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Hylogging spectral analysis

HyloggingTM spectral analysis

As an industry leader in laboratory services ALS was the first commercial laboratory to install the HyLogger™ Technology an include it in iron ore geometallurgical services. HyLogging™ is a fast, inexpensive, non-destructive laboratory technique for determining selected sample mineralogy. It works by collecting high density spectral reflectance data and continuous high resolution colour imagery from drill core, chips and powders.


HyloggingTM services & applications

The HyloggerTM operates using a semi-automatic step and measure procedure that allows it to process a range of sample materials from continuous core to chips and pulps. The HyLogger™ can log on average ~700m of core per day. Chip samples can be measured in their original trays and are scanned in groups of three, allowing approximately 2000–3000 samples to be logged per day. The instrument operates at a wavelength range of 400–2500 nm and is suitable for detection and analysis of an extensive list of minerals, including:

Digital mineral indices (also known as spectral parameters) can also be extracted from the HyLogging™ data to represent changes in relative proportions (such as the hematite:goethite ratio or relative clay proportion) as well as changes in the chemistry of key minerals. These indices are numerical values that can be analysed and plotted in a similar way to geochemical data.

In addition, the HyLogging™ system also collects high resolution photographs of the core trays, providing a detailed digital archive of colours and textures in the core samples to compare with the spectral data. A digital munsell colour value can also be calculated directly from the visible spectral data.

Core or chip box photos captured by the HyLogger™ system can be archived and exported to CoreViewer™ software for easy retrieval and viewing.

Depth start and end information is stored for each photograph, allowing a search on depth for specific boxes or samples. Most importantly, the CoreViewer™ software creates a continuous photographic core strip allowing uninterrupted graphical comparison of depth-registered data with the core itself.

Any type of depth-registered data may be added into CoreViewer™, including geochemistry, mineralogy, and downhole geophysics. A secure key is required to link all data and the core strip in each CoreViewer™ session. Clients can use their own CoreViewer™ software or ALS can facilitate the process, the choice is yours.

The principle commodity currently utilising the HyLogger™ technology is iron ore, however, it has applications for other mineral commodities such as uranium, gold and base metals. The spectral data collected by the HyLogger™ can also be used to assess the clay type and crystallinity as well as depth of oxidation, when drilling through deep weathered lateritic regolith profiles as seen in locations such as Australia, Africa and parts of Brazil.

Other related services

Hylogging services routinely occur in conjunction with sample preparation or geometallurgy testwork and chemical analysis.

Don't quite see what you’re looking for or need more information?

Hyperspectral analysis is technical and we are more than happy to walk you through the process of utilising the hylogger.

Please contact us for further details.

Here are some frequently asked questions

Associated testwork services

Related testwork

HPGR test products can be utilized as part of larger metallurgical testwork programs in the production of suitably sized product for downstream testing including:

Click on the above links or contact us for further information. We can integrate a full program for you if required.