Tsinki leidub looduslikult maakoores mineraalide (sfaleriidi) koostises, samuti on metall esinev inimese kehas. Looduses ei esine tsink siiski vaba molekulina vaid sageli hoopis tsinksulfiidi või tsinkoksiidina.
Zinc oxide, ZnO, is one of the most important zinc compounds. It can be prepared in a state of high purity and in a variety of crystal shapes and sizes by burning zinc vapour in air. Because of its high heat conductivity and capacity, zinc oxide is frequently incorporated into rubber as a heat dissipater.
