A total of 588 soil samples were collected on nominal 100 by 100-metre and 100 by 200-metre grids over areas of lithium anomalism identified during the stage I sampling program in November 2018.
This program demonstrated that the area contained evolved pegmatites carrying anomalous lithium, caesium and tantalum.
Geological mapping at the time also recorded numerous pegmatites of variable widths and lengths occurring with the project area.
Soil and rock chip sampling
In addition to the soil sampling, 64 rock chip samples were taken on numerous pegmatite mineral scatters, on rarer pegmatite outcrops and over a 3 by 2.5-kilometre area consisting of greisenised granite.
A total of 739 soil samples were collected during stage I and II programs showing:
- 322 samples greater than the weighted value of 25.9 ppm lithium;
- 29 samples highly anomalous for lithium assaying above 47.4 ppm, with a peak value of 82.4 ppm;
- Niobium up to 125 ppm;
- Caesium up to 40.4 ppm; and
- Tantalum up to 43 ppm.
There were 96 rock samples collected from two sampling programs, with analytical results showing the below:
- 17 samples above 100ppm lithium, with a peak value of 280 ppm;
- Beryllium up to 1910 ppm;
- Niobium up to 80 ppm;
- Caesium up to 62.4 ppm;
- Tin up to 25 ppm;
- Tantalum up to 20.6 ppm;
- Phospherous up to 2,400 ppm;
- Rubidium up to 1,155 ppm; and
- Total peak values of rare earth elements up to 286 ppm.
Future work plan
Mining tenements E 45/4790 AND E 45/4796 were granted without having signed heritage agreements in place, however, the company has consulted with Njamal Aboriginal Corporation and has signed the Njamal Standard Aboriginal Agreement.
Woomera is awaiting signing by the Njamal.
The company will also lodge a notice of activity with the Njamal outlining upcoming proposed work consisting of access track construction and reverse circulation drilling.