Q
does zircon in thin section have high releif
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Yes, zircon in thin section exhibits high relief, a characteristic pertaining to how noticeably a mineral stands out from the surrounding matrix when observed under a microscope. High relief is influenced by a mineral's refractive index; the greater the difference between the refractive index of a mineral and the mounting medium (usually Canada balsam or epoxy resin), the higher the relief. Zircon has a relatively high refractive index, typically ranging from 1.92 to 2.01, which is significantly higher than that of the common mounting mediums (around 1.54 for Canada balsam). This substantial difference results in zircon appearing very prominent or "elevated" from the matrix, giving it a high relief. This property, combined with its distinctive tetragonal crystal structure, birefringence, and often inclusion-rich nature, makes zircon identifiable under polarized light microscopy.
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