Butcherbird

The Butcherbird Manganese Deposit is Australia’s largest onshore manganese resource1 comprising large tonnages of near surface manganese oxide ore in seven deposits.

The Project also has some excellent infrastructure advantages with a gas pipeline and main bitumen highway passing directly adjacent to and through the mineralised envelope.

Butcherbird map

The mineralisation occurs as supergene enrichment of a regional scale basal manganese shale which underlies much of the Project area. The shale beds are gently folded and where the folds approach the surface topography, supergene processes have significantly upgraded the manganese content to form a potential feedstock for further upstream processing.

Project Highlights

  • Australia’s largest onshore manganese deposit.
  • >180 Mt of manganese ore*.
  • Excellent local infrastructure.
  • 100% owned by Element 25 Limited.
  • Low risk mining jurisdiction.
  • Mining Lease Application lodged February 2018.
  • Scoping Study completed.
  • Pre-Feasibility Study Commenced.

Mineral Resources

Prospect Tonnes (Mt) Mn (%) SiO2 (%) Fe (%) P2O5 (%) AI2O3 (%)
Yanneri Ridge            
Inferred 48.0 10.7 43.0 11.1 0.262 10.7
Indicated 22.5 12.0 43.8 11.6 0.297 10.6
Additional Deposits            
Inferred 110.3 10.6 44.4 11.9 0.3 11.0
Total 180.8 10.8 43.9 11.7 0.3 10.9
  • Inferred and Indicated Resource Estimates completed for eight deposits.
  • Significant potential remains to increase the resource with further drilling.
  • Scale of development not resource constrained.

Simple Geology

Simple Geology

The geology and hence mining at Butcherbird are exceedingly simple. The ore zone at Yanneri Ridge is at surface, dips shallowly to the north resulting in a very low strip ratio estimated at 0.2:1.

The uniform grade distribution means that the entire ore zone is mined for processing, with no need for grade control or selectivity.

Processing Breakthrough

Process Breakthrough

A new process flowsheet developed in collaboration with CSIRO for the unique Butcherbird ores means that they can be leached into solution at ambient temperature and atmospheric pressure with high level of selectivity and very rapid leach kinetics with approximately 95% of the manganese extracted in around 30 minutes to produce a 90% pure manganese solution.

This liquor is then further purified and then either put through a crystalliser to produce high purity manganese sulphate for use in lithium ion battery cathodes or put through an electrolysis plant to produce electrolytic manganese metal both of which represent high purity high value manganese products.

Butcherbird

1Element 25 ASX release dated 17 October 2017
2Element 25 ASX release dated 27 December 2014
3Element 25 ASX release dated 6 June 2017

The Manganese Project

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