Kavango Resources said it identified a strong gravity anomaly at the Great Red Spot (GSR) target area at its Kalahari Suture Zone (KSZ) project in Botswana.
The junior already identified a large-scale (11km) diameter magnetic anomaly at GRS and the gravity anomaly is coincident with that.
The gravity anomaly is roughly 7km in diameter at its widest along the North-South geophysical lines.
Gravity anomalies are caused by density contrasts in rock units relative to the background geology. In mineral exploration a strong gravity anomaly can indicate the presence of an intrusion, alteration and mineralisation, Kavango explained.
An Audio-Magnetotelluric (AMT) survey will be the next test to be carried out at GRS, said Kavango.
"While it is too early to start drawing definitive conclusions, we are keen to pursue the possibility that the Great Red Spot could host stacked mineralised systems," Ben Turney, Kavango’s chief executive, added.
"Although this is a relatively new geological theory for Kavango, it is interesting that it builds on our existing work.
“The younger, shallower Karoo gabbros over the Great Red Spot remain our primary focus, but we are increasingly aware of the potential for the deeper, much older Proterozoic gabbros to host an entirely separate system.
"Reinterpretation of our existing magnetic model helped send us down this path and it is encouraging that the gravity survey results are coincident with the magnetics.
“Our hope is the AMT survey will provide a third data set, which complements the results from magnetic and gravity surveys.
"Keeping an open mind in minerals exploration is crucial. We did not set out last year to find a new potential mineralizing system in the deeper Proterozoic rocks."