Our XRF spectrometers are suitable for the analysis of a number of different materials and matrices.
The instrument is used primarily for the characterization of archaeological obsidian and fine-grained volcanic rocks, though other applications are possible. A library of samples from obsidian sources is maintained in the laboratory, allowing direct comparisons with artifacts at the time of analysis. A full listing of lithic-source samples available for use with the Tracer 5i is available here.
Dr. Boulanger also maintains a library of certified reference materials to allow development of custom applications when needed.
Precious Metals
Obsidian
Fine-Grained Igneous Rocks
A calibration for fine-grained volcanic rocks (FGVs) was created by Boulanger using a set of 43 well-characterized obsidian reference samples developed at the Archaeometry Laboratory at the University of Missouri Research Reactor, as well as standard reference materials (SRMs) from the United States Geological Survey (USGS) and the National Institutes for Standards and Technology (NIST).
GeoExploration/Mining
This calibration is intended for the general analysis of a range of geological matrices in several forms (cores, chips, soil). The calibration quantifies elements between Mg and U, including traces and majors. Loose powders can be analyzed by packing them firmly into a plastic cup sealed with a 4µm film window.
Mudrock
The Mudrock calibration is intended to be used in the analysis of shales and other sedimentary rocks, particularly within the energy industry. The calibration targets those elements considered markers for strata associated with regolith and laterite. Samples can be analyzed as pressed pellets or in whole-rock form.
Spectrometer Mode
Spectrometer Mode can be used to identify the presence or absence of most chemical elements. This is particularly useful for materials for which a specific calibration has not been, or cannot be, developed. Uses might include scanning materials for heavy metals or toxic elements.