Projects

Ayawilca Zinc Zone

Overview

Mineral Resources

The current resources at the Ayawilca Project, as estimated by SLR Consulting (Canada) Ltd, are highlighted in the following tables.

Table 1 – Ayawilca Zinc Zone Mineral Resources as at August 30, 2021

Area

Tonnage
(Mt)

NSR
(US$/t)

Zn
(%)

Ag
(g/t)

Pb
(%)

 

Zn
(Mlb)

Ag
(Moz)

Pb
(Mlb)

 

Indicated

 

 

 

 

 

 

 

 

 

 

West

11.6

108

6.26

15.9

0.25

 

1,607

  6.0

65

 

South

  7.3

145

8.56

18.3

0.13

 

1,383

  4.3

22

 

Total Indicated

19.0

123

7.15

16.8

0.21

 

2,990

10.3

87

 

Inferred

 

 

 

 

 

 

 

 

 

 

West

5.5

106

5.90

20.8

0.42

 

   719

  3.7

  52

 

South

9.0

134

7.45

  34.4

0.33

  

1,477

10.0

  65

 

Central

17.4

  81

4.55

  13.8

0.34

 

1,747

  7.7

132

 

East

10.6

  88

5.04

  14.4

0.20

 

1,177

  4.9

  46

 

Silver

  0.4  933.58106.70.65      33  1.4    6 

Buffer

  4.9  874.66  19.20.63    504  3.0  69 

Total Inferred

47.9

  96

5.36

  20.0

0.35

 

5,657

30.7

370

 

Notes:

  1. The Mineral Resources disclosed in this press release have been estimated by Ms. Dorota El Rassi, P.Eng., SLR Consultant Engineer and Ms. Katharine M. Masun, MSA, M.Sc., P.Geo., SLR Consultant Geologist, both independent of Tinka.  By virtue of their education and relevant experience, Ms. El Rassi and Ms. Masun are “Qualified Persons" for the purpose of National Instrument 43-101.
  2. The Mineral Resources have been classified in accordance with CIM Definition Standards for Mineral Resources and Mineral Reserves (May, 2014).
  3. Mineral Resources are reported above a cut-off net smelter return (NSR) value of US$55/t. 
  4. The requirement of a reasonable prospect of eventual economic extraction is met by having a minimum modelling width for mineralized zones of three metres, a cut-off based on reasonable input parameters, and continuity of mineralization consistent with a potential underground mining scenario.  
  5. The NSR value was based on estimated metallurgical recoveries, assumed metal prices, and smelter terms, which include payable factors, treatment charges, penalties, and refining charges.  Metal price assumptions were, US$1.20/lb Zn, US$22/oz Ag, and US$0.95/lb Pb.  Metal recovery assumptions were, 92% Zn, 85% Ag, and 70% Pb.  The NSR value for each block was calculated using the following NSR factors; US$16.23/% Zn, US$0.27/g Ag, and US$10.20/% Pb.
  6. Payability is as follows; Zn 84%, Pb 94% and Ag 47%.
  7. The NSR value was calculated using the following formula: NSR = Zn(%)*US$16.23+Ag(g/t)*US$0.27+Pb(%)*US$10.20
  8. Numbers may not add due to rounding.

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