Kootenay Commissions a Preliminary Economic Assessment on La Cigarra Silver Deposit and Continues to Aggressively Drill Columba
La Cigarra
La Cigarra is host to a pit constrained resource totaling 51.57 million ounces of measured plus indicated category (M+I) silver in 15.73 million tonnes grading 102 gpt silver, 0.07 gpt gold, 0.16% lead and 0.21 % zinc (60.56 million ounces Ag equivalent1) and another 11 million ounces of inferred category silver in 3.37 million tonnes grading 102 gpt silver, 0.06 gpt gold, 0.2 % lead an 0.19 % zinc (12.85 million ounces Ag equivalent1). See news release dated
La Cigarra sits along a mineralized trend extending from the famous
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La Cigarra Mineral Resource Estimate, 2024
- Measured + Indicated Mineral Resources are estimated at 15.73 Mt grading 102 g/t silver, 0.07 g/t gold, 0.16% lead, and 0.21% zinc (120 AgEq). The Measured MRE includes resources of 51.57 Moz of silver, 33.9 koz of gold, 54.8 Mlbs of lead, and 73.5 Mlbs of zinc (60.56 Moz AgEq).
- Inferred Mineral Resources are estimated at 3.37 Mt grading 102 g/t silver, 0.06 g/t gold, 0.20% lead, and 0.19% zinc (119 AgEq). The Inferred MRE includes resources of 11.00 Moz of silver, 6.00 koz of gold, 14.8 Mlbs of lead, and 13.8 Mlbs of zinc (12.85 Moz AgEq).
|
Resource Class |
Tonnes (MT) |
Grade |
Total Metal |
||||||||
|
Ag g/t |
Au g/t |
Pb % |
Zn % |
AgEq (g/t) |
|
Au (koz) |
Pb (Mlbs) |
Zn (Mlbs) |
1 AgEq (Moz) |
||
|
Measured |
2.08 |
103 |
0.06 |
0.16 |
0.22 |
121 |
6.90 |
4.30 |
7.6 |
9.9 |
8.10 |
|
Indicated |
13.65 |
102 |
0.07 |
0.16 |
0.21 |
120 |
44.66 |
29.60 |
47.3 |
63.6 |
52.46 |
|
Mea. + Ind. |
15.73 |
102 |
0.07 |
0.16 |
0.21 |
120 |
51.57 |
33.90 |
54.8 |
73.5 |
60.56 |
|
Inferred |
3.37 |
102 |
0.06 |
0.20 |
0.19 |
119 |
11.00 |
6.00 |
14.8 |
13.8 |
12.85 |
|
The base-case AgEq Cut-off grade of 50 g/t AgEq considers metal prices of |
|
1
AgEq = Ag ppm + (((Au ppm x Au price/gram) + (Pb% x Pb price/t) + (Zn% x Zn price/t))/Ag price/gram). Metal price assumptions are |
La Cigarra Mineral Resource Estimate Notes:
|
(1) |
The Mineral Resource Estimate was estimated by |
|
(2) |
The classification of the current Mineral Resource Estimate into Measured, Indicated and Inferred mineral resources is consistent with current 2014 CIM Definition Standards - For Mineral Resources and Mineral Reserves. The effective date for the Updated Mineral Resource Estimate is |
|
(3) |
All figures are rounded to reflect the relative accuracy of the estimate and numbers may not add due to rounding. |
|
(4) |
The mineral resource is presented undiluted and in situ, constrained by continuous 3D wireframe models, and are considered to have reasonable prospects for eventual economic extraction. |
|
(5) |
Mineral resources which are not mineral reserves do not have demonstrated economic viability. An Inferred Mineral Resource has a lower level of confidence than that applying to an Indicated Mineral Resource and must not be converted to a Mineral Reserve. It is reasonably expected that most Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration. |
|
(6) |
The La Cigarra mineral resource estimate is based on a validated database which includes data 201 surface diamond and RC drill holes totalling 36,988 m. The resource database totals 26,419 assay intervals representing 34,447 m of drilling. The average assay sample length is 1.30 m. |
|
(7) |
The mineral resource estimate is based on 9 three-dimensional ("3D") resource models, constructed in Leapfrog. Grades for Ag, Au, Pb and Zn were estimated for each mineralization domain using 1.5 metre capped composites assigned to that domain. To generate grade within the blocks, the inverse distance squared (ID2) interpolation method was used for all domains. Each domain was then subdivided into oxide and sulphide domains. |
|
(8) |
Average density values were assigned to oxide and sulphide domains and a waste domain based on based on a database of 1,412 samples. |
|
(9) |
It is envisioned that the La Cigarra deposit may be mined using open-pit mining methods. Mineral resources are reported at a base case cut-off grade of 50 g/t AgEq. The in-pit Mineral Resource grade blocks are quantified above the base case cut-off grade, above the constraining pit shell, below topography and within the constraining mineralized domains (the constraining volumes). |
|
(10) |
The results from the pit optimization are used solely for the purpose of testing the "reasonable prospects for economic extraction" by an open pit and do not represent an attempt to estimate mineral reserves. There are no mineral reserves on the Property. The results are used as a guide to assist in the preparation of a Mineral Resource statement and to select an appropriate resource reporting cut-off grade. |
|
(11) |
The base-case AgEq Cut-off grade considers metal prices of |
|
(12) |
The pit optimization and base case cut-off grade of 50 g/t AgEq considers a mining cost of |
|
(13) |
The estimate of Mineral Resources may be materially affected by environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues. |
Neither the
Qualified Persons
The Mineral Resource Estimate was estimated by
The
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CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS:
The information in this news release has been prepared as at
Forward-looking statements are necessarily based upon a number of factors and assumptions that, while considered reasonable by
Cautionary Note to US Investors: This news release includes Mineral Reserves and Mineral Resources classification terms that comply with reporting standards in
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