Zinc is characterized as a blue-grey metal used for galvanising (coating) iron and steel to protect against Rust.

The main zinc mineral is sphalerite. Brass is an alloy of copper and zinc. The chemical symbol for zinc is Zn. Zinc is used extensively by the automotive, electrical, and hardware industries

-see also:
"Zinc" is in the NAICS Code "212231"
  (Lead Ore and Zinc Ore MiningZincite mining and/or beneficiating)