| Spectrally significant alteration anomalies have been observed for many years by geochemists using various remote sensing platforms. Spectral properties of this alteration may include bleaching of redbeds, clay mineralization, or tonal anomalies. Real time detection and rapid interpretation of these types of anomalies are now possible using small ground based spectrometers that can take spectral measurements in the visible and near infrared part of the electromagnetic spectrum. High resolution micro-sized spectral reflectance surveys can be run for detailed mapping of geochemical variations in very near surface soils. Typically, geochemical survey with large sample populations are cost prohibitive, which severely limits the amount of detail that is required to make an informed exploration decision. Instrument protability and quick reading response allows for a greater number of samples to be used, yielding a more precise representation of the anomaly under consideration. | |
