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About XRD

X-ray diffraction (XRD) primarily determines the mineralogy of a powdered sample based on the interactions of X-rays and crystals. In accordance with Bragg’s law, the X-rays diffract through a crystal lattice of the powder, generating a pattern (diffractogram) representing diffraction angles around the focus of the X-rays. Crystalline substances have unique diffraction patterns, which can be compared to diffraction patterns of known substances to determine the composition of the unknown powder.  In addition to identification, XRD can be used to measure the crystal properties and crystallite size of crystalline materials, as well as to quantify mixtures of crystalline substances.