Catalyst Metals

ASX:CYL

Resources and Reserves

Total Ore Reserve

Proven Probable Total
Ore Reserve Tonnes (kt) Grade (g/t Au) Ounces (koz) Tonnes (kt) Grade (g/t Au) Ounces (koz) Tonnes (kt) Grade (g/t Au) Ounces (koz)
Plutonic Underground5 - - - 7,448 2.6 616 7,448 2.6 616
Plutonic East Underground5 - - - 456 2.5 36 456 2.5 36
Trident Underground4 - - - 1,199 4.7 182 1,199 4.7 182
Trident West Open Pit4 - - - 144 1.4 6 144 1.4 6
K2 Underground5 - - - 147 4.3 20 147 4.3 20
Group Total - - - 9,394 2.9 861 9,394 2.9 861

Total Mineral Resource

Measured Indicated Inferred Total
Mineral Resource Tonnes (Mt) Grade (g/t Au) Ounces (koz) Tonnes (Mt) Grade (g/t Au) Ounces (koz) Tonnes (Mt) Grade (g/t Au) Ounces (koz) Tonnes (Mt) Grade (g/t Au) Ounces (koz)
Plutonic Underground5 - - - 16.5 2.9 1,536 0.7 2.6 62 17.2 2.9 1,598
Trident Underground9 - - - 2.6 6.4 527 2.1 3.9 268 4.7 5.3 795
Trident West Open Pit4 - - - 0.4 1.3 16 - - - 0.4 1.3 16
K2 Underground1 - - - 0.2 4.2 31 0.5 3.4 49 0.7 3.6 81
Plutonic East Underground5 - - - 0.9 2.8 80 1.3 2.4 102 2.2 2.5 182
Triple-P & Zone-B Underground6 - - - - - - 0.2 4.3 24 0.2 4.3 24
Marwest & Mars Open Pit6 - - - 0.7 2 45 - - - 0.7 2 45
Mareast Open Pit6 - - - 0.5 1.9 30 - - - 0.5 1.9 30
East Mareast Open Pit6 - - - 0.2 1.1 8 - - - 0.2 1.1 8
Wedgetail Open Pit6 - - - 0.2 1.7 10 - - - 0.2 1.7 10
PHB-1 (K3) Open Pit7 - - - 0.1 2.2 7 0.1 2.8 7 0.2 2.5 14
K1 Open Pit7 (CYL interest 95.9%) - - - - - - 0.9 2.1 61 0.9 2.1 61
Triple-P & Triple-P Sth Open Pit6 - - - 0.6 2.1 42 0.5 1.4 21 1.1 1.8 63
Albatross & Flamingo Open Pit6 - - - - - - 0.9 1.4 38 0.9 1.4 38
Cinnamon Open Pit6 - - - 1.5 1.8 86 0.5 1.9 32 2 1.8 119
Zone 400 Underground8 - - - 0.9 4.8 135 0.1 2.2 5 0.9 4.6 140
Zone 400 Open Pit8 - - - 0.1 2.8 13 - - - 0.1 2.8 13
Zone 250 Open Pit8 - - - 1 1.6 53 - - - 1 1.6 53
Total Plutonic and Marymia - - - 26 3.1 2,619 8 2.7 669 34 3 3,290
Boyd's Dam1 - - - 0.5 5 73 0.1 5 20 0.6 5 93
Iris Zone1 - - - - - - 0.1 26.2 70 0.1 6 70
Total Bendigo - - - 0.5 5 73 0.2 13.3 90 0.7 7.7 163
Group Total - - - 27 3.1 2,692 8 3 759 35 3.1 3,453

Attributable Ore Reserve

Proven Probable Total
Ore Reserve Tonnes (kt) Grade (g/t Au) Ounces (koz) Tonnes (kt) Grade (g/t Au) Ounces (koz) Tonnes (kt) Grade (g/t Au) Ounces (koz)
Total Plutonic and Marymia - - - 18,105 2.6 1,541 18,105 2.6 1,541
Group Total - - - 18,105 2.6 1,541 18,105 2.6 1,541

Attributable Mineral Reserve

Measured Indicated Inferred Total
Mineral Resource Tonnes (Mt) Grade (g/t Au) Ounces (koz) Tonnes (Mt) Grade (g/t Au) Ounces (koz) Tonnes (Mt) Grade (g/t Au) Ounces (koz) Tonnes (Mt) Grade (g/t Au) Ounces (koz)
Total Plutonic and Marymia - - - 32.4 3.3 3,400 8.4 2.5 674 40.7 3.1 4,071
Total Bendigo - - - 0.3 4.5 37 0.1 14.0 45 0.4 7.2 82
Group Total - - - 32.6 3.3 3,437 8.5 2.6 719 41.1 3.1 4,152

Footnotes

  1. CYL announcement 15 June 2023 “Maiden Mineral Resource of 163,000oz at Four Eagles project”
  2. CYL announcement 8 December 2023 “Plutonic and Trident Reserves and Resources – Updated”
  3. CYL announcement 6 August 2024 “ Mineral Resource Update for K2 and Plutonic East Underground Mines”
  4. CYL announcement 3 July 2024 “Trident Maiden Reserve Underpins Low-Cost Development”
  5. CYL announcement 11 September 2024 “1Moz Reserve allows Catalyst to double production for A$31m”
  6. CYL announcement 22 February 2023 “Marymia Gold Project Mineral Resource – Updated”.
  7. CYL announcement 31 January 2025 “K1 and K3 Mineral Resource Update”
  8. CYL announcement 8 May 2025 “Catalyst acquires Old Highway Gold Project”
  9. CYL announcement 4 August 2025 “Trident Mineral Resource Update”