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Australia

McIntosh Project

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Australia

McIntosh Project

Location: 68 km NE from Halls Creek, Western Australia, Australia

Project Contacts:

349 Hay Street
Subiaco
Western Australia, Australia
6008

Contacts:

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Categories

Summary

Mine TypeOpen Pit
Study CompletedPrefeasibility
Commodities
  • Graphite
Mining Method
  • Truck & Shovel / Loader
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SnapshotThe McIntosh Graphite Project contains a number of graphite mineral deposits and exploration targets, including the Emperor, Wahoo, Longtom, Barracuda, Marlin, Threadfin and Mahi-Mahi deposits. The objective of the McIntosh Graphite Project is to develop a facility to treat ore from the Emperor and Wahoo ore resources.

The 2025 Pre-Feasibility Study (PFS) assesses the production of graphite concentrate and micronized graphite from the McIntosh Graphite Project.

Following on from the successful PFS for the McIntosh Graphite Project reported on 30 June 2025, work has continued on the next stages of the Project’s development which includes a review of the environmental and other associated approvals for the Project area as well as further metallurgical text work. This work is expected to continue through 2025 and into 2026.

Owners

SourceSource
CompanyInterestOwnership
NH3 Clean Energy Ltd. 20 % Indirect
GCM Corporation Ltd. 80 % Indirect
GCM Corporation Limited (formerly Green Critical Minerals Limited) holds an 80% interest in the McIntosh Graphite Project.

The McIntosh Graphite Project is being developed by GCM via its earn-in rights from the Binding Terms Sheet (BTS) between GCM and Hexagon Energy Materials Limited (now NH3 Clean Energy, NH3CE). Under the BTS, GCM has achieved its earn in right of 80% interest in the Graphite Mineral Rights only across NH3CE’s McIntosh Project tenements. The exploration tenements will remain wholly held/managed by NH3CE.

The BTS allows for the parties to enter into an unincorporated Earn-In and Joint Venture Agreement (EIJVA), which includes terms for the party with the majority rights to be the EIJVA Manager and for the mining permit to be held by the EIJVA.

Contractors

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SourceSource

Deposit type

  • Metamorphic

Summary:

The McIntosh Graphite Project contains a number of graphite mineral deposits and exploration targets, including the Emperor, Wahoo, Longtom, Barracuda, Marlin, Threadfin and Mahi-Mahi deposits. The objective of the McIntosh Graphite Project is to develop a facility to treat ore from the Emperor and Wahoo ore resources.

The graphite mineralisation occurs as graphitic schist horizons within the high-grade metamorphic terrain of the Halls Creek Mobile Zone of Western Australia. The host stratigraphy is the Tickalara Metamorphics which extend for approximately 130 km along the western side of the major Halls Creek Fault. The metamorphic rocks reach granulite metamorphic facies under conditions of hightemperature and high pressure although the metamorphic grade in the McIntosh Graphite Project area appears to be largely upper amphibolite facies. The stratigraphy is variably folded generally around NNW to NNE trending fold-axes.

The mineralisation has been described as a series of stacked graphitic schist horizons hosted within amphibolite facies that have been deformed into an anticlinal structure.

Deposit Geology - Emperor
Graphite at the Emperor deposit is hosted within a graphitic schist unit within a strongly metamorphosed metasedimentary sequence. Flake graphite mineralisation is associated with a regional scale fold hinge (anticline). The deposit area has subsequently had several mafic intrusions.

Deposit Geology - Wahoo
Graphite mineralisation at Wahoo is hosted within a graphitic schist unit within a strongly metamorphosed metasedimentary sequence. The geology and mineralisation dips to the south-west at an angle of approximately 40 degrees A mafic intrusion cuts through the surrounding geology and mineralisation.

Resource Dimensions and Open Mineralisation
The Emperor resource extends 520m North-West to South-East. The mineralisation follows the anticline of the hosting graphite schist units ranging in thickness between 5m and 70m. Mineralisation is open along strike and at depth along the fold limbs. Whilst these new discoveries have insufficient data to be confidently modelled, they do indicate that the Emperor resource has the potential to substantially increase in size.

The Wahoo resource extends 300m West-South-West to East-North-East dipping to the South-East. The mineralisation follows the bedding of the hosting graphite schist units ranging in thickness between 5m and 15m. Mineralisation is open to the southwest.

Reserves

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Mining Methods

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Required Heavy Mobile Equipment

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Comminution

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Processing

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Commodity Production

Operational metrics

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* According to 2025 study.

Production Costs

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* According to 2025 study / presentation.

Project Costs

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Personnel

Mine Management

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....................... Subscription required ....................... Subscription required Subscription required Jan 11, 2026
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Workforce

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