The Back Creek Goldfield is located near Pipers River, approximately 45km north of Launceston and 9km east of the Lefroy goldfield in Northeast Tasmania. Gold was first discovered at Back Creek in 1869 and worked up until 1890, with most production from the alluvial leads. Historical reports put gold grades from the hard-rock Franklin Mine on an third-party Mining Lease adjacent to Stellar’s EL12/2020 in a range between approximately 9 – 20 g/t Au (Broadhurst, 1935).
The Leura prospect is located on Stellar’s 100%-owned EL12/2020, 3km southeast of the main Back Creek goldfield. Both alluvial and hard rock occurrences were worked historically at Leura, with hard-rock grades estimated to average 57 g/t Au (Montgomery, 1894).
The combination of the high-grade historic gold mining occurrences, similar structural style to the Lefroy and Beaconsfield gold deposits, and the lack of modern exploration, led to Stellar prioritising gold exploration of the Leura and Back Creek prospects on EL12/2020 as its first field exploration program completed in 2021.
A C-horizon soil survey comprising of 276 samples at Leura and 274 samples at Back Creek was completed within EL12/2020, with the assay results announced in July 2022.
Historically mapped gold mineralisation of the Back Creek goldfield, with soil sample locations
Leura Soil Sampling Results
Soil samples over the historic Leura Goldfield returned very encouraging gold assay results ranging from 0.1 to 2.4 g/t Au over a 400m – 500m strike length, open in both directions with likely extensions under shallow cover (>5m). These strongly anomalous soil gold results confirm the location of the previously described Leura reefs (veins) and extend their strike lengths. The high-grade gold soil results from Leura, combined with the likely strike extensions make this a very attractive drill target.
Gridded gold (ppm) results for soil samples at Leura, with locations of historically mapped reefs, interpreted extensions, and distribution of post-mineralisation cover (note: 1 ppm = 1 g/t)
Back Creek Goldfield Soil Sampling Results
Soil samples over the Lady Emily, Nevermind and Hidden Treasure Reef prospects in the historic Back Creek Goldfield within EL12/2020 returned anomalous gold results including:
- Lady Emily Reef – anomalous gold soil results ranging from 0.02 to 0.16 g/t Au over a ~200m strike length over the historic Lady Emily Mine.
- Nevermind Reefs – anomalous gold soil results ranging from 0.02 to 0.23 g/t Au over ~100m strike length over the northern reef and 0.02 to 0.05 g/t Au over ~50m strike length over the southern reef of the historic Nevermind Mine.
- Hidden Treasure Reef – anomalous gold soil results over a range of 0.02 to 0.05 g/t Au and a potential strike length of >100m also characterise the approximate location of the Hidden Treasure Reef on EL12/2020, although transported cover has obscured the results over this area.
Compared to Leura, the soil gold assay results at Back Creek within EL12/2020 are lower (maximum 0.23 g/t Au), however, the Back Creek soil gold results are still encouraging. The reported east-west trend is clearly reflected in the contoured gold results, which clearly map the distribution and possible strike extensions of the historically mapped reefs (veins), despite the patchy alluvial cover.
Gridded gold (ppm) results for soil samples at Back Creek, showing historically mapped reefs, alluvial leads, and the likely distribution of post-mineralisation(alluvial) cover in grey(note: 1 ppm= 1g/t)