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Location: 177 km NW from Salta, Argentina
Level 43, 120 Collins StreetMelbourneVictoria, Australia3000
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March 06, 2025 - Rio Tinto has completed its acquisition of Arcadium Lithium plc (“Arcadium Lithium”) (NYSE: ALTM) (ASX: LTM) for $6.7 billion, following the sanctioning of the Scheme of Arrangement by the Royal Court of Jersey on 5 March. Rio Tinto is now the ultimate parent company of Arcadium Lithium, which will become Rio Tinto Lithium.
Salar de Cauchari is a brine deposit with enriched concentrations of lithium and potassium.The Cauchari project is a lithium salt lake deposit, located in a closed basin in the Andean mountain range in Northern Argentina.Salar de Cauchari is a mixed style salar, with a halite nucleus in the centre of the Salar overlain with up to 50 m of fine grained (clay) sediments. The halite core is interbedded with clayey to silty and sandy layers. The Salar is surrounded by relative coarse grained alluvial and fluvial sediments. These fans demark the perimeter of the actual Salar visible in satellite images and at depth extend towards the centre of the Salar where they form the distal facies with an increase in sand and silt. At depth (between 300 m and 600 m) a deep sand unit has been intercepted in several core holes in the SE Sector of the Project area.The brines from Salar de Cauchari are solutions nearly saturated in sodium chloride with an average concentration of total dissolved solids (“TDS”) of 290 g/l. The average density is 1.19 g/cm3. Components present in the Cauchari brine are potassium, lithium, magnesium, calcium, chloride, sulphate, bicarbonate and boron.DimensionsThe Mineral Resource model covers 117.7 km2 . The top coincides with the brine level in the salar, measured by monitoring wells and geophysical TEM and SEV tests. The lateral boundaries are defined based on the Cauchari tenements and by the brine / freshwater interface along the eastern and western limits of the Salar as based on the physical TEM and SEV boreholes. The bottom of the model coincides with a surface created from the bottom of the boreholes.
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