La Salada Salar

Approximate Size: 300 Hectares
Ownership: 100% OrganiMax Nutrient Corp.

Of the fifteen Zacatecas-area salars, La Salada appears to have the highest average sediment-hosted lithium grade and is the first salar with confirmed high-potassium brines. Historical sediment sampling indicates potassium values ranging from 0.11% to 9.06% with an average value of 5.3%; and lithium values ranging from 25 to 2265 ppm with an average value of 880 ppm. As with Santa Clara, these historical values were obtained from pit sampling the salar on a 100-metre grid; the pits were sampled every vertical metre down to five metres to collect 711 samples.

In 2016, OrganiMax (as Alset Energy) assayed a composite sample made up of 10 separate samples from this salar material. This composite sample returned a grade of 2.47% potassium and 1460 ppm lithium. The Company also carried out several leaching tests on the composite sample, the results of which indicate a potassium recovery of 82% and a lithium recovery of 86% from the sediment samples.

Drilling at La Salada in 2017 included one triple-tube diamond drill hole which ended at 53.15 metres in limestone, and 40 drill-mounted auger holes on a 150 by 200-metre grid across the salar. Because of poor core recovery and slow progress, the second diamond drill hole was postponed. Auger holes ranged from 4.5 to 25.5m deep, with an average depth of 14.5m. All of the auger holes encountered sub-surface brines at approximately 1.2 to 9 metres depth. Perforated PVC casing was installed in each auger hole to allow brine to flow into the hole and facilitate sampling.  Encouragingly, analysis of the brine samples demonstrates high-potassium and sulphate, with relatively low contaminants such as magnesium and calcium in comparison to analogous potassium brine resources.

During the auger program, composite sediment samples were taken along 1.5 metre intervals. 5 holes along a north-south transect of La Salada were analyzed in 2017; weighted averages from these samples are slightly elevated in comparison to the historical pit samples with 3.58% potassium and 975 ppm lithium. The remaining sediment samples collected during the auger program are currently undergoing analysis.

Recently, the company announced its Maiden Resource Estimate and independently released a statement at La Salada.

The statement demonstrates the different grades within the three modelled domains (high-potassium, high-lithium and low-lithium) and to highlight the potential to mine a higher-lithium product at La Salada.

Maps, Data and Reports