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Supergene

Minerals deposited on or near surface by precipitation of descending solutions of genetically linked material

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Sump

A low lying cavity used for the collection and disposition or redistribution of water

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Sulfur

A light, yellow orthorhombic mineral. Symbol, S

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Sublime

The change in physical state directly from solid matter to gas

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Sublevel

Any level of an underground mine beneath its main workings

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Subduction

When a plate of the earth crust is pushed back into the Earth’s mantle by the force of the descending plate