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 and most of the 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 kilometres of the Australian crust and to facilitate geoscience research. The data are being collected using CSIRO's HyLogger™ system then are processed and interpreted using The Spectral Geologist (TSG) software.

In late February 2010, the Northern Territory Geological Survey (NTGS) 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).

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

As of November 2020, there are over 159,000m of scanned core from 552 drillholes within the Northern Territory (NT) in the public domain.

Several external organisations have taken advantage of the HyLogger being available to Industry and Research groups. For more information or to request core scanning, please email


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.

Many of the scanned holes were co-funded by the NT Government through the Geophysics and Drilling Collaborations program. The List of Scanned HolesXLSX (5.7 MB) and HyLogger Drillhole Map PDF (12.4 MB) are both regularly updated with new data as it's released.

Initially a small number of interpreted datasets were released as NTGS Records but since 2013 interpreted datasets are released as HyLogger Data Packages (HDP).

Each HDP covers a single drill hole and contains a summary of the major findings, including a comparison of existing stratigraphic logs with mineral domain boundaries as identified in the hyperspectral data, The Spectral Geologist (TSG) format datasets can be viewed using the (free) TSG Viewer and include high resolution imagery of the core.

In addition to the individual HyLogger Data Packages, interpretations across a number of holes in a region may be released as NTGS Records and  some ad hoc, smaller informational reports, for example a comparison of mineral matches from the HyLogger with XRD mineral results, are also issued.

Presentations include:

To access data and reports on hyperspectral data, search the NTGS product catalogue.

Last updated: 12 May 2020

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