Bethanga Porphyry Copper-Gold Project

The 194km2 Bethanga Porphyry Copper-Gold Project is targeting a large-scale Porphyry Copper-Gold System.
The Project is located 300km NE of Melbourne in Australia’s premier Porphyry Copper-Gold geological terrain.

Regional and Local Geology

Nexus announced in January 2022 that it had completed the purchase of the Bethanga Porphyry Copper-Gold Project in northeast Victoria. Land holding covers 194km2 across two granted exploration licenses located in Australia’s premier Porphyry Copper-Gold geological terrain. 

The Bethanga project is located in the same geological host as the world class Cadia-Ridgeway and Northparkes Porphyry Copper-Gold projects further north in NSW. The project area is recognized by Geological Survey of Victoria as a region prospective for Porphyry Copper-Gold and VHMS mineralisation. 

Bethanga has historically been mined for copper and gold at the turn of the century (118kOz Au at 39g/t and 618t Cu) and there has seen no exploration activity since 1987. Nexus has been undertaking a Porphyry Cu-Au fertility assessment study at the Bethanga project throughout the year.

Figure 1: Bethanga Porphyry Copper-Gold Project, Victoria
Figure 2: Bethanga Porphyry Copper-Gold Project, Victoria
Figure 3: Bethanga Porphyry Copper-Gold Project, Victoria
Figure 4: Bethanga Porphyry Copper-Gold Project, Victoria

Project Details

  • The project site is located 300km northeast of Melbourne and 30km east of the major regional centre of Albury Wadonga.
  • Combined area of the two tenements is 194km2 (EL006920 141km2 / EL06517 53km2).
  • The project areas were mined at the turn of the century and produced 118kOz Au at 39g/t and 618t Cu from selectively mined narrow north-northeast trending quartz reefs developed within shear zones. The quartz veins are <1m wide and were mined down to 30-40m depth.
Photo 1: Bethanga Porphyry Copper - Gold project historical workings and exposed gossan

Nexus Work Program

Porphyry Cu-Au Fertility Assessment Proposed Works:

  • Prospect wide soil sampling program planning completed. Program aiming to identify pathfinder elements indicative of a magmatic hydrothermal system at depth.
  • Geological mapping and lithogeochemical sampling – with specific alteration and geochemical characteristics being sought to indicate Porphyry Cu-Au prospectivity.
  • Reprocess and 3D inversion of regional aeromagnetic data, followed by detailed ground magnetics survey.

Bethanga Exploration Update

The porphyry fertility assessment work completed to date includes:

  • Regional soil sampling program
  • Regional geological mapping and litho-geochemical sampling
  • Re-processing and 3D inversion of regional aeromagnetic data
  • Detailed soil sampling program

Work to be completed includes:

  • Detailed geological mapping and litho-geochemical sampling
  • Ground magnetic survey
  • Interpretation of combined datasets