Lithium Australia NL (ASX: LIT) has accumulated significant experience in geochemical modelling of prospective lithium terrains and in particular the soils derived from pegmatites containing lithium micas.
STRONG LITHIUM ANOMALISM AT SEABROOK, WESTERN AUSTRALIA Highlights
- High-density soil geochemistry completed using laser induced breakdown spectroscopy
- Lithium anomalism correlates with other geochemical techniques
- Results pave the way for real-time lithium analysis for drilling soon to commence at the Electra project in Mexico. Summary
Lithium Australia NL (ASX: LIT) has accumulated significant experience in geochemical modelling of prospective lithium terrains and in particular the soils derived from pegmatites containing lithium micas. The Seabrook Rare Metals Venture (LIT 80%, and Tungsten Mining NL ASX: TGN, 20%) consists of six exploration licences, E77/1853, 1854, 1855, 2021, 2022, and 2035, located on the shores of Lake Seabrook, approximately 60km north-east of Southern Cross and 10km south-east of Koolyanobbing, Western Australia. Southern Cross is 350km east of Perth along the Great Eastern Highway (Figure 1). Tungsten mineralization within E77/1853 and 1854 is associated with extensive skarn mineralisation which exhibits strong alkali metal halos, which are similar to the halos around lithium pegmatites identified further south on E77/2279.
Hand-held laser induced breakdown spectroscopy (LIBS) was used to compare real-time lithium spectral data, with various geochemical signatures generated with field portable XRF equipment. The comparative results are shown in Figures 2 and 3. The lithium values shown in Figure 3 should not be considered absolute values, but rather comparative values that are referenced to a pre-loaded calibration curve installed in the SciAps Z500 machine used for the program. The results show conclusively that pattern of lithium anomalism determined by hand-held LIBS reflects the areal extent, and shape to field-portable XRF alkali metal anomalism which in this area is a good pathfinder for lithium.
Advanced geochemical applications
The success of the LIBS lithium geochemical modelling has led to more extensive evaluation for immediate use on the Electra Project (LIT 25% and Alix Resources Corp, AIX-TSX: V, 75%). A SciAps Z300 machine has been calibrated using a wide grade range of lithium clays generated from recent sampling (ASX release 13 October 2016). Real-time data will be used to maximize the benefit of drilling, scheduled to commence in the near future.
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