Havilah Resources Ltd (Havilah) has reported that a detailed, high resolution, airborne electromagnetic (AEM) survey is planned to commence in mid-April.
The AEM survey forms part of Havilah’s strategy to explore for additional copper-cobalt resources in the Mutooroo Copper-Cobalt District. This type of detailed AEM survey has never been flown over Havilah’s priority targets in the vicinity of the Mutooroo deposit and should be highly effective in identifying Mutooroo style massive sulphide mineralisation, based on previous orientation EM surveys. The survey will be flown by UTS Geophysics utilising the VTEM TM Max Time Domain EM system. Approximately 1344 line km will be flown on 200 m spaced lines using 1250/3050 line orientation to provide the best coverage of the interpreted north-northeast trending stratigraphy.
It will cover an area of approximately 266 km2 and take at least three weeks to complete. Final data, maps and report are expected two to three months after programme completion. This type of AEM survey has proven to be very effective in detecting massive sulphide mineralisation at depths in excess of 200 m (link to VTEM TM Max case study on the Caber massive sulfide deposit). The absence of thick conductive overburden and the shallow depth of oxidation (massive sulfides at approximately 30 - 40 m depth at Mutooroo and Scorpion) within the Mutooroo area should aid in its effectiveness. Compilation of previous airborne EM surveys has highlighted a large gap in the detailed coverage which this survey will fill.
The AEM programme is planned to cover:
- Strong copper ± cobalt surface geochemical anomalies identified by Havilah in 2018 including at Sidewinder, Mutooroo South and Copperhead.
- The existing massive sulfide drill target at Scorpion and extensions along the Scorpion Trend magnetic anomalies.
- The King Brown prospect where previous drilling intersected anomalous near surface copper mineralisation.
- Areas under shallow cover (not suitable for surface sampling) and areas where surface sampling has not been completed.
Several survey lines will cross the Mutooroo sulfide lode system which should provide strong conductive responses against which to benchmark other conductive responses from this survey. Follow-up exploration activities are likely to include ground EM surveying and drill testing of selected targets.
Commenting on the planned EM survey, Havilah’s Technical Director, Dr Chris Giles said: “The planned VTEM TM Max survey will fill a key strategic gap in the detailed airborne EM coverage in the area and will cover the majority of our current high priority geochemical targets within 10 km of the Mutooroo Resource."
“It is the next logical step in investigating the massive sulfide potential of the Mutooroo Copper-Cobalt District in the vicinity of the Mutooroo deposit.”
“The definition of additional copper-cobalt sulfide resources in the area is a key element in advancing the new strategy of a longer mine life with higher throughput at Mutooroo,” he said.
Read the article online at: https://www.globalminingreview.com/exploration-development/19032019/havilah-resources-to-conduct-an-em-survey-in-april/