Twenty Seven Co Ltd (ASX:TSC) is preparing to get the reverse circulation drill spinning to test compelling volcanic massive sulphide (VMS) targets at Rover Project in WA as part of a strong exploration drive.
A targeted moving loop transient electromagnetic (MLTEM) survey over eight airborne electromagnetic (AEM) anomalies has confirmed very strong bedrock conductors consistent with VMS mineralisation.
Due to the strength of the results, these eight bedrock conductors, which are along the Maynard Hills greenstone belt, have been classified as compelling targets.
Drilling to begin shortly
Pre-approvals have been secured and preparations are underway for RC drill testing of these targets, which will begin shortly.
An RC rig used in previous campaigns remains on-site and is available to recommence drilling.
Survey “exceeds expectations”
CEO Ian Warland said: “Securing pre-approvals to progress TSC’s drilling campaign has proved to be prudent since the MLTEM survey results have exceeded our expectations.
“In short, the conductive responses from all eight AEM anomalies surveyed is not only consistent with VMS-style mineralisation but qualifies them all as outstanding targets.
“We look forward to commencing the next round of drilling at Rover to focus on these targets imminently and to keeping shareholders apprised of developments as they unfold over the next few weeks.”
Rover Project relative to greenstone belt and select peers’ operations.
Two of the bedrock conductors are along strike from Creasy 2, where a recently assayed intercept confirmed a VMS signature.
This returned 24 metres at 1,825ppm zinc from surface with grades up to 3,020ppm zinc in a 3-metre composite sample and another 6 metres at 2,210ppm from 33 metres.
Successful AEM survey
The MLTEM survey was recently completed and followed a successful AEM survey undertaken by TSC in February 2020, which identified 27 anomalies at Rover.
This AEM survey, facilitated by New Resolution Geophysics’ advanced Xcite system, identified 27 anomalies, 25 of which were along a 15-kilometre stretch of the Maynard Hills greenstone belt.
According to TSC’s consultant geophysicist, these anomalies when consolidated actually represent 15 discrete bedrock conductors.
From this selection, eight bedrock conductors were followed up with single-line MLTEM, using a high-power transmitter and three-component B-field sensor.
This approach enables the conductor responses to be accurately 3D modelled.
All eight surveyed lines confirmed the presence of strongly conductive, discrete bedrock conductors that are typically expected from VMS-style mineralisation.
Encouragingly, all conductors are generally shallow, ranging from sub-cropping to 90 metres deep.
If sulphide mineralisation is confirmed by drilling in any of the conductors then further MLTEM surveys for the remaining AEM conductors will be warranted.
The company has completed RC drilling at Creasy 1 and Harmonic VMS with samples at the laboratory and results expected shortly.
Published at Wed, 15 Apr 2020 01:17:00 +0000-Twenty Seven Co set to drill compelling VMS targets at Rover