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Fission

The release of a particles energy by having its atomic nucleus split into 2 or more lighter nuclei, induced by collision with other particles

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Foreland

 A stable area less prone to movement than the surrounding, less stable rock which become overfolded or thrust out onto it. The foreland is usually at the edge of a craton or continental part of the Earth’s crust. Foreland is also considered to be the area where a port is situated, in this context the opposite of foreland is hinterland

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Fissility

The tendency for certain rocks and minerals to split apart into thin layers

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Footwall

The host rock on the underside of mineral deposit, not usually containing target minerals

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Flux

A substance used to refine metals from ore though the binding of it’s the waste particles

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Fluorescence

The emission of energy in the form of visible light, produced by a substance exposed to external radiation such as x-rays and ultraviolet light