56540b4c_Crafting_Guide___Raw_Materials__Description
[Name] Redstone Dust [Uses] Redstone circuits, Redstone Torch, Compass, Clock, Dispenser, Note Block, Powered Rail, Detector Rail, Piston, Redstone Lamp [Description] 
Gathered from Redstone Ore. 4-5 dusts drop per ore.
Minecraft Crafting Guide - Raw Materials
Description