Summary

Mine Type	Underground
Study Completed	Preliminary Economic Assessment
Stage	Permitting
Commodities	Gold Copper Silver
Mining Method	Longhole open stoping Bench stoping
Mine Life	...
Snapshot	Ravensthorpe-Forrestania Gold Project is a long life, high margin gold and copper mining and processing operation. The project is in an advanced stage of regulatory approval, with approvals under the Mining Act (WA) targeted within the 9 months, starting from May 2025. The project has significant potential to enhance returns through increased throughput and mine life extension. The Study considers the development of an underground gold and copper mine at Gem, Harbour View, Flag and Gem Restored in the fresh portion of the deposits over the LOM. Mined material will be trucked to the established Cosmic Boy processing plant located at FNO. The existing Cosmic Boy infrastructure will require modification to establish the required flowsheet and throughput rate. An updated MRE for Gem is expected in June 2025, and for Harbour View in July 2025. The Feasibility Study is set for completion by December 2025.

Deposit type

• VMS
• Hydrothermal
• Vein / narrow vein

Summary:

The Archean Ravensthorpe Greenstone Belt is situated in the southeast of the Youanmi Terrane and is considered an extension of the Southern Cross Province which is host to FNO. The Ravensthorpe Greenstone Belt forms a wedge-shaped enclave within granitoid gneiss (Witt, 1998). The Archean greenstones are unconformably overlain in the south by the Mesoproterozoic Mount Barren Group metasediments.

Local geology within the RGP area is comprised of a ~2 km wide northwest trending steeply east-dipping, sequence of intermediate to acid volcaniclastic rocks of the Annabelle Volcanics, situated along the eastern boundary of the Ravensthorpe Terrane. The eastern contact of the Annabelle Volcanics is structurally defined by the Chidnup Fault Zone, a major 40 km long thrust fault which bounds the Ravensthorpe Terrane in the west and the Carlingup Terrane in the east. To the west is the Manyutup Tonalite Complex which occupies the central part of the Ravensthorpe Greenstone Belt.

At KMC, gold-copper mineralised sulphide rich shears in a greenschist facies environment are associated with intense chloritization of volcanic wall rock. Alteration of volcanic rocks at both localities are involved in the enrichment of iron and magnesium, and the depletion of calcium and sodium, which is interpreted as the product of seafloor alteration followed by metamorphism.

These and other base metal-rich deposits in the Ravensthorpe Terrane are interpreted as deformed and metamorphosed stringer zones that formed within an Archean, syn-volcanic, submarine hydrothermal system of the type that is commonly linked to massive sulphide deposits. Sulphide and base metal-poor, gold-quartz vein deposits are also present in the Ravensthorpe Terrane. These probably formed at a later stage, during regional deformation. Low-potassium calc-alkaline rock, such as those that comprise the Ravensthorpe Terrane, are uncommon in the Yilgarn Craton, as is syn-volcanic gold-copper mineralisation (Witt, 1999).

The Study is based on the JORC 2012 compliant resources at Gem, Harbour View, Flag and Gem Restored.

Mineralogy of the lodes in the oxide zones is gossanous hematite-goethite-quartz and microscopic gold veining replacing pyrite-chalcopyrite, as well as traces of azurite and malachite. There tends to be copper depletion in the oxide zone with secondary copper hypogene minerals within the saprock environment. Gold occurs as free gold and as inclusions within pyrite. The Study only considers mineralisation within fresh rock.

Mining Methods

- subscription is required.

Comminution

Crushers and Mills

- subscription is required.

Processing

- subscription is required.

Commodity Production

Operational metrics

Metrics
Daily processing capacity	....
Annual ore mining rate	....
Annual processing rate	....
Annual processing capacity	....
Ore tonnes mined, LOM	....
Tonnes processed, LOM	....

Personnel

Job Title	Name	Profile	Ref. Date
.......................	.......................		Jun 23, 2025
.......................	.......................		Jun 23, 2025

Total Workforce	Year
......	2024