ALS offers three fit for purpose hyperspectral imaging services, each providing a different level of data definition as appropriate for project needs. The services allow seamless information flow from the collection and interpretation of spectra, through to integration with other geologic data. Automated spectral interpretation is provided using next generation identification software. Data is presented via secure web connection to assist collaborative decision making.
Expert software-based interpretation is offered by our partner, AusSpec International, and their best-in-class aiSIRIS™ system. Full spectrally-active mineral assemblages, key parameters such as wavelengths, and calculated information like mineral phases and crystallinity are all reported in a database-ready spreadsheet within 24-48 hours after TerraSpec™ scanning.
For geochemistry-style sampling density, handheld mineral analysers like PANalytical’s TerraSpec® 4 provide rapid, high-quality spectral acquisition over a centimetre-diameter spot. You determine the sampling interval required, such as at each assay sample tag or on crushed core, and ALS trained technicians capture the data in optimal lighting conditions.
For additional data intensity and discrimination, HyLogger™, HyChips™ and other automated spot analyser systems may be implemented for medium density mineralogical data. Core boxes are fed on a conveyor belt through a frame housing the mineral analyser, which can automatically capture spectra at the centimetre scale.
All spectral mineralogy results are reported on ALS Geochemistry certificates of analysis and are available in many spreadsheet formats for rapid import into your geochemical database. All data produced by the ALS hyperspectral service offering can also be accessed through Webtrieve™ and CoreViewer™. In addition to image and downhole data display, CoreViewer™ integrates with major geological software providers, including acQuire GIM Suite for core image management, and popular 3D modelling programs like Leapfrog, Maptek Vulcan and Micromine. Complete core image sets can be consulted in line with geochemistry and other downhole data while building geometallurgical block models, allowing unparalleled verification and confirmation of complex geological boundaries.
TerraCore’s method of automated hyperspectral imaging is a non-destructive technique that can be performed on whole drill core and chip compartments. Spectral features, identified and monitored in the dataset, can be used not only to identify mineralogy, but also to observe subtle variations occurring within spectrally responsive minerals. This can have widespread implications for exploration vectoring, orebody/alteration modelling, and geometallurgy. Additionally, image data may be used as a tool to assist core logging and geotechnical investigation.
ALS clients can access a standard service comprising ultra-high resolution RGB photographs, VNIR-SWIR mineral identification maps, and a suite of key spectral and mineralogical parameters in database-ready spreadsheet format. Further processing and custom data mining can be undertaken if the geology of the project demands it. Long Wave Infrared (LWIR) spectrometers are available on select instruments, offering a unique capability that facilitates the identification of many silicates and further discrimination of carbonate minerals.
The TerraCore Intellicore™ software system can be used to take a deeper dive into the spectral data for unique geological insights, at scales from single pixels to the entire drill hole.
More information on TerraCore’s hyperspectral imaging solutions is available at their website www.terracoregeo.com. Contact for more information on core imaging solutions.