Calidus owns 40% of Pirra Lithium Pty Ltd (Pirra) Joint Venture with 40% held by SQM subsidiary SQM Australia Pty Ltd (SQM) and 20% held by Haoma Mining NL (Haoma)
In October 2023 SQM acquired an initial 30% and ultimately increased their ownership to 40% by contributing $3M to fund exploration. SQM is assisting Pirra’s exploration campaign through a technical committee that has oversight of the proposed exploration programs and budgets.
Pirra covers 1,681km2 of highly prospective lithium tenure across Western Australia. The three project areas include the West Pilbara, East Pilbara and Northampton.
West Pilbara – Tabba Tabba South Project
The Tabba Tabba South Project covers 82km2 landholding and approximately 10km of the Tabba Tabba Shear, a major NE-trending structure that forms the boundary between the Central Tectonic Zone and Mallina Basin with the older granite-greenstone terrains of the East Pillbara Terrane. The immediate surrounds to the shear zone including on E45/2983 contain several potentially fertile granites of the Split Rock Supersuite, which is linked to lithium pegmatites across the Pilbara Craton.
Tabba Tabba South is ~20km along strike from Wildcat Resources (ASX:WC8) major lithium discovery of 180m @ 1.1% Li2O inc. 55m @ 1.4% Li2O and 400m from De Grey Mining’s (ASX:DEG) King Col discovery of 27m @ 1.14% Li2O. Tabba Tabba South is largely unexplored with no systematic or modern exploration for lithium bearing pegmatites.
Massive 1,303km2 landholding in proximity to existing lithium deposits. The Marble Bar tenements surround Global Lithium’s (ASX:GL1) Archer deposit that hosts 18Mt @ 1.0% Li2O. The Marble Bar and East Pilbara tenements mainly cover previous tin and tantalum mining areas, which are a common denominator in existing lithium mines.
Calidus has discovered lithium bearing pegmatites at Spear Hill that warrant follow-up exploration, with the maiden drill program only testing 1km of strike and demonstrating 250m continuity down-dip with mineralisation open at depth.
Pirra controls 289km2 in the Northampton region which hosts similar geology to recent lithium discoveries in the Gascoyne region.