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Mulgabbie Gold Projects

Mulgabbie North Gold Project

Opportunity for multiple deposits in a defined gold corridor

Mulgabbie North Gold Project covers 10km of greenstone belt geology in one of the richest and most prolific gold-producing belts in Australia.

OzAurum is exploring 8km of strike along the Relief Shear adjacent to Northern Star’s (ASX: NST) Carosue Dam Mine and the adjoining 3.5 Moz NST Karari and Whirling Dervish gold mines.

Previously underexplored with limited drilling despite significant gold endowment in the belt. Gold mineralisation is open at depth and along strike. Mulgabbie North has all the hallmarks indicating potential for a significant gold discovery.

In September 2024, a Mulgabbie North Gold Heap Leach 50:50 Profit Share Agreement was signed. The agreement is with Line Hydrogen Pty Ltd and BIM Metals Pty Ltd (together LHBM) to complete the Mulgabbie North Heap Leach Feasibility Study (Study), which will be fully funded by LHBM.

  • OzAurum’s, Mulgabbie North and Patricia Projects strategically located and in the heart of WA Eastern Goldfields 130 km NE of Kalgoorlie.
  • Projects closely neighbour a number of existing mining operations and gold processing plants in the area – historically producing high grade gold mineralisation.
  • Mulgabbie North Project is strategically located 2km directly adjacent Northern Star’s Carosue Dam Gold Mine (~3.5moz) with similar rocks.
  • Mulgabbie North Gold Project measured, indicated and inferred MRE of 11.6 mt @ 0.70 g/t Au for 260,000 oz’s reported at 0.3 g/t Au cut-off¹. With 64% of MRE in the measured and indicated categories, along with metallurgical testwork provides a solid basis for future scoping study.
  • The Heap Leach Study is expected to take up to 12 months and following completion and, if a decision to commence production is made by the parties, LHBM will operate and be responsible for funding the proposed mining and heap leach operation with net cash after operating costs and capital costs to be split 50-50 between OzAurum and LHBM.

 

¹ ASX Announcement 18 July 2023

Gold Mineralisation Extended at Cross Fault

  • Diamond drilling (220m) confirms dual mineralised zones: Two parallel mineralised horizons intersected- sheeted vein array and breccia-style mineralisation with visible gold observed in quartz veins in MNODH 017.
  • Significant gold intersections from diamond drilling:
    • 25m @ 1.24 g/t Au from 27m – including 1m @ 5.63 g/t Au from 27m and 1m @ 5.83 g/t Au from 43m in DDH MNODH 017
    • 17m @ 1.25 g/t Au from surface in DDH MNODH 017
    • 25m @ 0.76 g/t Au from 47m – including 1m @ 5.50 g/t Au from 50m and 1m @ 3.48 g/t Au (from 69m) in DDH MNODH 018
  • AC drilling extends mineralisation along strike to the south by 600m at Cross Fault: 82 AC holes (2,290m) confirm southern extension of gold mineralisation beyond Cross Fault.
  • Notable shallow AC gold intercepts (four metre composite samples):
    • 4m @ 1.03 g/t Au from 24m – in AC MNOAC 835
    • 4m @ 0.57 g/t Au from surface – in AC MNOAC 843
    • 3m @ 0.33 g/t Au to end of hole (EOH) from 32m – in AC MNOAC 799
    • 3m @ 0.23 g/t Au to EOH from 32m – in AC MNOAC 815
  • New RC targets identified: Latest AC drilling delineates new reverse circulation drilling (RC) targets adjacent to outcropping porphyry and confirms fault offset positions.
  • New Cross Fault discovery extends Project scale: Located 1.3km south of previous drilling, the Cross Fault discovery enhances the overall prospectivity of the 260,000 oz Mulgabbie North Gold Project.
  • Next Steps: High-priority RC and AC drill targets to be tested as geological interpretation progresses.

CEO and Managing Director, Andrew Pumphrey, commented:

“Our latest drilling at Cross Fault has confirmed two distinct styles of gold mineralisation, including a sheeted vein array and breccia-hosted zones. The presence of visible gold within quartz veins- particularly where oxidised pyrite was observed- is a strong validation of our geological model and a highly encouraging development.
Aircore drilling has also delivered promising results, particularly near outcropping porphyry where shallow cover limited penetration. These areas now represent immediate, walk-up targets for follow-up RC drilling.
Together, these results significantly enhance our understanding of the Cross Fault discovery and expand the broader prospectivity of the Mulgabbie North Gold Project. We’re excited to advance to the next phase of exploration, with RC drilling set to test these newly defined, high-priority targets.”

Mulgabbie North Gold Deposit

Mineral Resource Estimate

Mulgabbie North Gold Deposit Mineral Resource Estimate
JORC 2012 Classification Tonnes Grade Au g/t Ounces
Measured (M) 1,475,000 0.82 39,000
Indicated (Ind) 5,620,000 0.71 128,000
Inferred (Inf) 4,543,000 0.85 93,000
Total M+Ind+Inf 11,638,000 0.70 260,000
The Mineral Resources are reported at 0.3 g/t Au cutoff to a depth of 150m below the surface. All numbers are rounded to reflect appropriate levels of confidence. Apparent difference may occur due to rounding. See ASX Announcement dated 18 July 2023 for full JORC and complaince details.
Mulgabbie North Gold Project

Potential to make a significant gold discovery

  • Part of 3.5 million Oz Carosue Dam Gold Camp
  • 8km strike with multiple deposits with 4km yet to be tested in a defined gold corridor
  • Mineralisation open at depth and along strike

Exploration at Mulgabbie

Alluvial Gold Found On-Site at Mulgabbie

MULGABBIE HOTEL

Historical gold production 1898–1940

Gold was first discovered at Mulgabbie Hotel in 1898 and the field produced 8,000oz of gold at an astounding 34oz (or a little more than 1kg) to the tonne.

 

7,777 oz from 227 t Average grade 34 oz/t bonanza grades. Vendor 1990 Underground tribute mining has produced 30 oz at grade 64.8 g/t. 1,000 oz recent alluvial tribute gold production M28/364 Hotel 2011 2013. Dolerite hosted mineralisation and telluride mineralisation.

 

Significant Intersections include:
RCMC 7 | 19m @ 2.46 g/t Au from surface.

RCMC 3 | 11m @ 2.64 g/t Au from 26m.

RCMC 6 | 13m @ 2.16 g/t Au from 45m

OzAurum | Mulgabbie Hotel Project