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Argentina
Lindero Mine

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 Location:
238 km W from Salta, Argentina

  Address:
Piso 2 Av. Reyes Católicos # 1224
Salta
Argentina
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  • Overview
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  • Geology
  • Mining
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  • Fleet
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  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Gold
  • Copper
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2034
The Brownfields exploration program for 2023 at the Lindero Mine will be focused on reviewing the Arizaro project, located 3.5 kilometers to the southeast of the mine. Exploration at Lindero will also extend to regional prospect evaluation and portfolio reviews.


Owners

Source: p. 14,45
CompanyInterestOwnership
Fortuna Silver Mines Inc. 100 % Indirect
Mansfield Minera S.A. (operator) 100 % Direct
Fortuna Silver Mines operates the open pit Lindero gold mine in northern Argentina. Mansfield Minera S.A. is the principal subsidiary of Fortuna Silver. Mansfield Minera S.A. – operates the Lindero gold mine.

Contractors

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Deposit Type

  • Porphyry
  • Breccia pipe / Stockwork
  • Vein / narrow vein


Summary:

The Lindero Property contains two known porphyry gold-copper deposits. The Lindero Deposit which is the focus of current mining activities (the Lindero Mine); and the Arizaro Deposit which is located 3.2 km southeast of the Lindero Mine. In the Central Andes, the altiplano or puna is a high plateau of more subdued relief between the Eastern Cordillera, a rugged region usually rising to between 3 km and 4.5 km, and the Western Cordillera, which is a high spine of mountains that may reach as much as 5 km in height. The Arizaro Volcanic Complex consists of two superimposed concentric volcanic centers, the Arizaro and the Lindero cones, located in the Archibarca volcanic arc at the southern margin of the Salar de Arizaro basin. Basement rocks crop out to the north of the Lindero Deposit, and consist of coarse- grained Ordovician granites uncomformably overlain by Early Tertiary red bed sandstones. The Lindero– Arizaro complex, a series of diorite to monzonite porphyritic stocks, intrudes these units.  Lindero Deposit Mineralized zones at the Lindero Deposit form a semi-circular shape about 600 m in diameter which extends to a depth of 600 m, consisting of four different zones at the surface. The distribution of gold–copper mineralization at Lindero shows a strong relationship to lithology, stockwork veinlets, and alteration assemblages. Higher grades of gold–copper (approximately 1 g/t Au and 0.1 % Cu) are commonly associated with sigmoidal quartz, quartz–magnetite– sulfide, bi ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The mine at the Lindero Property is an owner-operated conventional open pit mining operation. The key mining fleet equipment is composed of six trucks with an operational capacity of 96 tonnes per unit and two 17 cubic yard wheel loaders.  Pit designs  The ultimate pit was designed to allow mining of mill feed material. Internal pits or phases within the ultimate pits were designed to enhance mine economics by providing higher-value material to the leach pad earlier in the mine life.  Bench height  Pit designs were developed based on 8 m benches for mining.  Haulage considerations  Ramps were designed to have a maximum centerline gradient of 10 percent. In areas where the ramps may curve along the outside of the pit, the pit inside gradient may be as much as 11 or 12 percent for short distances.  Ramp width was determined as a function of the largest truck width to be used in mine planning. Design criteria accounts for 3.5 times the width of the truck for running room in areas using two-way traffic. An additional width is added to the ramp for a single safety berm at least two thirds of a tire height inside the pit. For roads designed outside of the pit, an additional safety berm is accounted for in the road width.  The mining truck fleet has an operational capacity of 96 tonnes per unit. The phases were designed to have 24.5 m wide ramps where two-way traffic is anticipated.  Ultimate pit and pit phasing The ultimate pit design is circular with a maximum diameter of 85 ........


Crushing and Grinding
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Processing

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Summary:

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^ Guidance / Forecast.

