National Virtual Core Library NT

The AuScope National Virtual Core Library (NVCL) is a component of a collaborative research infrastructure project funded by the Federal Government's National Collaborative Research Infrastructure Strategy (NCRIS) within the Department of Innovation, Industry Science and Research. 

The project involves collaboration between CSIRO, AuScope (the administrative company) and all State and Territory geological surveys.


The NVCL's primary goal is to progressively build an Australia-wide drillcore database comprising high-resolution imagery and mineralogical data from spectroscopic scanning. 

The data can be used to further the understanding of the properties of the upper one to two km of the Australian crust, facilitate geoscience research and make the data available to the public via a web-based delivery system. The data are being collected using CSIRO's HyLogger™ system. 

The NVCL Database is hosted through the Australian Geoscience Information Network (AusGIN) comprising data from all the surveys.

Recent Highlights

As of February 2017, there are over 117,000m of scanned core from 391 drillholes in the public domain. There are 269 TSG datasets available on a memory stick card by request from the Minerals and Energy Infocentre. NTGS Records and HyLogger Data Package interpretation reports are available on some individual drillholes. Get the List of Scanned Holes (71.8 kb) for further information on what data is currently available.

In late February 2010, the Northern Territory Geological Survey received its HyLogger at its Core Library Facility in Darwin.

In June 2011, the HyLogger was upgraded with the addition of a TIR spectrometer, which allows for the identification of more minerals (such as quartz, feldspars and other silicates).  

Several external organisations have taken advantage of the HyLogger being available to Industry and Research groups:

If you want to learn more about the HyLogger and see it in action or scan your core you can email to arrange a visit.


As well as output via the NVCL framework, NTGS also provides the data integrated in datasets from focal areas as part of its program of delivering data packages for the Creating Opportunities for Resource Exploration (CORE) exploration initiative. 

Many of the scanned holes were co-funded by the NT Government through the Geophysics and Drilling Collaborations program, an initiative that provides exploration companies with up to 50% of costs  (to a maximum of $100,000) to conduct projects in underexplored areas.

Initially a small number of datasets were released as NTGS Records. Since late 2013, a new series of HyLogger Data Packages (HDP) has been developed to aid explorers in accessing and interpreting hyperspectral data collected by processing of core through the HyLogger. 

These packages contain The Spectral Geologist (TSG) format datasets that can be viewed using the (free) TSG Viewer, high resolution imagery of the core and a summary of the major findings, including a comparison of existing stratigraphic logs with mineral domain boundaries as identified in the hyperspectral data. Each HDP covers a single drill hole and available packages are listed in the product catalogue. HDPs are large datasets and are therefore are currently sent out on request.  

In addition to the individual HyLogger Data Packages, interpretations across a number of holes in a region may be released as NTGS Records or Technical Notes.  Technical Notes may include a comparison of mineral matches from the HyLogger with XRD mineral results (eg; Technical Note 2013-003) or correlating stratigraphy using HyLogger (Technical Note in prep). Browse GEMIS for a list of publications

NTGS is encouraging explorers to utilise the currently available datasets by requesting them via the Minerals and Energy Infocentre and also reviewing the data summaries in the NTGS Records. 

The List of Scanned Holes (71.8 kb) and HyLogger Drillhole Map (3.1 mb) are both regularly updated with new data as it’s released.

Last updated: 27 March 2018