Resources and Reserves

Resources and Reserves

During 2020, the Company significantly increased consolidated Mineral Resources through the generation of an updated Mineral Resource Estimate on the Evolución Project in Zacatecas and the acquisition of the Kilgore and Oakley Projects in Idaho. The Company’s consolidated Mineral Resources are summarized as follows as at March 31, 2021.

    GRADE CONTAINED METAL (‘000S)
Project Quantity Ag Au Pb Zn AgEq Ag Au Pb Zn AgEq
(‘000 t) (g/t) (g/t) (%) (%) (g/t) (oz) (oz) (lbs) (lbs) (oz)
 Silver-Lead-Zinc Indicated Mineral Resources
Platosa1 317 485 - 5.3 5.5 751 4,948 - 36,797 38,781 7,659
Evolución2 6,407 64 0.10 1.0 1.1 170 13,154 19 140,741 161,548 35,091
Total Indicated 6,724 84 0.10 1.2 1.3 197 18,102 19 177,538 200,329 42,750
Silver-Lead-Zinc Inferred Mineral Resources
Platosa1 42 749 - 4.3 5.4 991 1,007 - 4,000 5,002 1,338
Evolución2 14,960 39 0.10 0.8 1.2 135 18,524 49 247,459 377,747 64,813
Total Inferred 15,002 41 - 0.8 1.2 137 19,531 49 251,459 382,749 66,151
Gold Indicated Mineral Resources
Kilgore3 44,556 - 0.58 - - - - 825 - - -
Total Indicated 44,556 - 0.58 - - - - 825 - - -
Gold Inferred Mineral Resources
Kilgore3 9,399 - 0.45 - - - - 136 - - -
Oakley4 9,972 - 0.51 - - - - 163 - - -
Total Inferred 19,371 - 0.48 - - - - 299 - - -

(1) Estimated at a cut-off grade of 275 g/t AgEq and silver, lead and zinc prices of $24.00, $0.86 and $1.10, and assuming metal recoveries of 91% for silver, 80% for lead and 80% zinc. AgEq calculated using the following formula, AgEq = Ag(g/t) + 21.60*Pb(%) + 27.63*Zn(%).
(2) Estimated at a cut-off grade of 90 g/t AgEq and silver, gold, lead and zinc prices of $17.00/oz, $1,550/oz, $0.90/lb and $1.15/lb, and assuming metal recoveries of 76% for silver, 20% for gold, 90% for lead and 88% zinc.  AgEq calculated using the following formula, AgEq = Ag(g/t) + 42.99*Pb(%) + 23.99*Zn(%).
(3) Estimated at a cut-off grade of 0.21 g/t Au, gold price of $1300/oz, and assuming metal recoveries of 80%.
(4) Estimated at a cut-off grade of 0.31 g/t Au, gold price of $1200/oz, and assuming metal recoveries of 70%.

Email Signup

Sign up for the latest news and updates