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===Occurrence===
{{See also|:Category:Zinc minerals|l1=Zinc minerals}}
Zinc makes up about 75 [[Parts per million|ppm]] (0.0075%) of [[Earth's crust]], making it the 24th most abundant element. Typical background concentrations of zinc do not exceed 1 μg/m<sup>3</sup> in the atmosphere; 300 mg/kg in soil; 100 mg/kg in vegetation; 20 μg/L in freshwater and 5 μg/L in seawater. The element is normally found in association with other [[base metal]]s such as [[copper]] and [[lead]] in [[ore]]s. Zinc is a [[Goldschmidt classification#Chalcophile elements|chalcophile]], meaning the element is more likely to be found in minerals together with [[sulfur]] and other heavy [[chalcogen]]s, rather than with the light chalcogen [[oxygen]] or with non-chalcogen electronegative elements such as the [[halogen]]s. [[Sulfide]]s formed as the crust solidified under the [[redox|reducing]] conditions of the early Earth's atmosphere. [[Sphalerite]], which is a form of zinc sulfide, is the most heavily mined zinc-containing ore because its concentrate contains 60–62% zinc.

Translations:Zinc/10/en - Revision history

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