Translations:GregTech 5/Mining and Processing/1/en

Ores
disables all Vanilla ores (except Emerald Ore, because Mojang did weird things with it) and replaces them with its own ore generation patterns. These patterns are compatible either by default or through configuration with almost all ores from almost all other mods, so unless explicitly noted, ore generation from other mods can and should be disabled, as GregTech will compensate.