Nundle Antimony-Gold
The Nundle Antimony-Gold Project, located in the New England Orogen of northern New South Wales, is a strategic addition to Trigg Minerals’ critical minerals portfolio.
The project spans parts of the historic Nundle Goldfield and the adjoining North Nundle Application area, covering 40 km of the mineralised Peel Fault corridor. This acquisition positions Trigg to explore and advance high-grade antimony and gold targets in a historically productive, yet underexplored region.
Historical Significance
The Nundle Goldfield has a storied history dating back to the mid-19th century, with alluvial gold discovered in 1849 and lode gold in 1852. The field was actively worked until the 1940s, with estimated production exceeding 150,000 ounces of gold. Notably, the area also hosts several historical antimony mines, including Stanning’s Mine, which produced over 8.5 tonnes of antimony. Rock chip samples from the region have returned exceptionally high grades, including up to 61% Sb (Woodley’s Mine) and 304 g/t Au, underscoring the area’s high-grade mineralisation potential.
Geological Setting
The project area is situated along the Peel Fault, a regional-scale structural corridor hosting significant gold and antimony mineralisation. The Nundle Goldfield is characterised by epizonal orogenic gold-antimony mineralisation, with quartz-sulphide veining and shear-hosted deposits. The adjacent North Nundle Application area targets antimony and gold mineralisation within a structurally favourable setting, extending the prospective strike along the Peel Fault to approximately 40 km.
The principal mineralisation styles associated with the Peel Fault and its immediate surrounds include:
- Orogenic Gold-Antimony Deposits
- Intrusion-Related Gold Systems (IRGS)
- Vein and Breccia-Hosted Antimony Deposits
- Polymetallic Shear-Hosted Deposits
- Skarn and Greisen-Type Mineralisation
The Peel Fault acts as a fluid conduit and structural trap, making it a highly prospective corridor for structurally-controlled mineralisation, especially for antimony and gold.
Exploration Potential
Despite its rich mining history, the Nundle region remains underexplored with modern techniques. Trigg’s tenure along this belt positions it well to explore multiple deposit styles within a well-endowed yet underexplored metallogenic province. Trigg Minerals plans to implement a systematic exploration program, including geological mapping, geophysical surveys, and geochemical sampling, to delineate new zones of mineralisation. The company’s approach aims to unlock the full potential of the Nundle Antimony-Gold Project by leveraging historical data and applying contemporary exploration methodologies.