Globally Significant Zinc-Lead Sulphide Deposit

The flagship Earaheedy project is located  110km north of Wiluna, Western Australian in the Earaheedy Basin. Rumble owns 75% of E69/3464 and Zenith Minerals Ltd (ASX: ZNC) owns 25%. Rumble also has two contiguous exploration licenses, ELA69/3787 and ELA69/3862 that is held 100%.

Maiden Sulphide, pit constrained; Inferred Mineral Resource Estimate (MRE):

      94Mt @ 3.1% Zn+Pb and 4.1g/t Ag (at a 2% Zn+Pb cutoff) for

      2.2Mt Zinc, 0.7Mt Lead and 12.6Moz Silver of contained metal

  • Large scale, low-cost open pit mining proposition in premier mining jurisdiction of Western Australia
  • Represents one of the largest zinc sulphide discoveries globally over the last decade
  • Highly leveraged to the global renewable energy transition

Exceptional resource growth and Tier 1 scale potential

  • Deposits remain open with less than 35% of the 45km Unconformity Unit effectively drill tested
  • High grade MVT deposit targets in fertile underlying carbonate formations untested
  • Significant potential to increase to Super Giant category (>300Mt)

Excellent metallurgical results

  • High recoveries and marketable concentrate grades support a potential simple low Capex and Opex flowsheet

Project Optionality

  • The Pit Constrained MRE hosts a 41Mt higher-grade component >3% Zn+Pb cut-off and a very large 462Mt component > 0.5% Zn+Pb cut-off that could be upgraded through beneficiation

Image 1 – Provincial Scale Discovery Potential

Table 1 – Maiden Inferred Mineral Resource Tabulation for the Earaheedy Project

Chinook Zn-Pb-Ag Deposit

  • 8km x 2km Navajoh unconformity Zn-Pb mineralisation (host to Zn-Pb Pit Constrained Resources) remains open along strike and down dip
  • Chikamin and Kalitan high-grade feeder structures (>5% >8%)  Zn-Pb remain open
  • Potential to discover high-grade MVT and fault related resources  beneath inferred resource area in underlying carbonate formations (evidenced by 6m @ 10.51% Zn+Pb & 8m @ 14.61% Zn+Pb in interpreted feeder zone)
  • Large scale open pit Proposition
  • Strong grade continuity
  • Zinc sulphide dominant (approximately 3:1 Zn:Pb)
  • High metal content per vertical metre

Image 2 – Chinook Deposit 

Image 3 – Chinook Deposit Optimised Pits

Tonka & Navajoh Deposits

  • 11km x 2km Navajoh unconformity Zn-Pb mineralisation (host to Zn-Pb Pit Constrained Resources) remains open along strike and down dip
  • Colorado, Magazine and Navajoh high-grade feeder faults (>5% >8%)  Zn-Pb remain open
  • Mineralisation intersected in broad spaced drilling outside of inferred resource areas highlights the potential for new resource discoveries
  • Potential to discover high-grade MVT and fault related resources  beneath inferred resource area in underlying carbonate formations (evidenced by 3m @ 19.93% Zn+Pb & 5m @ 14.14% Zn+Pb in interpreted feeder zone)
  • Zinc sulphide dominant  (up to 10:1 Zn:Pb)
  • Large scale open pit Proposition
  • Strong grade continuity
  • High metal content per vertical metre

Image 4 – Tonka & Navajoh Deposits

Image 5 – Tonka Deposit Optimised Pits

Image 6 – Flat Lying, Feed Faults with Open potential

New Geological Model – 5 Target Zones

The overall geological deposition model for the Earaheedy Base Metal Province is continually evolving with some five (5) styles of mineralisation identified.

Rumble has confirmed at least four (4) of these styles have been defined within the Earaheedy Project and based on recent drilling completed by Strickland Metals (refer ASX: STK announcement – 14/10/2021), the likelihood of significant Iroquois Dolomite hosted mineralisation below Chinook, Tonka-Navajoh and near surface along the Iroquois Carbonate Trend is very high.

The current drilling has outlined laterally extensive flat lying unconformity related zinc-lead-silver sulphide mineralisation at the Chinook, Tonka-Navajoh Prospects (mineralisation styles 1 and 2 ).

Image 7 – Earaheedy Project Geological Model and Target Zones

Earaheedy a Globally Significant Zinc Sulphide Deposit

Image 8 – Sedimentary Deposits form Giant and Super Giant Deposits