Hyperspectral imaging in geological exploration

Hyperspectral imaging has been extensively used in geological research, ranging from microscopic characterization of geological samples to airborne- or satellite-based mineral mapping. By using high resolution imaging sensors, it has been possible to optimize the data acquisition over large survey areas, reducing time and costs of field and airborne campaigns. In the laboratory, high-end hyperspectral cameras are now able to analyze and characterize a variety of samples with great accuracy and speed, enhancing or even substituting traditional methods such as XRF or XRD analysis.

The HySpex instruments have been part of a variety of studies and applications that have helped defining the state-of-the-art in hyperspectral geological exploration and exploitation. Together with our partners and customers we have developed turn-key solutions for different platforms used in demanding environments requiring high spectral fidelity, operational stability and performance repeatability; some of these are presented below.

Mineral mapping and field campaigns

A successful airborne campaign for mineral mapping requires, among other things, a consistent database of mineral spectra that can be correlated to the remote sensing data. Field campaigns to gather representative samples and collect onsite hyperspectral images are essential for building the necessary spectral libraries. The HySpex Classic instruments have been the workhorse in many of these campaigns and most of their outcomes are available for the general public.

Mine face mineral mapping

Building spectral libraries

The laboratory results can be used to build the spectral libraries needed for large-scale mineral mapping.

Mineral identification and sorting