I never did deal with the resource icons, mainly because for a long time I never even knew where they were. Apparently they are contained inside an obscure little file. Offhand, does anyone remember what it was called and its directory path?

Since I never dealt with the icons, I don't know how they are organized in the file. For instance, each race has its own supply and gas icon, but all use the same mineral icon. Are the icons grouped by race, type, or something else? Can each race have its own mineral icon?

game\icons.grp in StarDat.
You cannot use Retro with these because they are uncompressed.