s/n13891735

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has gloss	(noun) the angle from its axis that a crystal must be rotated before appearing maximally dark when viewed in polarized light extinction angle, angle of extinction
has gloss	eng: Extinction is a term used in optical mineralogy and petrology, which describes when cross-polarized light dims, as viewed through a thin section of a mineral in a petrographic microscope. An isotropic mineral or an opaque (metallic) mineral shows no light (i.e. constant extinction). Anisotropic minerals will show one extinction for each 90 degrees of stage rotation.
lexicalization	eng: angle of extinction
lexicalization	eng: extinction angle
subclass of	(noun) the space between two lines or planes that intersect; the inclination of one line to another; measured in degrees or radians angle

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similar	e/Extinction angle