Trilogy Metals Logo Key Facts

Alaska, USA
Deposit Type
Volcanogenic Massive Sulphide
Arctic Sequence, Ambler Belt
Economic Elements
Copper, Zinc, Lead, Gold, Silver

Trilogy Metals Logo Download NI 43-101 Technical Report
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Trilogy Metals Logo Download SK-1300 Technical Report
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  • Notes
    • The Qualified Persons for the estimate is Henry Kim, P.Geo., a Wood employee. The estimate is reported using the 2014 CIM Definition Standards. The effective date of the Mineral Resource estimate is November 15, 2022.
    • Mineral Resources stated are contained within a conceptual pit shell developed using metal prices of $3.00/lb Cu, $0.90/lb Pb, $1.00/lb Zn, $1,300/oz Au and $18/oz Ag and metallurgical recoveries of 92% Cu, 77% Pb, 88% Zn, 63% Au and 56% Ag and operating costs of $3/t mining and $35/t process and general and administrative costs. The assumed average pit slope angle is 43º.
    • The base case cut-off grade is 0.5% copper equivalent: CuEq = (Cu% x 0.92) + (Zn% x 0.290) + (Pb% x 0.231) + (Au g/t x 0.398) + (Ag g/t x 0.005).
    • As a result of flattening the north end of the reserve pit to stabilize the pit wall due to the presence of talc, a portion of the reserve pit extended beyond the resource constraining pit shell.  Approximately 568 kt of 1.72% Cu, 0.77% Pb, 0.23 g/t Au and 21.3 g/t Ag in the Indicated category, and approximately 319 kt of 2.01% Cu, 0.87% Pb, 2.53% Zn, 0.50 g/t Au and 37.5 g/t Ag in the Inferred category were added to the Mineral Resource tabulation
    • The Mineral Resource estimate is reported on a 100% basis without adjustments for metallurgical recoveries.
    • The Mineral Resource estimate is reported inclusive of those Mineral Resource that were converted to Mineral Reserves.
    • Trilogy’s attributable interest is 50% of the tonnage and contained metal stated in the table.
    • Mineral Resources have been rounded.
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