Kavango Resources plc has identified a strong gravity anomaly over the 11km diameter Great Red Spot (GRS) at the company’s copper-nickel-PGM Kalahari Suture Zone (KSZ) project, Botswana.
GRAVITY SURVEY
In December 2021, Kavango conducted a gravity survey over the GRS in Target Area B, covering boreholes KSZDD001 (1,000m) and KSZDD002 (currently 390m).
The company acquired seven 13km lines of gravity data including five North-South lines at 800m spacing and two East-West tie lines at 2,000m spacing.
Kavango is now preparing an audio-magnetotelluric (AMT) survey over the GRS magnetic anomaly to refine the company’s understanding of the target.
GRAVITY ANOMALY
The company said that gravity anomalies were due to density contrasts in rock units relative to the background geology.
A strong gravity anomaly can indicate the presence of an intrusion, alteration and mineralisation.
POTENTIAL
Chief executive Ben Turney said it was too early to start drawing definitive conclusions but the company wanted to determine whether the GRS could host stacked mineralised systems.
“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.
“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.”