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Inferred ore

Value estimates of ore made based on the inference, or assumption of the continuation of mineralization from a known region or face to another determinable point. Inferred measurements can only be upgraded to actual measurements though proper volumetric procedures

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Industrial minerals

Minerals used in manufacturing, construction and industrial process, excluding metals, petroleum and bitumen

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Inductively coupled plasma (atomic emission) spectroscopy. (ICP-AES)

A process that analysis concentration of minerals in a substance, by sending energy through plasma, suspended in a quartz tube to produce excited atoms in the analyzed substance which reflect radiation at a wavelength associated with a particular element and its concentration. See X-ray fluorescence (XRF)

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Irradiation

Radiation that ionizes matter, rather than passing through it or reflecting from it

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Ion exchange

An exchange of ions between two electrolytes or, between an electrolytic solution and another complex, a process used in the aqueous separation of minerals

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Ion

Electrically charged particles missing one or more electrons than an atom

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Intrusive

A body of rock formed within another rock by the consolidation of magma intruded into other igneous rocks. Dissimilar to lava, which extrudes upon the surface.