Submission Type
Poster
Start Date
April 2021
Abstract
Powdered x-ray diffraction (XRD) is a technique that has the power to identify minerals and the proportion of the minerals in a mixture. A mineral is defined by a repeatable set of planes between atoms that form the crystal lattice. It is this repetition that allows the process of XRD to work. The process is done by taking a powdered sample and placing it into the machine and then shooting x-rays into the sample causing diffraction. From this using Bragg’s Law we can determine the d-spacing which is how an identity is determined for a sample and the intensity of each angle measured is used for determining proportions of the sample. The samples chosen to test the accuracy were composed of Quartz, K-Feldspar and Hornblende. These were first run as pure samples and then in a variety of mixtures to compare known ratios to XRD-determined ratios.
Recommended Citation
Horrocks, Collin, "299— Determining Accuracy of XRD from Known Samples" (2021). GREAT Day Posters. 71.
https://knightscholar.geneseo.edu/great-day-symposium/great-day-2021/posters-2021/71
Included in
299— Determining Accuracy of XRD from Known Samples
Powdered x-ray diffraction (XRD) is a technique that has the power to identify minerals and the proportion of the minerals in a mixture. A mineral is defined by a repeatable set of planes between atoms that form the crystal lattice. It is this repetition that allows the process of XRD to work. The process is done by taking a powdered sample and placing it into the machine and then shooting x-rays into the sample causing diffraction. From this using Bragg’s Law we can determine the d-spacing which is how an identity is determined for a sample and the intensity of each angle measured is used for determining proportions of the sample. The samples chosen to test the accuracy were composed of Quartz, K-Feldspar and Hornblende. These were first run as pure samples and then in a variety of mixtures to compare known ratios to XRD-determined ratios.
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