Projet Mine d'or Troilus

2023 Ressources Minérales

2023 Mineral Resource Estimate

On October 16, 2023, Troilus reported the results of an updated Mineral Resource Estimate (“MRE”) for its gold-copper Troilus Project, located in northcentral Quebec, Canada. Read the press release HERE

Highlights of the 2023 MRE include:

  • Total Indicated Mineral Resources of 11.21 Moz AuEq (508.3 Mt at 0.69 g/t AuEq), representing an increase of 126% in ounces and a 187% increase in tonnes compared to the 2020 MRE.
  • Additional Inferred Mineral Resources of 1.80 Moz AuEq (80.5 Mt at 0.69 g/t AuEq)
  • Over 99% of the mineral resources in the Indicated category are classified as amenable to “Open Pit” from zones Z87, J, X22, and Southwest, which will form the basis of the Feasibility Study anticipated for completion in early 2024.
  • Significant definition at the Southwest Zone and the new discovery of Zone X22 were major new contributors to the open pit MRE, accounting for approximately 28% of the AuEq ounces in the Indicated category. The breakdown by zone is as follows:
    •  Z87: 5.04Moz (197.1Mt at 0.80g/t AuEq), accounting for approximately 45% of open pit Indicated mineral resources.
    •  J Zone: 2.98 Moz AuEq (151.9Mt at 0.61g/t AuEq), contributing 27% to the open pit Indicated mineral resources.
    •  Southwest Zone: 1.89Moz AuEq (98.0Mt at 0.60 g/t AuEq), accounting for nearly 17% of the open pit mineral resources in the Indicated category. A significant increase compared to the 583,000 oz AuEq (22.6 Mt at 0.80 g/t AuEq) Inferred ounces in the 2020 MRE.
    •  Zone X22: Discovered in late 2022, and with only 23,256 metres drilled, this zone contributed 1.19Moz AuEq (59.2Mt at 0.62 g/t AuEq) or 11% of total open pit Indicated mineral resources.

2023 Mineral Resource Estimate Technical Presentation

Total Indicated and Inferred Mineral Resources, All Zones (Open Pit + Underground)

2023 MRE Wireframes and Pitshells + Resource Distribution by Zone

This updated mineral resource estimate, in accordance with the National Instrument 43-101 Standards of Disclosure for Mineral Projects ("NI 43-101") and CIM Definition Standards for Mineral Resources and Mineral Reserves, and reflects the results of 505 drill holes (216,502 metres of drilling) completed since the mineral resource estimate announced in July 2020. Approximately half of the drilling efforts were focused on the expansion and definition of the Southwest and X22 zones, the two most recently discovered ore bodies, which are both drilled to an Indicated level of confidence and will be included in the Feasibility Study’s mining scenario.

The mineral resource estimates for Z87, J Zone and the Southwest Zone contain both open pit and underground resources, while Zone X22 contains solely open pit mineral resources.

Total Indicated Mineral Resources, by Zone

Total Inferred Mineral Resources, by Zone

Open Pit Growth by Zone in the Indicated Category, 2016-2023

The following sensitivity table shows the potential for higher-grade mineral resources at higher gold equivalent cut-offs.

Open-Pit MRE Sensitivity Table

The following figure depicts a linear relationship between ore tonnes and grade at variable cutoff grades, outlining a robust resource that has low sensitivity to changing cut-off grades caused by changing market or economic conditions.

2020 vs. 2023 Mineral Resource Estimate Cross Sections

Notes Related to the Mineral Resource Estimate

  • The independent and qualified person for the mineral resource estimate, as defined by NI 43 101, is Paul Daigle, géo., Senior Resource Geologist at AGP. The effective date of the estimate is October 2, 2023.
  • Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability
  • Summation errors may occur due to rounding
  • Open pit mineral resources are reported within an optimized constraining shells
  • Open pit cut-off grade is 0.3 g/t AuEq where the metal equivalents were calculated as follows:
    •  Z87 Zone : AuEq = Au grade + 1.5628 * Cu grade + 0.0128 * Ag grade
    •  J Zone : AuEq = Au grade + 1.5107 * Cu grade + 0.0119 * Ag grade
    •  X22 Zone : AuEq = Au grade + 1.5628 * Cu grade + 0.0128* Ag grade
    •  SW Zone : AuEq = Au grade + 1.6823 * Cu grade + 0.0124 * Ag grade
  • Metal prices for the AuEQ formulas are: $US 1,850/ oz Au; $4.25/lb Cu, and $23.00/ oz Ag; with an exchange rate of US$1.00: CAD$1.30
  • Metal recoveries for the AuEQ formulas are:
    •  Z87 Zone: 95.5% for Au recovery, 94.7% for Cu recovery and 98.2% for Ag recovery
    •  J Zone : 93.1% for Au recovery, 89.3% for Cu recovery and 88.9% for Ag recovery
    •  X22 Zone : 95.5% for Au recovery, 94.7% for Cu recovery and 98.2% for Ag recovery
    •  SW Zone : 85.7% for Au recovery, 91.5% for Cu recovery and 85.6% for Ag recovery     
  • The resource constraining shells were generated with:
    •  Metal Prices: Gold $US 1,850/oz, Copper $US 4.25/lb, Silver $US 23/oz
    •  Mining Costs:
      • J Zone
      • waste – base $Cdn 2.15/t moved
        • incremental below 5360 $Cdn 0.039/t moved
      • ore – base $Cdn 2.29/t moved
        • incremental below 5360 $Cdn 0.036/t moved
    • 87 Zone
      • Waste – base $Cdn 1.99/t moved
        • incremental below 5360 $Cdn 0.041/t moved
      • Ore – base $Cdn 2.10/t moved
        • incremental below 5360 $Cdn 0.029/t moved
    • SW Zone
      • Waste – base $Cdn 2.01/t moved
        • incremental below 5360 $Cdn 0.036/t moved
      • Ore – base $Cdn 2.37/t moved
        • incremental below 5360 $Cdn 0.028/t moved
    • X22 Zone
      • Waste – base $Cdn 2.15/t moved
        • incremental below 5360 $Cdn 0.039/t moved
      • Ore – base $Cdn 2.29/t moved
        • incremental below 5360 $Cdn 0.036/t moved
    • Process and G&A Costs: $Cdn 9.05/t
    • Wall slopes: varied between 39 and 49 degrees depending on pit area and slope sector
    • Metal Recoveries:
      • J Zone - 91% Au, 88% Ag, 89% Cu
      • 87 Zone - 94% Au, 98% Ag, 94% Cu.
      • SW Zone - 82% Au, 86% Ag, 91% Cu.
      • X22 Zone - 93% Au, 95% Ag, 92% Cu.
  • Capping of grades varied between 2.00 g/t Au and 35.00 g/t Au; between 0.06% Cu and 3.0 %Cu, and between 3.20 g/t Ag and 50.00 g/t Ag; on raw assays.
  • The density (excluding overburden and fill) varies between 2.64 g/cm3 and 2.93 g/cm3 depending on lithology for each zone.
  • Underground cut-off grade is 0.9 g/t AuEq for Z87, J, X22 and SW