Well, I got one at Alpha Centauri, just one jump away. That finally got me to design a colony ship.
All minerals except duranium and mercassium, all of them at 0.1 access except neutronium (0.7) and galicite (1!), and at 5-85 M quantities.
Sounds nearly too much delicious. I am suspecting a trap but can't get myself from walking into it.