GBM Finds Broad Gold Zone Ahead of Twin Hills Update
GBM Resources has returned a broad 101-metre gold intersection at 2.63g/t from Lone Sister, with higher-grade intervals pointing to potential local grade uplift at Twin Hills. A further 8,400 metres of assays remain pending before the planned December-quarter resource update.
- 101m at 2.63g/t gold from Lone Sister
- Higher-grade intervals including 9m at 6.55g/t and 4m at 10.35g/t
- 309 drilling confirms in-resource mineralisation and extends beyond the current boundary
- 8,400m of assays remain pending
- Twin Hills resource update planned for the December quarter
Lone Sister Delivers Broad Grade Upside
GBM Resources Limited (ASX:GBM) has produced its most striking result in the latest batch from Twin Hills: drill hole LSDH020 returned 101 metres at 2.63g/t gold from 256 metres at the Lone Sister deposit. The interval includes 9 metres at 6.55g/t from 258 metres and a separate 4-metre section at 10.35g/t from 332 metres.
GBM said a substantial portion of the intersection sits in an area modelled at lower grades in the existing Mineral Resource Estimate, creating potential for local grade uplift when the resource is updated. That remains an interpretation rather than a revised resource figure: the reported lengths are downhole measurements, and true widths are not yet known.
309 Results Reinforce High-Grade Zones
Drilling at the 309 deposit delivered several strong in-resource intersections. TNDH048 returned 12 metres at 5.94g/t gold from 112 metres, including 6 metres at 11.15g/t. TNDH053 added 10 metres at 4.93g/t from 207 metres, including 4 metres at 10.37g/t, followed by 16 metres at 2.23g/t from 241 metres.
The company also reported mineralisation beyond the current 309 resource boundary, including 27 metres at 1.28g/t from 275 metres in TNDH042 and 22 metres at 1.29g/t from 142 metres in TNDH049. These results support the possibility of resource growth, although they do not yet establish how much additional tonnage or gold could ultimately be added.
Stage 2 Drilling Targets Confidence and Growth
The results come from a 50,000-metre Stage 2 drilling program designed to do two jobs at once: improve confidence and continuity within the existing Twin Hills resource, and test extensions beyond its boundaries. Twin Hills currently carries approximately 23.1 million tonnes at 1.3g/t gold for about 1.0 million ounces across Lone Sister and 309.
At 309, GBM’s geological interpretation continues to centre on the Milled Matrix Breccia, described as the principal host to much of the deposit’s gold mineralisation. The company said drilling is helping refine the structure and lateral continuity of that host unit, while at Lone Sister it is addressing areas of limited historical drilling and testing the controls on higher-grade mineralisation.
Pending Assays Set Up December Resource Test
The next major test is still to come. About 8,400 metres of assays remain outstanding, including 6,450 metres from 309 and 1,950 metres from Lone Sister, with GBM expediting samples ahead of a planned Twin Hills resource update in the December quarter.
GBM chief executive Daniel Hastings said the company saw potential for the program to deliver both increased confidence and growth. The resource update will need to convert that drilling momentum into measurable changes in tonnes, grade, ounces or resource classification. Until then, the reported grade uplift and extensions remain prospective rather than formally recognised in the resource base.
Bottom Line?
The drilling has improved the case for a stronger Twin Hills resource, but the December update and the remaining 8,400 metres of assays must determine whether the promise translates into additional ounces.
Questions in the middle?
- How much of the Lone Sister grade uplift will survive resource modelling?
- Will the out-of-resource 309 mineralisation add meaningful tonnes or ounces?
- Can the pending assays support a higher-confidence resource suitable for future project studies?
