Cazaly Resources Limited (ASX: CAZ) has identified Anomalous copper mineralisation over two km strike at its Ashburton Project, located in the Pilbara region of Western Australia. Copper results have been received from rock chip samples collected at the Cheela Plains prospect and initial processing of final electromagnetic (EM) survey data was also completed. The Cheela Plains prospect is located along the Najilgardy fault zone where Cazaly holds the rights to a major land position covering more than 2,450 sq. km in the Ashburton Basin. The project covers major regional structures considered to be prospective for large mineralised systems.
Surface Rock Chip Results
Analytical results have been returned for three rock chip samples collected at the Cheela Plains prospect where Cazaly’s geologists identified copper in outcrop in the form of copper carbonates, visual estimates up to 3% and copper sulphides, visual estimates up to 5%.
Two of the three samples assayed above 10% copper, with the highest assay 32.32% copper.
The mineralised copper trend continues to the south east with anomalous rock chip samples extending the anomaly over two km strike.
Limited historical drilling was conducted to the south-east of the best rock chip results however the drill holes appear to have failed to test the prospective stratigraphy and therefore ineffective at testing the copper potential along this trend.
Airborne Electromagnetic Targets
An Airborne Electromagnetic (AEM) Survey was completed across three blocks in early August 2022 for a total of 305 line kilometres at 400m or 200m line spacing.
Final EM survey results have been received and processing has been completed for the first priority block “Survey Block 1” located at the Cheela Plains prospect along the Nanjilgardy Fault. The Nanjilgardy fault is a major regional scale structure marking the boundary between the Capricorn Orogen and the Pilbara Craton. The structure is associated with significant deposits including Black Cat’s Paulsens gold mine and Kalamazoo’s Mount Olympus gold mine. Final results and report are pending.
Three new EM targets have been identified closely associated with a NW trending Fault, interpreted to be a splay off the Nanjilgardy fault within the broader Nanjilgardy fault zone. This fault may have been an important conduit for the focus of mineralising fluids and is in close proximity to the copper mineralisation and EM targets.
All three EM targets are untested, no historical surface sampling or drilling has been conducted on the targets.
The company has initiated specific modelling of the EM anomalies to determine the size and geometry of any potential conductor targets for further follow-up. It is anticipated that this will be completed in the coming weeks in time for the 2023 field season.
These initial EM targets are extremely encouraging especially with the nearby two km copper trend containing extremely rich copper rock chips,” Managing Director, Tara French, said.
“Once again our exploration results add valuable insights to the mineralisation potential of this very large land package we hold in the Ashburton Basin.
“The two remaining EM survey blocks at the Ashburton Project require modelling, and once all interpretations are complete target ranking will commence in order to prioritise areas for further work.”