KEYPOINTS:
- Drilling to commence next week at TSC’s 100%-owned Rover Project
- Approximately 31 RC holes are intended to be drilled as part of a 2,000m programme focussed on the highly prospective Blue Hills, Four Corners, Harmonic and Creasy 1 Prospects
- Drilling will test below and along strike of the Harmonic and Creasy 1 Prospects, as well as test recent gold-in-soil results where a 1.15g/t Au (1150ppb) sample was returned1
- New geochemical anomalies at Blue Hills and Four Corners have never been drill tested, representing a strong opportunity for greenfield discoveries
- Concurrently with drilling, a ~300 sample geochemical program will be undertaken seeking to further extend gold-in-soil anomalism along the Edale Shear Zone towards the north of the current geochemical sampling
Commenting on the commencement of drilling at Rover, CEO Simon Phillips said:
“We are delighted to be commencing drilling at our Rover Gold Project, with the program set to test several of the largest and highest magnitude gold-in-soil anomalies defined to date at Rover. We will also be testing along strike from encouraging results at Harmonic and Creasy which will give us a better understanding of the potential scale of this mineralised system.
Rover is in a highly sought-after exploration address and gives TSC a large strategic footprint in the Central Yilgarn prospective for Archean gold deposits. Previous work has already defined significant gold system from surface at the Harmonic and Creasy 1 Prospects, so we are eager to get this next phase of exploration underway.
Work is also continuing within our NSW portfolio and with activity continuing to increase throughout the coming months we look forward to providing further updates on exploration progress in due course.”
Twenty Seven Co. Limited (ASX: TSC) (“TSC” or “the Company”) is pleased to announce that TSC’s field crew has mobilised to site and local drilling contractor, Cashmere Drilling, will commence drilling shortly at TSC’s Rover Gold Project, located approximately 55km SE of Sandstone.
As part of the planned program, ~31 Reverse Circulation (“RC”) holes will be drilled, with 25 inclined holes to test bedrock geochemical signatures identified from the most recent gold-in-soil sampling and six holes to extend mineralisation previously identified at Harmonic and Creasy 1.
Figure 1: Map of the Rover project showing the location of the Harmonic and Creasy 1 prospects
as well as the most recent soil sampling locations
Rover Drilling Program Summary
The RC drilling campaign will comprise two programs, the first of which is designed to follow up on previous reported significant results identified at Harmonic and Creasy. Drilling will test along strike and down dip of existing intersections, to complement intersections identified by TSC in 2019 and 20202 including:
- 10m @ 1.84g/t Au from 44m incl 1m @ 9.17g/t Au from 46m;
- 13m @ 1.20g/t Au from 58m (20RVRC020) including 1m @ 11.80g/t Au from 59m;
- 15m @ 1.00g/t Au from 6m incl 3m @ 4.39g/t Au in 20RVRC057
- 17m @ 0.98g/t Au from 0m incl 1m @ 3.74g/t Au from 1m in 20RVRC054
- 14m @ 0.93g/t Au from 19m incl 2m @ 33g/t Au and 21.20g/t Ag from 26m, in 19RVRC008
- 10m @ 1.00g/t Au from 71m and 4m @ 1.48g/t Au from 75m in 20RVRC023
The second RC drilling program will focus on anomalies identified from the most recent geochemical sampling program, which are the largest and highest magnitude gold-in-soil anomalies defined to date at the Rover Project, eclipsing the soil anomalies associated with the Creasy 1 and Harmonic gold discoveries located only 10km to the south3 (Figure 4).
Approximately 25 reconnaissance holes will be drilled within the Blue Hills and Four Corners Prospects to identify any mineralisation existing on the boundary of quartzites and mafic units that are within the Edale Shear Zone.
Geochemistry
The previous geochemical sampling undertaken by TSC has proven highly successful in defining gold anomalism on the Rover Gold Project. In November 2020, the Company completed a detailed soil sampling program towards the southern end of E57/1134, with sampling focused on outcropping and shallowly covered lithologies of the Maynard Hills Greenstone Belt and by extension the Edale Shear Zone. The survey area covered a 9km long x 1km wide corridor over the greenstones. Samples were collected on 50m centres on mostly 100m spaced east-west lines, with a total of 1091 samples collected. The southern limit of the sampled area is 10km to the NNW of, and along geological strike from, the Harmonic and Creasy 1 deposits.
Geochemical results have confirmed several highly significant geochemical anomalies with an anomaly threshold of 3ppb gold. Three main anomalies have emerged, each coincidental with greenstones of the Maynard Hills Greenstone Belt. From south to north the three new targets include:
- Blue Hills – 1 coherent 1.2km long gold anomaly supported by associated As and Cu pathfinder metals. Blue Hills includes one sample which assayed a remarkable 1150ppb Au (1.15g/t Au), with peak pathfinder metal values of 122ppm As and 85ppm Cu.
- Four Corners – a very extensive and unbroken 4.7km long anomaly peaking at 60.5ppb Au and with numerous samples assaying over 10ppb Au. Associated pathfinder metals include As to 182ppb and Cu to 105ppm.
- Middle Well – a cluster of four anomalies extending over 1.2km of strike with the individual features having peak values of 42.9ppb Au, 32ppb Au, 11ppb Au and 11ppb Au respectively.
Figure 2: Geochemical heat map showing Au_ppb of the Northern Prospects
Figure 3: Geochemical heat map showing Au_ppb of the Southern Prospects
Figure 4: Comparison between the geochemical sampling over the Harmonic and Creasy 1 Prospects and the geochemical sampling at Blue Hills, Four Corners and Middle Well. As can be seen the Northern Prospects are of a greater strike extent that the Southern Prospects
Current Work Programs / Next Steps
A summary of the current work programs underway across TSC’s portfolio and planned next steps are below:
- Commencement of RC drilling campaign at Rover
- Commencement of geochemical sampling program at Rover
- Plan further drilling once assays have been returned from the lab at Rover
- Undertake IOCG RC drilling within the Midas tenement in NSW
Reference:
- ASX: TSC: 12 January 2021: Outstanding gold soil anomalies identified at Rover
- ASX: TSC: 9 December 2019: Standout shallow, high-grade intersections up to 3m @ 20.1g/t Au t the Rover Project
ASX: TSC: 29 October 2020: Rover’s October 2020 drilling results confirm Harmonic’s strong potential - ASX: TSC: 12 January 2021: Outstanding gold soil anomalies identified at Rover
