Plutonic Gold Mine
The Plutonic Gold Mine is located approximately 195km northeast of Meekatharra in the mid-west region of Western Australia, at the northern end of the world class Eastern Gold Fields Province.
The Project sits on granted mining leases with >40 kilometres in strike length along the Plutonic-Marymia Gold Belt, which extends from the Plutonic Gold Mine in the southwest to the Trident deposit in the northeast. Catalyst consolidated the belt in 2023 following the successful acquisition of Vango Mining and the merger with Superior Gold Inc.
Production ore is presently sourced from the Plutonic Main underground mine. Catalyst intends to bring three new mines into production during 2025. The first of the new mines, Plutonic East, produced its first stoping ore in early 2025.
K2 will be the second mine to be developed by Catalyst and will represent a third ore source for the Plutonic operations. It is located 40km north-east of the underutilised Plutonic processing plant, and preliminary site works have commenced to dewater and rehabilitate the existing underground decline.
Catalyst has also received underground mining approval from DEMIRS for the Trident deposit, a high-grade deposit located to the northeast of the Plutonic operations. The final, open pit mining approval has been submitted to DEMIRS and Catalyst remains on-track for first ore from Trident in the second half of CY2025.
Trident Gold Deposit
Trident is an undeveloped gold project located 30km north-east of the underutilised Plutonic processing plant. Trident comprises an open pit indicated Resource of 0.4Mt at 1.6g/t Au for 16koz Au, and an underground Resource of 4.2Mt at 3.7g/t Au for 508koz Au (including indicated of 1.6Mt at 5.0g/t Au for 257koz Au). Probable Ore Reserves are 1.3Mt at 4.4g/t for 188koz of gold.
Trident has an initial five-year mine plan producing an average of 37koz of gold per annum. Catalyst is undertaking a program of infill drilling targeting Inferred Resource conversion, as well as step out extensions at Trident, with the potential to extend the mine life beyond the initial five years.
Step out drilling in early 2025 intersected mineralisation 430m along strike and 600m below the existing resource, indicating the mineralisation footprint of the deposit is larger than anticipated.
Resource conversion drilling in early 2025 suggested higher-grade lodes are repeating at depth.
Drill results of note received from the drill program include:
- 8.9m at 9.8 g/t Au
- 13m at 4.5 g/t Au
- 11m at 7.5 g/t Au
- 2m at 24.1 g/t Au
- 8.5m at 9.5 g/t Au
- 5m at 9.2 g/t Au
- 11.5m at 5.6 g/t Au
- 11m at 3.7g/t Au
- 4.6m at 9.4 g/t Au
- 13m at 2.5 g/t Au
Trident is the third and largest mine to be developed in Catalyst’s three-year organic growth plan to 200koz of gold production.
Old Highway Gold Deposit
In May 2025, Catalyst executed binding documentation to acquire the Old Highway Gold Project from Sandfire Resources.
The Old Highway Gold Deposit is located 40km south of Plutonic along the Great Northern Highway with a Mineral Resource of 2.1Mt at 3.0g/t for 206koz of gold, including an underground Resource of 0.9Mt at 4.6g/t for 140koz of gold. Over 98% of the Resource is indicated material.
Given the close proximity to Plutonic, Old Highway can be processed through the Plutonic processing plant. Utilising other existing infrastructure at Plutonic (such as the camp) is also expected to reduce the upfront capital requirements for developing the project.
In addition, Catalyst believes Old Highway brings interesting exploration upside. Catalyst is hopeful further exploration will increase Old Highway’s mine life as well as other mineralised prospects within the area – Maficanti (12m @ 16.7 g/t Au), Cow Hole Bore (22m @ 5.3 g/t Au) and Shed Well East (15m @ 5.4 g/t Au).
