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Porphyry

An igneous rock mass where which larger crystals , called phenocrysts, are set in a finer grains

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Pulp

Processed solid mineral ore in solution

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Pseudomorph

A mineral having the external crystal form of one mineral with alternate internal chemistry

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Prove up

The process of establishing economic value of a mineral deposit

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Proven reserves, Measured reserves

Reserved that have calculated based on the assay of closely spaced drill core, used to prove the extent of mineralization and to create a three dimensional image of the deposit

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Proton

An elementary subatomic particle with a single positive electrical charge and mass of approx. 1,847 times an electrons

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Prospect

A mining property with some indication of mineralization which has not yet been measured by any formal extent, other than possible assay on select samples

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Precious metal

Dense, rare and valuable metals, such as gold, silver, and platinum group elements