X-ray Diffractometer (XRD)

Location

Bruker D8 Advance XRD and workstation

JGB5.106

Overview

Installed in 2008, the Bruker D8 Advance provides routine, qualitative mineral identification in rock powders. The D8 XRD is now driven by automation software with integrated pattern analysis by Bruker EVA and Topas using the ICDD PDF-2 Minerals database.

Samples

Samples for XRD must be carefully ground rock powders (no gritty lumps) or fine size fractions separated by centrifugation or gravity settling. Ideally, the mineral phases of interest should be present in amounts of at least several percents.

Sample holder, detector and X-ray source

Otherwise, some method of concentrating the phase will be necessary.

Required instrument training

All internal users must take OH306 X-ray safety training through UT Austin Environmental Health and Safety. A certificate of completion must be provided to the lab manager before you can begin in-lab instrument-specific training. All in-house training on the XRD is provided on a needs basis.

Data analysis1

Note that we do have software and database capabilities to perform data analysis tasks. Data analysis and interpretation are not routine. As such, the user is responsible for their own interpretations. Those desiring assistance with data analysis and interpretation can enlist the help of lab personnel as research collaboration. Extensive support materials for data analysis are available in the lab. Users may request access.

1Section from http://nanogeochem.oucreate.com/powder-x-ray-diffraction-lab-2/