Over 100 new and updated datasets available.
Spectral scanning of drill core since the start of July 2022 has seen just over 5,700 m completed, representing 55 new datasets added to South Australia’s National Virtual Core Library (NVCL) node. A further 51 spectral datasets have been updated and replaced online. The new cores come from a variety of Geological Survey of South Australia (GSSA) projects including the Delamerian National Drilling Initiative, GP2: next generation mineral systems mapping .
A total of 120 chip trays representing 3,035 m have also been scanned from exploration targeting gold and base metals in Archean basement about 170 km northwest of Tarcoola, and samples identifying chromites in the northern Flinders Ranges.
The recent AuScope NVCL workshop at CSIRO’s Australian Resource Research Centre in Perth was attended by the GSSA’s Georgina Gordon and Alicia Caruso. It provided an opportunity to develop spectral processing and viewing software with CSIRO and discuss the latest applications and updates, as well as developing spectral analysis techniques from collective knowledge growing at NVCL nodes embedded at the various Geological Surveys. Kurt Johnson from the Alaskan Geological Survey also participated. Kurt is looking into a variety of methods to digitising drill core, drill chips and rock samples and how to bring that knowledge into the digital realm.
To view and download the latest spectral geoscience data visit either:
Figure 1 (a) Sample of vivid green gaspeite (NiCO3) from gossan of nickel sulfide ore, Otter Juan, Kambalda, Western Australia. This sample was donated to AMIRA’s Data Metallogenica (DM) collection by Ken Cross. (b-c) Gaspeite shortwave and thermal infrared hyperspectral data. Gaspeite is an uncommon secondary mineral in nickel sulfide deposits. As custodian of the DM physical collection the GSSA undertakes spectral scanning of the samples.
– Georgina Gordon, October 2022
