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Plutonic

Refers to rocks from plutons transported from great depth

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Pluton

An intrusive igneous body, usually measured in kilometers

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Plug

A small offshoot of solid lava from a larger flow

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Pleochroism

The property of a mineral where the colour of grains vary with angle observed

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Plasma

Its own state of matter, apart from gases, solids and liquids with equal amounts of positively and negatively charged particles

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Placer

A deposit containing target minerals such as gold, platinum, diamonds and other gemstone found in loose or loosely compacted soil, sand or gravel