It’s a game I used to play on PC in the mid to late '90’s.
Basically you establish mining outposts on planets and go around collecting, buying and selling the minerals.
Platform(s): PC
Genre: Space/Trading Sim
Estimated year of release: 1995-1999
Graphics/art style: Mostly from the inside of a spaceship cockpit (I think)
Notable characters: N/A
Notable gameplay mechanics:
Other details:
Your description sounds like the Elite series.
https://en.wikipedia.org/wiki/Frontier:_Elite_II
https://en.wikipedia.org/wiki/Frontier:_First_Encounters