The HCONFIG can set the rate at which new minerals are formed in the planetary core of all worlds. The new minerals are formed by the natural isotopic break down of uranium into trans-unranium elements.
Density ranges from 100 (Large Masses) to 1 (Very Scattered) More minerals are formed on planets with higher mineral densities than on planets with lower mineral densities. This takes place every turn.
If set to 5 (default) and a planet has a density of 100% (Large Masses) 5 kt of each mineral will appear each turn in the planet's core. This must be extracted by mineral mines to be used to build ships.