Here are a few very interesting notes on volatile gold mentioned in Agricola's Treatsie on Gold.

1. "The gold calx can in any case soon be made volatile. Within two days I can volatilize it so much that it rises entirely into the alembic; even flies away. One may well be surprised that such a fixed Body can be so far destroyed that it can fly away without wings like Mercury, and yet can also be made fixed again with a little effort. I know how to make a spirit that destroys gold so much in a few hours that it flies with the spirit out of the glass into the air, if the glass is not tightly closed. Nobody knows where it goes, and it vanishes entirely, so that not one grain is left in the glass."
2. "Take 4 Lots of gold, dissolve it in Aqua Regis, as is usually done. When everything is dissolved, distill the water off to oiliness, pour fresh Aqua Regis over it, let it digest 24 hours, and again distill it to oiliness. You must repeat this work seven times. Now give it a rather strong fire, and the gold will rise and sublimate."