Titlebook: Crystal Identification with the Polarizing Microscope; Richard E. Stoiber,Stearns A. Morse Book 1994 Springer Science+Business Media Dordr

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Uniaxial Crystal Optics, uniaxial grain and to relate the optical directions to the crystallo-graphic directions. The uniaxial indicatrix, a device that summarizes the values of the refractive indices and the orientation of the associated vibration directions for all directions in a uniaxial crystal, is described in this chapter.

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Identification of Uniaxial Crystals,in identification in immersion mounts are those related to refractive index, optic sign, and color. In thin section, the most useful optical properties are relief, birefringence, and optic sign. Crystallographic properties that are most useful include those related to crystal habit, cleavage, and twinning.

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https://doi.org/10.1007/BFb0101268In this chapter we consider the result of light waves traveling the same path from the same source. This consideration will lead in turn to an explanation of the colors of anisotropic material viewed between two polarizing devices (polars) in white light. These colors are known as interference colors.