HyLogger drillhole report for NDIBK04, MinExCRC, National Drilling Initiative, Campaign 1, East Tennant, Northern Territory
Details:
Title
HyLogger drillhole report for NDIBK04, MinExCRC, National Drilling Initiative, Campaign 1, East Tennant, Northern Territory,
Creator
Smith, B. R.,
Editor
MacDonald, G. C.,
Collection
E-Publications,
E-Books,
PublicationNT,
HDP0112,
Well No : NDIBK04,
Date
2023-06-27,
Location
Warramunga Province,
Georgina Basin,
Abstract
The results in this report were obtained using The Spectral Geologist (TSG) software. The software uses The Spectral Assistant (TSA) as a default to identify minerals and their abundances for the Short Wave Infrared (SWIR) and Thermal Infrared (TIR) spectrum. TSA is a general unmixing algorithm and is trained on a relatively small subset of commonly-occurring minerals. It does not make the right identifications all of the time. The unmixing is an interpretation result of ‘best fit’. TSA abundances are relative abundances, only the two (or three) most spectrally active
minerals identified in the Short Wave Infrared (SWIR) and the three (sometimes four) most spectrally active minerals in the Thermal Infrared (TIR) wavelengths are reported. If there are more than two or three minerals actually present in the sample in the SWIR (or three to four minerals in the TIR) then this is not reflected AT ALL in the reported abundances. Minerals are reported as a fraction of the overall spectral fit rather than actual quantifiable concentrations (total minerals present add up to 1). The SWIR wavelength only identifies hydrous silicates and carbonates. It does not reflect the TOTAL mineralogy of the sample. The Northern Territory Geological Survey (NTGS) processed datasets exclude some minerals in the TSA library if the mineral is a poor spectral fit or unlikely in that geological environment, introducing a further element of interpretation.,
Notes
Made available by via Publications (Legal Deposit) Act 2004 (NT),