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National Geochemical Survey of Australia: Analytical Methods Manual

Created 17/10/2025

Updated 17/10/2025

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The National Geochemical Survey of Australia (NGSA) has collected samples from 1315 sites located in 1187 catchments (~10% of which were sampled in duplicate) covering over 80% of Australia. At each site, two depth ranges were sampled and two grain size fractions were separated, giving 5260 samples to be analysed. Samples were analysed for: 1 - Total content of multiple elements in Geoscience Australia's laboratories using x-ray fluorescence (XRF) and inductively coupled plasma-mass spectrometry (ICP-MS) 2 - total content of fluoride (F) in commercial laboratories using ion specific electrode (ISE) 3 - total content of platinum group elements (PGEs) in commercial laboratories using fire assay and ICP-MS 4 - aqua regia soluble content of selenium (Se) in a commercial laboratory using ICP-MS 5 - aqua regia soluble content of multiple elements, including low-level gold (Au), in a commercial laboratory using ICP-MS 6 - ligand-based extractable content of multiple elements in a commercial laboratory using ICP-MS. The detailed procedures for analysing the NGSA samples in various laboratories are described.

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Additional Info

Field Value
Title National Geochemical Survey of Australia: Analytical Methods Manual
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/45896b10-ad27-40c4-90be-843b87be71ee
Contact Point
Geoscience Australia Data
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        112.0,
        -44.0
      ],
      [
        154.0,
        -44.0
      ],
      [
        154.0,
        -10.0
      ],
      [
        112.0,
        -10.0
      ],
      [
        112.0,
        -44.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Geoscience Australia

Data Source

This dataset was originally found on Geoscience Australia "National Geochemical Survey of Australia: Analytical Methods Manual". Please visit the source to access the original metadata of the dataset:
https://ecat.ga.gov.au/geonetwork/srv/eng/csw/dataset/national-geochemical-survey-of-australia-analytical-methods-manual