internal reflection

A Dictionary of Earth Sciences | 1999 | 293 words | Copyright

internal reflection (IR) The reflection of light off cleavage or fracture planes just below the surface of certain slightly translucent ore minerals (e.g. cassiterite and sphalerite) and seen as a faint glow when the mineral is viewed under crossed polars in reflected-light or ore microscopy.

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AILSA ALLABY and MICHAEL ALLABY. "internal reflection." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.

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AILSA ALLABY and MICHAEL ALLABY. "internal reflection." A Dictionary of Earth Sciences. 1999. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-internalreflection.html

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