Overview
Stage | Permitting |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Mine Life | 18 years (as of Jan 1, 2023) |
Cordero is considered one of the world’s largest undeveloped silver resources.
Following the completion of a Pre-Feasibility Study with an effective date of January 20, 2023, the focus during the remainder of 2023 is now on the delivery of a Feasibility Study in Q1 2024, alongside property-wide exploration and the advancement of the construction permitting process. The PFS demonstrates that Cordero is a tier-one project with the potential to be developed into one of the largest silver mines globally.
On August 31, 2023, the Company announced that it has formally submitted its Environmental Impact Asessment for the Cordero Project. The submission was made to Secretaría de Medio Ambiente y Recursos Naturales, the federal government agency responsible for evaluating EIA submissions. |
Latest News | Discovery Silver Corp.: Positive Feasibility Results Establish Cordero as One of the World’s Leading Development-Stage Silver Projects February 20, 2024 |
Source:
p. 33
The Cordero property consists of the 26 titled Mining Concessions totalling 34,909 contiguous hectares owned by Minera Titán S.V. de C.V. Mexico (Titán), a wholly owned Mexican subsidiary of Discovery Silver.
Contractors
- Subscription is required.
Deposit Type
- Skarn
- Breccia pipe / Stockwork
- Epithermal
- Vein / narrow vein
- Carbonate hosted
Summary:
The Cordero deposit does not neatly fit into a specific category or class of conventional deposit model, due in part to the variability of mineralization type, style, and age across the large size of the project area. Observations from surface mapping and core logging in the resource area alone are consistent with overlapping mineralizing events of different ages. Of the deposit types that have been described and named in the technical literature, those most relevant to Cordero are:
- extensional intermediate sulphidation epithermal systems with many characteristics of the Real de Angeles in Zacatecas and many others across Mexico and the United States;
- carbonate-hosted Pb, Zn (Ag, Cu, Au) manto-style replacement (skarn) and crosscutting chimney-style sulphide mineralization associated with felsic to intermediate intrusive igneous rock and associated breccias formed from differing mechanisms like those at the Santa Eulalia mining district in north central Chihuahua and many others across Mexico and in the United States.
The Cordero property lies along the transition from the deeply incised dominantly volcanic Sierra Madre Occidental Province in the west to the more subdued topography related to the sediments of the eastern Mexican Basin and Range Province. The Cordero deposit is underlain by a pronounced north-northwest (NNW) trending fold and thrust marine sedimentary sequence.
The currently defined Cordero main resource pit is located along ........
Summary:
The Cordero project will use open pit mining methods with truck and shovel equipment that has been proven in similar operations. The major production unit operations will include drilling, blasting, loading, hauling, and dumping. These activities are planned to be completed with an owner/operator fleet. There is currently no plan to extend the mine operation using underground mining methods.
Mining activity commences in advance of the sulphide process plant achieving commercial production and includes the placement of material on the stockpile. The mine schedule plans to deliver 284 Mt of sulphide mill feed grading 27.2 g/t Ag, 0.08 g/t Au, 0.72% Zn and 0.45% Pb over a mine life of 18 years. Processed rock also includes 19 Mt of oxides material grading 30.5 g/t Ag, 0.07 g/t Au, 0.33% Zn and 0.28% Pb. Waste tonnage totalling 640 M t will be delivered to either the tailings storage facility located east of the pit or the rock storage facilities adjacent to the pit. The overall strip ratio is 2.1:1 delivered. Oxides were included in the mill feed when they could displace lower value sulphides up to a maximum of 10% of the mill feed on a period basis. Of the life-of-mine mill feed ore tonnes, 6.2% were high-grade oxides and 31 Mt of oxide material remained in stockpiles at the end of processing due to the 10% blending limit.
Seven pit phases were developed for the single open pit. Mining will occur on 10 m lifts with safety benches every 20 m using the prov ........
Source:
- subscription is required.
Flow Sheet:
Summary:
- subscription is required.
Pipelines and Water Supply
Source:
- subscription is required.
Reserves at January 18, 2023:
Mineral reserves are stated within the final pit designs based on a US$20.00/oz silver price, US$1,600/oz gold price, US$0.95/lb lead price and US$1.20/lb zinc price. An NSR cut-off of US$10.0/t was used to define sulphide reserves.
Sulphide Mineral Resources above an NSR Cut-off of $7.25/t and within a Reporting Pit Shell. Oxide Mineral Resources above an NSR Cut-off of $7.25/t and within a Reporting Pit Shell.
Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
Proven & Probable
|
Sulphide
|
284 Mt
|
Silver
|
27 g/t
|
248 M oz
|
Proven & Probable
|
Oxide
|
19 Mt
|
Silver
|
31 g/t
|
19 M oz
|
Proven & Probable
|
Total
|
302 Mt
|
Silver
|
27 g/t
|
266 M oz
|
Proven & Probable
|
Sulphide
|
284 Mt
|
Gold
|
0.08 g/t
|
0.75 M oz
|
Proven & Probable
|
Oxide
|
19 Mt
|
Gold
|
0.07 g/t
|
0.04 M oz
|
Proven & Probable
|
Sulphide
|
284 Mt
|
Lead
|
0.45 %
|
2.79 B lbs
|
Proven & Probable
|
Oxide
|
19 Mt
|
Lead
|
0.28 %
|
0.12 B lbs
|
Proven & Probable
|
Total
|
302 Mt
|
Lead
|
0.44 %
|
2.94 B lbs
|
Proven & Probable
|
Sulphide
|
284 Mt
|
Zinc
|
0.72 %
|
4.52 B lbs
|
Proven & Probable
|
Oxide
|
19 Mt
|
Zinc
|
0.33 %
|
0.14 B lbs
|
Proven & Probable
|
Total
|
302 Mt
|
Zinc
|
0.7 %
|
4.65 B lbs
|
Measured & Indicated
|
Sulphide
|
653 Mt
|
Silver
|
20 g/t
|
413 M oz
|
Measured & Indicated
|
Oxide
|
63 Mt
|
Silver
|
26 g/t
|
54 M oz
|
Measured & Indicated
|
Total
|
716 Mt
|
Silver
|
20 g/t
|
467 M oz
|
Measured & Indicated
|
Sulphide
|
653 Mt
|
Gold
|
0.05 g/t
|
1,128 koz
|
Measured & Indicated
|
Oxide
|
63 Mt
|
Gold
|
0.07 g/t
|
136 koz
|
Measured & Indicated
|
Total
|
716 Mt
|
Gold
|
0.06 g/t
|
1,264 koz
|
Measured & Indicated
|
Sulphide
|
653 Mt
|
Lead
|
0.29 %
|
4,211 M lbs
|
Measured & Indicated
|
Oxide
|
63 Mt
|
Lead
|
0.24 %
|
333 M lbs
|
Measured & Indicated
|
Total
|
716 Mt
|
Lead
|
0.29 %
|
4,544 M lbs
|
Measured & Indicated
|
Sulphide
|
653 Mt
|
Zinc
|
0.56 %
|
8,079 M lbs
|
Measured & Indicated
|
Oxide
|
63 Mt
|
Zinc
|
0.29 %
|
405 M lbs
|
Measured & Indicated
|
Total
|
716 Mt
|
Zinc
|
0.54 %
|
8,484 M lbs
|
Measured & Indicated
|
Sulphide
|
653 Mt
|
Silver Equivalent
|
49 g/t
|
1,037 M oz
|
Measured & Indicated
|
Oxide
|
63 Mt
|
Silver Equivalent
|
47 g/t
|
95 M oz
|
Measured & Indicated
|
Total
|
716 Mt
|
Silver Equivalent
|
49 g/t
|
1,132 M oz
|
Inferred
|
Sulphide
|
109 Mt
|
Silver
|
13 g/t
|
46 M oz
|
Inferred
|
Oxide
|
36 Mt
|
Silver
|
18 g/t
|
21 M oz
|
Inferred
|
Total
|
145 Mt
|
Silver
|
14 g/t
|
67 M oz
|
Inferred
|
Sulphide
|
109 Mt
|
Gold
|
0.02 g/t
|
82 koz
|
Inferred
|
Oxide
|
36 Mt
|
Gold
|
0.04 g/t
|
40 koz
|
Inferred
|
Total
|
145 Mt
|
Gold
|
0.02 g/t
|
122 koz
|
Inferred
|
Sulphide
|
109 Mt
|
Lead
|
0.21 %
|
510 M lbs
|
Inferred
|
Oxide
|
36 Mt
|
Lead
|
0.28 %
|
216 M lbs
|
Inferred
|
Total
|
145 Mt
|
Lead
|
0.23 %
|
726 M lbs
|
Inferred
|
Sulphide
|
109 Mt
|
Zinc
|
0.38 %
|
923 M lbs
|
Inferred
|
Oxide
|
36 Mt
|
Zinc
|
0.37 %
|
292 M lbs
|
Inferred
|
Total
|
145 Mt
|
Zinc
|
0.38 %
|
1,215 M lbs
|
Inferred
|
Sulphide
|
109 Mt
|
Silver Equivalent
|
33 g/t
|
118 M oz
|
Inferred
|
Oxide
|
36 Mt
|
Silver Equivalent
|
43 g/t
|
49 M oz
|
Inferred
|
Total
|
145 Mt
|
Silver Equivalent
|
35 g/t
|
167 M oz
|
- Subscription is required.