- RC drilling campaign comprising 31 holes for a total of 2,161m now completed at Rover
- 574 samples will be submitted to the laboratory this week – results from these samples are expected to be returned Q1 2022
- Geology consisted mainly of mafic basalts, dolerites (with some potential ultramafics), granites and banded/silicified iron formations
- Hole 21RVRC022 intersected a 4m (62-66m DH) zone of massive sulphides (pyrite and pyrrhotite) within a 7m zone of disseminated sulphides
- Massive sulphide intersection indicates the potential for Rover to host VHMS targets, particularly given local/regional geology which includes Cobre Limited’s Perrinvale project1 located ~30km to the south
Commenting on the Rover drilling program, CEO Simon Phillips said:
“We are pleased to have completed this drilling program at Rover ahead of the Christmas break, as it allows us to submit our samples to the laboratory this week for processing. We expect to receive first results in around 5-6 weeks’ time and look forward not only to delineating further gold mineralisation but also to the results of assays for Hole 21RVRC022 given its encouraging intersection of a 4 metre-wide zone of massive sulphides. This program was focused on testing bedrock geochemical signatures identified from the most recent gold-in-soil sampling, with the aim of potentially extending known gold mineralisation at the Harmonic and Creasy 1 Prospects.
I would like to thank our drilling partners at Ausdrill, along with TSC’s technical staff, for their effort and hard work to complete this program before Christmas. I look forward to providing further updates on exploration early in the New Year.”
Twenty Seven Co. Limited (ASX: TSC) (“TSC” or “the Company”) is pleased to announce the completion of the latest round of RC drilling at the Company’s 100% owned Rover Gold Project in Western Australia’s Goldfields (see Figure 2).
A total of 31 holes for 2,161m has been completed, with 574 samples to be submitted to the laboratory for multi element and gold analysis. First results are expected in early Q1 2022.
Figure 1: Chip tray from hole 21RVRC022 showing the massive sulphide intersection
Figure 2: Rover Gold Project relative to greenstone belt and selected peer operations
Summary of Rover Gold Project Drilling
The program consisted of 31 RC holes for a total of 2,161m. Six (6) holes were designed to extend the Harmonic Prospect (Harmonic), a priority target, at depth and along strike, and the remaining 25 holes were designed to test the gold-in-soil anomalism identified in November 20202 at Middle Well, Four Corners and Blue Hills. Initial geological observations at Harmonic are in line with expectations, with mafics and quartzites having been intersected in all holes. Geology at the Middle Well, Four Corners and Blue Hills Prospects consisted mainly of mafic basalts/dolerites (with some potential ultramafics), granites and BIFS/SIFS.
Figure 3: Prospect map with 6 around Harmonic and 25 remaining holes at Blue hills, Four corners and Middle Well.
Figure 4: RC drill rig working on hole
Also of note in hole 21RVRC022 was an intersection of 4m (62-66m DH) of massive sulphides (pyrite and pyrrhotite) with minor chert which contained potential exhalative texture, as seen in Fgure 1. Intersection of massive sulphide is of significant base metal interest given that ASX-listed Cobre Limited’s Perrinvale Project (~30km south of the Rover Project) has shown that massive pyrite can be associated with base metal prospectivity. If the massive sulphide assays return any base metal anomalism, then this may indicate that the geology within Rover is fertile with respect to base metals in the form of volcanic-hosted massive sulphides (VHMS) which would require follow up work.
TSC’s planned operational activities for Q1 2022 include:
- Rover Gold Project, WA
- Receipt of RC assays from Rover drilling and detailed review
- Review of additional surface geochemical samples identified from WAMEX and incorporation of data into the Rover database in order to plan further infill geochemical samples if required
- Midas Project, NSW: Drill program implementation
- Perseus Project, NSW: Orientation surveys and soil sampling
- Yarbu Project, WA: Infill auger drilling program, potentially followed by later aircore drilling
- ASX: CBE – New High-Grade Massive Sulphide Copper at Schwabe Prospect (20 July 2020)
- ASX: TSC – Outstanding gold soil anomalies identified at Rover (12 January 2021)