Zinc is one of the eight basic metals. Its alloy is brass.
Zinc in Allomancy
In allomancy, zinc gives the ability to intensify the emotions of others, an ability called "rioting". It is the external mental pulling metal; its complement is brass, the external mental pushing metal.[1] A Misting who can use only zinc is called a Rioter.
When burning zinc, an allomancer can target the emotions of a group of people or focus on only one. They choose one emotion or a group of emotions and riot those emotions. The net effect is the same as soothing the opposite emotion.
Like Soothers, Rioters are often mistrusted by those who know about their power. However, neither Rioters nor Soothers can force anyone to do anything or control their mind.
Zinc in Feruchemy
In feruchemy, zinc can be used to store mental accuity. The feruchemist can chose to spend time pouring mental clarity and speed of thought into a zinc metal mind. In exchange, the metal mind can be tapped later to gain increased mental power.
Zinc in Hemalurgy
Zinc grants a hemalurgist emotional fortitude.