What makes the Sandstone Hub significant for Brightstar?

The Sandstone Hub hosts high-grade gold deposits at Bull Oak and Havilah and offers potential for resource expansion through ongoing drilling.

How is the company advancing its exploration?

Brightstar employs a multi-rig approach, combining RC and diamond drilling, geotechnical studies, and metallurgical sampling to increase resource confidence and support PFS work.

What is the focus of the Pre-Feasibility Study?

The PFS aims to assess the economic viability of the Sandstone Hub, incorporating drilling data, geotechnical insights, and mine design considerations.

Brightstar (ASX:BTR) Expands High-Grade Gold at Bull Oak and Havilah

3 min read | December 09, 2025 01:06 PM AEDT | By Sam

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Brightstar (ASX:BTR) Expands High-Grade Gold at Bull Oak and Havilah — Image source: Shutterstock

Introduction to Sandstone Hub Expansion

Brightstar Resources (ASX:BTR) has recently released significant findings from reverse circulation (RC) drilling at its Sandstone Hub, which includes the Bull Oak and Havilah deposits. These results provide a clearer understanding of the mineralisation potential beneath and around the current resource base. Following the acquisition of Aurumin Ltd, the Sandstone Hub now hosts a 2.4Moz gold Mineral Resource Estimate (MRE) at 1.5g/t. The latest drilling focuses on testing below existing resources and exploring extensions to the known ore bodies.

Active Drilling Programs at Sandstone Hub

Six rigs are currently in operation across Brightstar's portfolio, including two RC rigs and two diamond rigs at Sandstone. This multi-rig approach supports various programs such as growth drilling, infill drilling to enhance resource confidence, and geotechnical and metallurgical sampling for the ongoing Pre-Feasibility Study (PFS). The comprehensive drilling strategy is expected to uncover additional high-grade zones and improve understanding of the overall geology.

Bull Oak Deposit: High-Grade Mineralisation

The Bull Oak deposit is showing extensive mineralisation hosted by multiple high-grade quartz veins within broader lower-grade granodiorite. The strike length and width of the granodiorite remain open at depth, making it a potential high-tonnage deposit comparable to the Two Mile Hill-Shillington complex acquired from Aurumin, located nearby. Several felsic intrusives in the Bull Oak camp remain underexplored, suggesting further opportunities for growth.

Standout drill intersections at Bull Oak confirm the presence of thick, high-grade mineralised zones. The results highlight the potential for material growth of the current MRE and reinforce the strategic importance of continued exploration efforts.

Havilah Deposit: Extending High-Grade Zones

Drilling at Havilah has also confirmed the presence of high-grade gold zones. The results point to deeper structures that remain open, making them a priority for follow-up exploration. Continued drilling will likely enhance the overall resource profile of the Sandstone Hub and contribute valuable data for the Pre-Feasibility Study.

Strategic Goals and Resource Growth

Brightstar's multi-rig program supports several strategic objectives:

Extending mineralisation at Bull Oak and Havilah
Upgrading resource classification through infill drilling
Collecting geotechnical and metallurgical data to support mine design
Preparing for development studies as part of the PFS

The ongoing efforts at Sandstone Hub illustrate the company's focus on growing its resource base and advancing towards commercial production. The results provide confidence that the hub can deliver additional high-grade gold deposits, strengthening its position among ASX mining stocks.

Market Implications and Opportunities

Brightstar's results are expected to attract attention within the ASX stock market as exploration success often drives investor interest. With robust drilling results and high-grade intersections, the Sandstone Hub positions Brightstar alongside other leading names in the ASX200 and ASX300 sectors. Continued expansion of high-grade resources could also create opportunities for companies focused on ASX dividend stocks.

The recent RC drilling at Bull Oak and Havilah underscores Brightstar Resources' (ASX:BTR) commitment to exploring and expanding high-grade gold mineralisation at Sandstone Hub. Multi-rig programs and ongoing Pre-Feasibility Study work enhance confidence in the project's growth prospects, positioning Brightstar as a notable player among ASX mining stocks.

Frequently Asked Questions

What makes the Sandstone Hub significant for Brightstar?

The Sandstone Hub hosts high-grade gold deposits at Bull Oak and Havilah and offers potential for resource expansion through ongoing drilling.
How is the company advancing its exploration?

Brightstar employs a multi-rig approach, combining RC and diamond drilling, geotechnical studies, and metallurgical sampling to increase resource confidence and support PFS work.
What is the focus of the Pre-Feasibility Study?

The PFS aims to assess the economic viability of the Sandstone Hub, incorporating drilling data, geotechnical insights, and mine design considerations.

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