Halls Peak Base Metal Project

Highlights

  • Right geological setting, Halls Peak base metal province located in an area of historic high grade massive sulphide mines

  • Several shallow, high grade, massive sulphide bodies already discovered

  • Major miners consider Halls Peak has potential to host a large base metal deposit

  • VTEM conductor around the old Sunnyside Mine fits a typical SEDEX deposit model.

  • Main conductor setting is analogous to McArthur River Deposit (227Mt ore);

    •Multiple conductors identified during 2021 analysis of previous geophysics data

Halls Peak Exploration Licenses 

  • Two Exploration Licences in north-eastern NSW (EL4474, EL7679) cover all known areas of mineralisation; 132 square kilometres.

  • The area is well known for extremely high grade massive sulphides.

  • EL 4474: Critical Resources holds 100%.

  • EL 7679: Critical Resources holds 55% in JV company.

Prime Exploration Targets

Around Halls Peak (the inferred volcanic centre) the sequence contains three target types derived from two distinct phases of mineralisation:

  • Small to medium (1,000 -100,000 tonnes) sized massive sulphide bodies

  • Large tonnage (100,000 –100mt) massive sulphides.

  • Drill Ready Targets Identified

  • Steeply dipping, deep tapping structurally controlled Cobar-style

  • VTEM anomalies (1,221 line kilometres heliborne survey flown) with potential sulphide responses including large flat lying conductors in relatively undisturbed sedimentary basins, Target – Large Zinc/Lead deposits eg. HYC (MacArthur River)

  • Late stage, orogenic gold mineralisation associated with altered and quartz-veined stockworked volcanics

Halls Peak Heliborne VTEM Survey

  • Results display anomalies consistent with potential massive sulphide deposits

  • Multiple deep conductive zones have been identified

  • Potential for large zinc-lead-copper-silver bearing beds

  • Vertical conductive zones, possibly conduits to vents discharging mineralisation, have also been found

  • Re interpretation of VTEM data in 2021 has provided further targets for exploration at Gibsons and Sunnyside

Classic ‘Textbook’ Sedex-Style Anomaly Faults Control The Anomalies

Figure shows 2012 VTEM Conductors plotted on 1978 NSW Geological Survey structure map. Precisely abuts growth faults, potentially classic feeder structures discharging into grabens. The historic mines along the main western growth fault are copper-rich, a further diagnostic characteristic – vector to discharge structure.

The broad conductive zones could be the response of an economic Zn-Pb-Cu-Ag sulphide body but equally could be response of pyritic carbonaceous (graphitic) black shales with sub-economic sulphides.

“These conductors appears to terminate against the same northeast-southwest structures which are spatially associated with several historical workings. These should be the highest priority for ongoing exploration. Evidence of source migration from early to late time towards these faults may be indicating thickening sulphide closer to the fault. This does not appear to be consistent with typical VMS systems, but may be more aligned to sedimentary exhalative (SEDEX) processes.” Southern Geoscience Consultants Pty. Ltd. 2012.

Classic ‘Textbook’ Sedex-style anomaly faults control the anomalies (shown in pink)

Halls Peak VTEM Conductor Setting is Analogous to McArthur River Deposit

  • The McArthur River SEDEX system is world class deposit.

  • Pre-JORC geological resource of 227M tonnes at 9.2% zinc, 3.1% lead, 0.2% copper and 41 g/t silver.

  • Halls Peak’s anomaly is controlled by faults, similar to McArthur’s SEDEX structural setting.

  • The interpretation concluded “In general the conductive zone is complex and consists of two types of conductors: 1) steeply dipping (or subvertical) conductors and 2) subhorizontal blocky, lens or layer similar conductors. geologically the steeply dipping conductors likely reflect faults which could be channels for solutions transportation (feeding channels)