Now THIS is a CoC.
With this you can refine for rarity on Nauvis once you've rushed some basic/essential rares on Fulgora.
For extra effectiveness, throw the rare quality modules you're likely using this to rush yield on, into dedicated mining drills that feed into the centrifuge.
Parameterised build for all filters.
Feed your Iron, Coal or Copper ore into the feed in belt at the bottom, extract unusual or rare ores depending on what you picked for a filter at the buffer chests, buffer chests are set to request 10k of the ore in the rarity you pick to clean up any of the ore at the rarity you specify in your nauvis logistic system.