Well it's not an issue at all but an enhancement.
Players can get like infinite iron/gold/diamonds since "Shards of Minium" can drop from nearly all mobs.

• So they are basically just build an enderfarm (just an example) and farm the shards like crazy to make "Minium stones".
• Then make some iron out of them + obsidian.
• Next step would be making gold out of the stones + iron.
• Now you can make the diamonds.

I think that droprate should be configurable for every mob.
The better way would be a blacklist on which you can put mobs so they won't drop that shards.

That's infinite in the sense that it is farmable, as opposed to a positive feedback loop exploit (like with macerators/pulverizers). This can be done in any number of ways in which I cannot control them all. You are correct that the answer is in config options, but the solution is greater than that.

Minium Shards were only meant as a stop gap measure so that I could do a pre1 release for everyone with a basic transmutation stone. Coming in pre2 is the DynEMC system which provide better configuration and support for EMC values on things (which the recipes are based on), and in the event that a recipe doesn't match up with the EMC values specified the recipe is not used.

That should address both sides of the problem; shards being plentiful (they won't be come pre2) and custom tuning of the "OPness" of things.

Oh thanks for that detailed and fast answer.
Alright I will just wait until the pre2 update then.

In the future Shards of Minium won't drop from mobs - but rather they will occasionally drop when your Minium Stone breaks