C29 Metals Limited (ASX: C29) has received the results from the Induced Polarisation (IP) geophysical survey at its 100% owned Sampson’s Tank copper exploration project in New South Wales. The IP survey has identified multiple chargeable and resistive targets within two main zones.
The IP Survey was completed by highly experienced Australian Geophysical Services and consisted of 39.5 line kilometres of 100m spaced dipole-dipole induced polarisation across two large targets identified by the interpretation of the 2022 airborne VTEM survey and detailed soil geochemistry and gravity survey analysis, as discussed in the announcement on the 16th of March, 2023.
Seven traverse lines of Induced Polarisation were collected in a North-south orientation spaced 300m apart using a 2D 100m Dipole – Dipole configuration. The data was then 3D modelled using the Zonge 2D smooth model inversion and UBC 3D inversion methods by our consultant geophysicist David McGuiness.
The chargeability models for the two inversion models are very similar. This strong correlation of the models gives high confidence in the resultant models, indicating they are a good representation of the subsurface chargeable material distribution. The models define two strong chargeable complexes: one in the north of the survey area, the other in the south-west of the survey area.
The two resistivity models indicate that the area may be structurally complex with cross- cutting north-easterly and north-westerly structures controlling the distribution of the chargeability complexes.
The northern chargeable complex is dominated by a linear chargeable body that is juxtaposed and parallel to the modelled magnetic body, previously modelled by our geophysicist. The linear chargeability body is strike limited, kinks to the south and sits within a minor break in the elevated resistivity body that dominates the area.
Other low amplitude chargeable bodies sit to the north of the modelled magnetic body and are also be considered as target areas.
The south-western chargeable complex envelops the western margin of the elevated resistivity zone, which in the Zonge model develops a low resistivity body at depth, possibly caused by alteration. It is displaced to the south from the modelled magnetic body and appears to be controlled by an NNW/NW-orientated structure.
Using the high chargeability and resistivity targets in conjunction with the 3D inverted magnetics data, the airborne VTEM anomalies and the soil geochemistry anomalies, multiple high-priority drilling targets have been identified.
The company’s technical team will now review this data in detail and design a drilling plan to test the most compelling targets and unlock the mineralisation story indicated by the IP, magnetics, VTEM, geochemistry and current geological knowledge.