Mineral Identification and Phase Mapping of Geologic Samples Using Agilent 8700 Laser Direct Infrared Chemical Imaging System

The Agilent 8700 Laser Direct Infrared (LDIR) chemical imaging system enables the rapid collection of hyperspectral data in the mid-infrared (mid-IR) fingerprint region, providing detailed chemical and mineralogical insights into geologic samples. 

This technique allows for the non-destructive analysis of polished rock sections cut to the size of a standard microscope slide, generating high-resolution chemical imaging data with minimal sample preparation. By acquiring spectral information at each pixel, the LDIR system produces a comprehensive hyperspectral dataset that can be processed through spectral matching against mineral databases and statistical methods such as principal component analysis (PCA).  The integration of LDIR technology into geologic workflows enhances mineral characterization, offering a powerful and efficient alternative to traditional spectroscopic and imaging methods for phase mapping in complex rock matrices.

Presenter: Benjamin J Southwell (Assistant Professor of Bio-Analytical Chemistry, Lake Superior State University)

Benjamin Southwell holds a bachelor’s and Master’s degree in Chemistry from Lake Superior State University (LSSU) and Central Michigan University, respectively. With a research focus on studying the analytics of cannabinoids and terpenes in cannabis products as the Coordinator for the LSSU Cannabis Center of Excellence. Currently he instructs courses in Forensic, Analytical, and Cannabis Chemistry.