THE DRILL SERGEANT: Core Exploration (ASX: CXO) announced it has taken delivery of all outstanding assays relating to soil and rockchip sampling undertaken at the company’s Barrow Creek lithium project in the Northern Territory.
Core Exploration said the results from the regional-spaced soil samples (over 2,000 samples collected) indicate there being a substantially larger footprint of lithium anomalism than depicted by historic pegmatite workings.
Core said its baseline exploration highlighted a new large prospect area, which has optimistically been called Tesla, where elevated lithium in soils form a five kilometre long arcuate trend highlighting previously unmapped pegmatites.
Another prospect – the Ringing Rocks prospect – a distinct lithium-in-soils anomaly has been identified coincident with the outcrop position of two large pegmatite bodies, with surface expressions measuring 700 metres by 220 metres and 360m by 150m that Core thinks may represent a single pegmatite body of approximately 1200m by 300m with surface rock chips assaying up to 0.6 per cent lithium oxide (Li2O).
The company said rockchips and detailed mapping it has undertaken have confirmed the lithium potential of a number of historic prospects, including Jump Up, Ballace’s Claim 1 & 2, Tabby Cat, Hugo Jack’s, Boyce’s Corner, Johannson’s, Jody’s, Slippery and Krakatoa.
Many other pegmatite occurrences were identified and investigated during the conduct of regional reconnaissance work.
“Historical pegmatite prospects and mine areas considered prospective for Lithium-Caesium-Tantalum (L-C-T) Type pegmatite were geologically appraised and mapped, then sampled to determine representative whole rock geochemistry,” Core Exploration said in its ASX announcement.
“Pegmatite from many of these prospects appear to be highly weathered, and it is likely that the pegmatites may be more widespread than currently revealed, under thin cover.
“Analysis of assay results from the current program suggests coincident soil/rockchip lithium anomalism and pathfinder element associations (Cs-Ta-W-Sn-Rb) at a number of prospects.
“Combined with mapping data, Core has prioritised the targets.
“The most notable are Ringing Rocks, Jump Up and the newly discovered Tesla prospects.”