Cornwall Resources Ltd announced it aimed start work in early April on a trenching and auger exploration programme to investigate extensions of tin and copper mineralisation at Redmoor, Cornwall.
TARGETS
The subsidiary of Australian company Strategic Minerals, hopes to extend its programme up to 1,000 metres to the west of its current resource.
It has already identified three priority targets, primarily for tin and copper, for follow-up.
Cornwall Resources said that multiple prospective targets for tin and copper have been identified from a review of historic exploration data.
ANOMALIES
Historic drill intercepts have reported up to 1.26% tin over 2.55m in core, and 0.23% tin in percussion samples.
Significant soil anomalies feature values of up to 1,500 ppm tin and 630 ppm copper, and have a similar trend to known mineralisation further east.
Cornwall Resources plans to conduct a low-cost combined trench and powered-auger sampling programme to assess the potential of the anomalies as targets for future reconnaissance drilling.
TUNGSTEN
The company previously reported successful findings on the main sheeted vein system (SVS) resource.
| Hole ID | From (m) | To (m) | Interval Length (m)* | Cu (%) | Sn (%) | W (%) | WO3 (%) | Sn Eq (%) |
| CRD029 | 366.51 | 367.51 | 1.00 | 0.10 | 5.13 | 0.01 | 0.01 | 5.19 |
| CRD018 | 358.17 | 359.17 | 1.00 | 10.73 | 0.2 | 2.72 | 2.72 | 8.37 |
| Hole ID | From (m) | To (m) | Interval Length (m)* | Cu (%) | Sn (%) | W (%) | WO3 (%) | Sn Eq (%) |
| RM79_01 | 40.10 | 41.90 | 1.80 | 0.35 | 1.40 | 0.01 | 0.01 | 1.56 |
| RM79_01 | 41.90 | 42.65 | 0.75 | 0.30 | 0.90 | 0.02 | 0.03 | 1.06 |
| Interval | 40.10 | 42.65 | 2.55 | 0.34 | 1.25 | 0.01 | 0.01 | 1.41 |
Tungsten is known to be a key component of the SVS, but the peak single-assay result for tin was 1m @ 5.13% (in CRD029 from 366.51m); and for copper was 1m @ 10.72% (in CRD018 from 358.17m).
The results highlight the capacity of the system to host “intense mineralisation” in tin and copper.
WESTERN TREND
Cornwall Resources said that the SVS showed a particular trend of increasing tin in the western parts of the resource which will be investigated.
Work is planned to start in early April 2021 for some three months, leading up to the expected start of Deep Digital Cornwall in the summer.
Strategic Minerals executive director and Cornwall Resources director Peter Wale said that Redmoor was a world-class undeveloped deposit (JORC 2012) with inferred resource of 11.7Mt @ 1.17% Sn Eq understood to remain open at depth and along strike.
“Accordingly, the proposed western trenching and auger exercise represents a cost-effective programme as a first step in assessing the wider potential for tin and copper at Redmoor.”