I was able to resolve the issue where the mining station would not appear on an Acknexium planet. So now mining stations seem to be fully operational!
Acknexium mining operations can only start after you have secured a sample from the planet in question. A team will be sent down to the surface, where they construct the station, and they will remain there to manage Acknexium extraction. The advanced mining techniques do not otherwise alter the planet in any way.
Here's me hanging out at a mining station with some of the guys...
I have also added a mining generator sound effect, to add some ambiance to this important part of the Star Explorers experience. But you will have to venture forth and find some Acknexium if you want to hear that.