What is the "Offical" way to producing rare metall?

I think this question for a long time. The largest boiler need Adamantium to export Steam, but Bedrock Mining Drill get very little Adamantium from bedrockdust. And metall like Naq and Trinium only spawn in End with luck. I know we can find these Ore in GC mars, but I trust that there has to be an “offical” way too produce these metall.
Are those metall design for Matter-Technology? People should use Matter Replicator to produce them in “Vanilla Gregtech”?


I just want to make sure that I won’t missing any Tech-tree (and finding a good reason to delete GC from my modpack).


Yeah the End is needed for that, plus Matter Fabricator. That is the intended way.