment should not be getting such a fundamental question answered by a public forum.

Oh, what insulator will you use in this environment to separate this circuitry that uses some gold conductors?

I'm currently looking for one but I need to know how the metal will react first when exposed to a highly corrosive atmosphere, I really haven't found and data on insulators at that extreme.

Well when you expose gold to to corrosive atmosphere A it will pit and gall at a more rapid rate. But if you expose gold to corrosive atmosphere B and tune you MPEG tuner to 99.1 on the FM scale you will hear the molecules making the sound of Jimmy Hendrix playing a slightly flat version of Purple Haze on the harmonica.

What is the nature of the "highly corrosive atmoshpere"?