Aqua Regia Fractal thingy 404 Aqua regia is a technique of using a special acid mixture to leach metals out of rocks so that their composition can be analysed. I've never done it myself, but we learn about it...

Aqua Regia Fractal thingy 404 Aqua regia is a technique of using a special acid mixture to leach metals out of rocks so that their composition can be analysed. I've never done it myself, but we learn about it...