Zephyrite is a weak but extremely common ore - the closest thing this mod has to silicon, since it's the key ingredient behind most of the mod's logic gates, the Wireless Redstone Relay and the Redstone Clock.

Generation: Overworld, in stone and deepslate. It generates from Y -16 to Y 112, in clusters of 10, with 14 veins per chunk - the most common ore in the entire mod - and never disappears when exposed to air.

Drops: 1 Raw Zephyrite per block, boosted by Fortune, or the ore block itself when mined with Silk Touch.

Tool stats: 190 durability (the lowest in the mod), 5.0 mining speed, +4.0 attack damage bonus (the lowest in the mod), enchantability 9. It is not correct for stone-tier-only blocks, the weakest tier gate of any material here.

Best used for: redstone engineering rather than combat or mining. Keep a steady supply of Raw Zephyrite on hand if you plan to build logic circuits, wireless relays, clocks or rail controllers.
