| Lead is classified as a chalcophile under the Goldschmidt classification, meaning it is generally found combined with sulfur. |
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| Zinc is a chalcophile, meaning the element has a low affinity for oxides and prefers to bond with sulfides. |
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| Third, the chalcophile and siderophile elements form a large group occupying the middle of the diagram. |
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| They come from the same ore sources, both are heavily chalcophile, and can form the same soluble complex. |
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| Moreover, mercury is a strong chalcophile, like zinc and cadmium, and the three metals are found as their sulfide minerals. |
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