That article: https://ftb.gamepedia.com/GregTech_6/Stones_and_Minerals#Ores says GregTech ore blocks do not work exactly like other ore blocks. Most mods treat their ores as single blocks, with nothing special to them except for the few that must be harvested with Silk Touch or can be mined with …

The answer is: yes Source: recently mined a diamond vein, apatite vein, lignite coal vein, chromite vein and a cassiterite vein with bc quarry powered by 4 ev lithium manganese batteries.