Zinc

GregTech
Small Zinc Ore can be found at a height of 30 to 60 in the Nether Overworld and The End with a relative frequency of 12. Zinc can be obtained by breaking down the alloys, , and , as well as a byproduct in the ore processing of , , , , and.

Flaxbeard's Steam Power
Zinc Ore can be found in the overworld between y-levels 0 and 70. There are approximately 10 ore veins per chunk. As of version 0.27.0, if enabled in the configuration file, it can be found in the Nether and the End as well. It has the same spawn rates in these dimensions, except in the End and Nether it is found below Y level 128.

It can be used to create a Storage Block, Plate, and Nugget. Storage Blocks and Nuggets are created the same way as any other. Plates must be created by putting Zinc Ingots into a heated Crucible, at which point the molten metal should be poured into a Mold with a Plate Mold. Six nuggets are used in the creation of a Zinc Plate, which makes it unable to be used in other mod's recipes requiring their own Zinc Plates.