Overview
| Archived Information |
Mine Type | Open Pit |
Commodities |
|
Mining Method |
|
Mine Life | 12 years (as of Jan 1, 2014) |
Santa Gertrudis is an advanced exploration stage Project. Agnico Eagle acquired its 100% interest in the Santa Gertrudis gold property in November 2017 and does not recognize the results of PEA 2014.
The Santa Gertrudis property was the site of an historic heap leach operation that produced approximately 565,000 ounces of gold at a grade of 2.1 g/t gold from 1991 to 2000. Substantial surface infrastructure is already in place on the property including pre-stripped pits, haul roads, water sources and buildings.
The Company is currently evaluating a potential production scenario at Santa Gertrudis that utilizes a heap leach for lower-grade mineralization and a small mill facility to process higher-grade ore. The Company believes that the Santa Gertrudis project has the potential to be a similar size operation to La India. |
Source:
p. 35
In November 2017, the Agnico Eagle acquired its 100% interest in the Santa Gertrudis property.
Contractors
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Summary:
Historic production for the Santa Teresa mining district was principally from sedimentary-rockhosted gold deposits that have been characterized by some authorities as “Carlin-type” in character.
Northern Sonora has three northwest-trending mineralization corridors, which each have distinctive regional geological features. Santa Gertrudis covers a potential strike length of 25 km of the favourable Cretaceous-age intra-caldera sedimentary belt.
Three corridors with favourable geological formations have been identified on the property, with a potential strike length of 18 km. Within the corridors there are nine mineralized zones with multiple deposits; the mineralized deposits form trends that are hosted mainly by units within the sedimentary Morita, Mural and Cintura formations. Limited drilling has been completed between the deposits.
There appear to be three types of gold-silver mineralization (oxide, transitional and sulphide) at Santa Gertrudis. There is stratabound replacement mineralization in calcareous siltstone or on the margins of limestone. In addition, the Company's prospecting has identified high-grade mineralization along northeast-striking fractures that crosscut the stratigraphy and that appear to be important mineralization conduits.
Amelia is one of three deposits that comprise the Trinidad Trend and is the site of a previously operating open-pit gold mine. High-grade gold mineralization can be found in multiple par ........
Summary:
The Santa Gertrudis property contains numerous gold deposits, some of which were partially mined in the past. The deposits are near surface and lend themselves to conventional open pit mining methods. The entire project area is about 10 km long in both the north-south and east-west directions.
For the PEA production plan, 27 different open pits will be developed over the life of the project to support a heap leaching operation. Some heap leach feed material will also be mined from a historical heap leach pad that retains recoverable gold.
Based on preliminary pit optimizations, and the application of dilution and losses factors, potential mine production and heap leach feed tonnages were estimated for each deposit. The total quantity of material that would be sent to the leach pad is calculated to be 29.5 Mt containing 916 k oz of gold. The overall waste to potential heap leach feed ratio is 5.5:1.
Source:
Flow Sheet:
Summary:
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Source:
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Projected Production:
Commodity | Units | Avg. Annual | LOM |
Gold
|
oz
| 56,000 | 671,300 |
All production numbers are expressed as metal in doré.
* According to 2014 study.
Reserves at December 31, 2023:
Category | OreType | Tonnage | Commodity | Grade | Contained Metal |
Indicated
|
In-Situ (OP)
|
19,267 kt
|
Gold
|
0.91 g/t
|
563 koz
|
Indicated
|
In-Situ (OP)
|
19,267 kt
|
Silver
|
3.66 g/t
|
2,269 koz
|
Inferred
|
In-Situ (OP)
|
9,819 kt
|
Gold
|
1.36 g/t
|
429 koz
|
Inferred
|
In-Situ (UG)
|
9,079 kt
|
Gold
|
3.44 g/t
|
1,004 koz
|
Inferred
|
Total
|
18,898 kt
|
Gold
|
2.36 g/t
|
1,433 koz
|
Inferred
|
In-Situ (OP)
|
9,819 kt
|
Silver
|
1.85 g/t
|
585 koz
|
Inferred
|
In-Situ (UG)
|
9,079 kt
|
Silver
|
23.31 g/t
|
6,803 koz
|
Inferred
|
Total
|
18,898 kt
|
Silver
|
12.16 g/t
|
7,389 koz
|
Corporate Filings & Presentations:
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