Ongoing exploration at prospective targets within the Earaheedy zinc-lead joint venture in Western Australia has returned high-grade results for partners Zenith Minerals (ASX: ZNC) and Rumble Resources (ASX: RTR).
Infill and extensional drilling at the Chinook, Tonka and Navajoh prospects has extended the overall mineralised footprint of the venture and defined multiple discrete high-grade zones which remain open-ended.
Strong grade continuity at Chinook included intercepts of 20m at 3.63% zinc-lead from 63m; 8m at 3.65% zinc-lead and 8.03g/t silver from 128m; 17m at 2.91% zinc-lead and 2.29g/t silver from 110m; 5m at 4.54% zinc-lead and 4.24g/t silver from 110m; and 5m at 5.53% zinc-lead and 3.56g/t silver from 79m.
The Kalitan discrete high-grade zone returned 20m at 8.78% zinc-lead and 11.7g/t silver, within 51m at 4.76% zinc-lead from 82m; 10m at 6.57% zinc-lead and 16.24g/t silver from 200m, within a broad zone of 84m at 1.84% zinc-lead to end of hole; 13m at 6.94% zinc-lead from 137m, including 6m at 10.51% zinc-lead from 141m; and 6m at 6.57% zinc-lead.
At Chinook’s new Spur zone, drilling returned 6m at 4.13% zinc-lead from 100m, including 2m at 9.09% zinc-lead from 100m; 6m at 4.69% zinc-lead from 109m; and 10m at 4.32% zinc-lead from 107m, including 2m at 12.34% zinc-lead from 107m.
A zone of flat lying zinc-lead-silver mineralisation was also discovered 8km southeast of Chinook during testing of the wider potential of the Tonka prospect.
The mineralisation style is believed to be flat-lying near surface, like at Chinook.
Results included 22m at 4.27% zinc-lead and 5.4g/t silver from 110m; and 10m at 3.93% zinc-lead and 4.34g/t silver from 84m.
Significant high-grade mineralisation was intercepted at the northern end of Tonka in a newly-identified east-west trending zone called Colorado, which comprises multiple open-ended, inferred, mineralised feeder structures with strike lengths up to 2km.
Two initial holes within the Colorado Zone returned highlights of 73m at 3.07% zinc-lead from 106m, including 13m at 5.38% zinc-lead from 108m, 19m at 3.48% zinc-lead from 132m; and 9m at 3.56% zinc-lead from 162m, with 2m at 8.17% zinc-lead from 162m.
Zenith said Tonka is “significantly advancing in size and grade”, having returned some of the widest and highest-grade, zinc-dominant drill intercepts to-date at Earaheedy.
At the Navajoh prospect, 4km southeast of Tonka, a mineralised zone was discovered similar to that at Chinook and Tonka.
Results from drilling at Navajoh in December included 5m at 6.38% zinc-lead and 6.3g/t silver from 123m; 3m at 6.15% zinc-lead and 10.63g/t silver from 132m; and 4m at 4.18% zinc-lead and 3.57g/t silver from 106m.
Located approximately 110km northeast of Wiluna, the Earaheedy project is shared between Zenith (with 25% equity) and Rumble (75%).
It covers 42km of unconformity prospective strike which remains untested and completely open.
Since a major zinc-lead-silver-copper discovery at Chinook in April 2021, scoping and broad-spaced infill drilling has rapidly uncovered an emerging world-class scale base metals system.
Chinook is being fast-tracked with an extensive accelerated exploration program, underpinned by a $40 million capital raising by Rumble.