Thaumic Tweaks

Thaumic Tweaks is a mod that fixes some issues present in Thaumcraft and allows you to tweak some of it's aspects. (Vis Crystals and how they generate in the world, currently)

Features:

• Options for disabling crystal generation in certain biomes and dimensions (including specific crystal types, like Fire/Ignis Crystals);
• Options for tweaking the maximum and minimum height that crystals can spawn in;
• A new optional model for the Vis Crystals that more closely resembles the item sprites;
• Fixes shift clicking the slots in the Research Table not transfering the items to the player's inventory

If you want to mess with the other ores Thaumcraft adds I reccomend disabling their generation in Thaumcraft's config file and using CoFH World to generate them instead.
In case you're wondering, no, you can't replicate Thaumcraft's crystal generation using CoFH World, hence why I made this mod.