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Imperial jade

A semitransparent variety of jadeite commonly used as a Gemstone. Usually found in China

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Insulate

To shield the passage of energy such as heat, sound and electricity

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Impact mill

An machine which processes mineral ore by mechanically crushing it between steel plates

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Insoluble

Being chemically resistant to dissolution in a particular substance

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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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Induced polarization

A method of geophysical surveying utilizing electrical currents and conductivity readings to outline or pinpoint areas of mineralization