X-Ray Diffraction Comparison of Windsor Area Soil Mineralogy for Forensic Investigations

Marisa Willms, Robert Drake, Kriss Leftwich, David DeLuca, Shashi K. Jasra

Abstract


Forensic investigators look for new ways to utilize evidence from crime scenes. This project is meaning to help understand the usefulness of soil found at crime scenes, in forensic investigations. Three sites in the Windsor-Essex County area were chosen, sampled and analyzed using X-Ray Diffraction. The three main geologic regions of Windsor-Essex County are the Hamilton Group, the Lucas Formation and the Amherstburg Formation; coinciding with the three samples sites chosen for analysis and comparison. The XRD patterns were analyzed for mineralogical composition and qualitatively compared to find characteristic markers to imply geography of origin of the soil. Lab and field sampling reproducibility were proved through X-Ray Diffraction analysis. Blind tests confirmed that these three units are easily distinguishable, based on peaks present (or absent) at 9°2θ, 10.6°2θ, 29.6°2θ (calcite) & 31°2θ (dolomite).


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Copyright (c) 2017 Marisa Willms

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This work is licensed under a Creative Commons Attribution 4.0 International License.