It would be a item like the heat amplifier sold at the supply depot in 2 days, 7 days, and 30 days variants which costs 800ce, 1600ce, and 5000ce respectively and doubles the amount of minerals you get from a mineral deposit (ie if you get the biggest mineral which is normally worth 6 it's now worth 12). Minerals gained this way is not shared with the rest of the party, only given to you.

p.s. I don't think this will disturb the mineral/gate system due to the high ce prices and the fact that no one really seems care about what arcade levels they get anyways.