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First mover, Dalaroo Metals Ltd (ASX: DAL, “Dalaroo” or “Company”) advises that analysis of historical multi-element geochemical data from its 100% owned 702 km2 Lyons River base metal project has identified multiple lithium anomalies where statistically elevated lithium concentrations have been observed. These lithium anomalies are supported by elevated levels of pathfinder and indicator elements including rubidium, beryllium, caesium, tantalum and tin in the underexplored Gascoyne Province of the Capricorn Orogen in Western Australia.
Highlights
- Multiple lithium anomalies outlined.
- High Priority lithium anomalies with values of up to 125ppm Li and strike lengths of up to 1.5km.
- Lithium anomalies are supported by elevated levels of pathfinder and indicator elements including rubidium, beryllium, caesium, tantalum and tin.
- Targeted 50m spaced airborne magnetic data has highlighted five granite fertile areas with potential to host lithium bearing pegmatites. Some of the granite fertile areas coincide with zones of anomalous lithium.
- Follow-up exploration to commence immediately in June.
Dalaroo’s lithium anomalies are located approximately 50 km west of the Malinda Lithium Project previously explored by Segue Resources Ltd (renamed Arrow Minerals Ltd) (ASX: AMD – See ASX announcement from 20 September 2017) with a significant drill intersection of 14m @ 1.25% Li2O.
A total of 3,700 soil geochemical samples have been collected on a 250 X 100 to 500 X 100m grid pattern over the period from 2017 to 2021 covering an area of 22km x 10 to 15km at the Lyons River Project. Soil samples have been collected over an exposed regolith domain with granite gneisses and psammites mapped by the Geological Survey of Western Australia (GSWA). A subset of 300 samples from initial areas of interest were re-assayed using a four acid digest for lithium and associated supporting elements. This data was then analysed by a specialist geochemist.
Lithium values of up to 125 ppm are seen in the four acid data showing enrichments compared to average background granites concentrations by up to six times and are supported by elevated levels of pathfinder and indicator elements including rubidium, beryllium, caesium, tantalum and tin.
The multi-element signatures of these soil anomalies are consistent with possible hard rock lithium mineralisation.
”Importantly, assessment of our 50m spaced airborne magnetic data has highlighted five granite fertile areas which have the potential to host lithium bearing pegmatites. Some of the granite fertile areas coincide with zones of anomalous lithium and this is really exciting to guide our future exploration focus,” said Dalaroo Managing Director, Harjinder Kehal.
With our focus to date being on base metals, the geochemical data over the Lyons River has not been specifically evaluated for lithium mineralisation. Geological mapping over the project has discovered numerous outcropping pegmatites in addition to those mapped by GSWA, particularly the eastern part of the Lyons River Project area.
Next Steps
“Further assessment of our lithium anomalies in conjunction with other data sets and in-field investigation by a lithium expert geologist commencing in June will determine their significance and the ability to host lithium rich pegmatites,” said Dalaroo Managing Director, Harjinder Kehal.
A program of field geological mapping and rock chip sampling of outcropping pegmatites on the high priority lithium targets generated by multi-element data review and geophysical targets.
Dalaroo will also undertake infill soil sampling programs at the various lithium targets.
Results from the field geological mapping coupled with rock chip sampling and subsequent infill soil geochemical sampling programs will guide the next phase of exploration including RC drill testing to determine the extent of Li rich pegmatites.
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