Cazaly Resources (ASX:CAZ) reports it has advanced exploration at its Ashburton Copper-Gold Project, located in the Pilbara region of Western Australia.
An airborne electromagnetic (AEM) survey was completed across 3 blocks in early August for a total of 305km at 400m or 200m line spacing.
The company reports final results are still pending, and preliminary results have been received and interpreted.
Survey Block 1 tested an area along the Nanjilgardy Fault with anomalous historical surface geochemistry.
The Nanjilgardy fault is a major regional scale structure marking the boundary between the Capricorn Orogen and the Pilbara Craton, and the structure is associated with significant deposits including Black Cat’s (ASX:BC8) Paulsens Gold Mine, and Kalamazoo’s (ASX:KZR) Mount Olympus Gold Mine.
Survey Blocks 2 and 3 were designed to refine broad TEMPEST AEM anomalies identified in publicly available government survey data.
Block 2 is also coincident with anomalous gold results at the New Finish Prospect.
Interpretation of preliminary data was completed by Southern Geoscience Consultants, and they found 200m line spacing in Block 1 shows subtle anomalous conductive trends with west-northwest orientations.
The company reports this orientation coincides with the strike of lithology, and several ‘higher’ amplitude anomalies occur on the eastern block margin.
In Block 2, 400m to 200m line spacing showed a ‘very strong’ conductive folded sequence evident in the southeastern corner of the block. A separate conductive response coincides with the margin of the New Finish project.
In Block 3, 400m to 200m line spacing demonstrated a ‘very strong’ conductive response shown along the northeastern margin of the block, and the company reports this is likely to be a stratigraphic response.
Cazaly notes a number of ‘discrete’ moderate strength anomalies occur immediately southwest of the stratigraphic response.
Final survey data is expected by Cazaly in 4 weeks, which the company says will enable a more thorough interpretation, and a detailed assessment of the discrete anomalies identified in the preliminary dataset.
Cazaly also reports analytical results have been returned for 509 fine fraction (-75µm) stream sediment samples that were collected during July to August 2022 across E38/3262, E38/3265 and E38/3261.
Elevated Gold and Carlin Score values coincide with the previously identified mineralised trends and elevated copper assays highlight 2 new target areas.
The northern anomaly at Cairn Hill Bore extends for 10km strike and is coincident with the Nanjilgardy Fault Zone.
The southern anomaly at Seven Mile Bend extends the southern base metal trend from Ram Hole Creek to the southeast into tenement E08/3262.
This work concludes the first pass reconnaissance surface geochemical sampling program that commenced in the December quarter of 2021 with the collection of 1,211 surface samples.
The final surface geochemical dataset of 1,720 fine fraction surface samples provided Cazaly with the first regional scale geochemical database across the entire tenement package, which will be used in conjunction with geophysics across the 2,450km-square project area to prioritise areas for further work.
Assay results received in the March quarter of 2022 highlighted 2 anomalous gold-copper mineralised trends extending over 50km in the northern project area, and strong base metal signatures highlighting the ‘prospectivity’ of regional scale structures in the southern project area.
The work to date has identified 5 new copper ± gold prospects over a ‘significant’ strike lengths including 10km at New Finish, 3km at Ram Hole Creek, 7km at Warden Pool, 5km at Seven Mile Bend and 10km at Cairn Hill Well located along the Nanjilgardy fault zone.
Cazaly Resources Managing Director Tara French said while the company waits for final drill assay results for Vanrock and Cazaly’s Halls Creek Copper Project, it is pleased to be progressing exploration activities across Ashburton.
“This geochemical sampling completes our comprehensive early-stage surface geochemical program.
“This dataset, used in conjunction with all available geophysical data and will aid in vectoring towards discrete targets within the Ashburton tenement package”
This dataset, used in conjunction with all available geophysical data and will aid in vectoring towards discrete targets within the Ashburton tenement package.
Once the final EM results are received and interpreted, we will be able to utilise all datasets to rank and prioritise areas for further work.”
Cazaly Resources is an Australian-based diversified mineral exploration and resource development company.
Its portfolio of mineral projects including the Ashburton Project, the Halls Creek Copper Project, the Vanrock Polymetallic Project, the Yabby Gold Project, the McKenzie Springs Nickel-Graphite Project, the Mt Venn Gold Project and the Kaoko Cobalt Project in Namibia.
Images: Cazaly Resources Limited