This is an item added by the Magical Crops mod.
Uses[]
It is used to craft many items from the Magical Crops mod. It requires an iron or diamond pickaxe to sucessfully mine. When mined it has a chance of dropping 1-5 weak Magic Essence. (This can be affected by the fortune enchantment).
Natural Occurance[]
Essence Ore is found underground in layer 30 and below, and can spawn in veins of 1-5.