A new map tool has been added which allows you to plot the minerals on planets in your empire. To use the new tool go to your "Map Tools" drop down and click on one of the four minerals, Neutronium, Duranium, Tritanium or Molybdenum. The system will then plot the minerals on the planets you own or have explored.
There will be rings in two colors, Cyan and Orange. Orange rings represent minerals which have already been mined out and are on the surface of the planet. Cyan represents unmined minerals. The thickness of the cyan rings represents the density of the mineral. Thick rings mean high density, thin rings mean low density.