Production:

CommodityProductUnits2023202220212020Avg. Annual (Projected)LOM (Projected)
Gold Total koz  ......  Subscription required ^  ......  Subscription required  ......  Subscription required
Gold Metal in doré koz  ......  Subscription required  ......  Subscription required  ......  Subscription required1,150
Gold Payable metal koz 961,149
^ Guidance / Forecast.
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Operational Metrics:

Metrics202220212020
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required
Stripping / waste ratio  ......  Subscription required  ......  Subscription required  ......  Subscription required
Daily processing capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Total tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required
Daily processing rate  ......  Subscription required  ......  Subscription required  ......  Subscription required
^ Guidance / Forecast.
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Reserves at December 31, 2022:
Mineral Reserves for the Lindero Deposit are reported based on open pit mining within designed pit shells based on variable gold cut-off grades and gold recoveries by metallurgical type. Met type 1 cut-off 0.27 g/t Au, recovery 75.4 %; Met type 2 cut-off 0.26 g/t Au, recovery 78.2 %; Met type 3 cut-off 0.26 g/t Au, recovery 78.5 %; and Met type 4 cut-off 0.30 g/t Au, recovery 68.5 %.

Mineral Resources are cut-off grade 0.23 g/t Au.

CategoryTonnage CommodityGradeContained Metal
Proven 25,505 kt Gold 0.61 g/t 504 koz
Proven 25,505 kt Copper 0.08 %
Probable 53,713 kt Gold 0.54 g/t 937 koz
Probable 53,713 kt Copper 0.11 %
Proven & Probable 79,218 kt Gold 0.57 g/t 1,441 koz
Proven & Probable 79,218 kt Copper 0.1 %
Measured 1,855 kt Gold 0.5 g/t 30 koz
Measured 1,855 kt Copper 0.12 %
Indicated 27,594 kt Gold 0.42 g/t 369 koz
Indicated 27,594 kt Copper 0.1 %
Measured & Indicated 29,448 kt Gold 0.42 g/t 399 koz
Measured & Indicated 29,448 kt Copper 0.1 %
Inferred 24,170 kt Gold 0.47 g/t 365 koz
Inferred 24,170 kt Copper 0.11 %

Commodity Production Costs:

CommodityUnits2023202220212020
Total cash costs (sold) Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†  ......  Subscription required†
All-in sustaining costs (sold) Gold USD  ......  Subscription required ^†  ......  Subscription required†  ......  Subscription required†
All-in costs Gold USD  ......  Subscription required†  ......  Subscription required†
^ Guidance / Forecast.
† Net of By-Product.
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Financials:

Units2023202220212020201920182017
Capital expenditures (planned) M USD  ......  Subscription required
Sustaining costs M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required 27.5  
Capital expenditures M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Revenue M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
Operating Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -4.1  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
After-tax Income M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required
EBITDA M USD  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required -0.3  
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Pipelines and Water Supply
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Heavy Mobile Equipment:
HME TypeSizeQuantityStatusRef. Date
Dozer 449 HP ....................... Subscription required Existing Dec 31, 2018
Drill (blasthole) 800 HP ....................... Subscription required Existing Dec 31, 2018
Excavator 5 cu. yd ....................... Subscription required Existing Dec 31, 2018
Grader 250 HP ....................... Subscription required Existing Dec 31, 2018
Loader 17 cu. m ....................... Subscription required Existing Dec 31, 2022
Truck (haul) 96 t ....................... Subscription required Existing Dec 31, 2022
....................... Subscription required ....................... Subscription required ....................... Subscription required Proposed Dec 31, 2022
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Dec 31, 2022
....................... Subscription required ....................... Subscription required Subscription required Mar 18, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 18, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 18, 2023
....................... Subscription required ....................... Subscription required Subscription required Mar 18, 2023
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2021
Subscription required Subscription required Subscription required 2020

Corporate Filings & Presentations:

DocumentYear
Corporate Presentation 2023
Press Release 2023
Year-end Mineral Reserves 2023
Corporate Presentation 2022
Financial Review 2022
Management Discussion & Analysis 2022
Press Release 2022
Technical Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Management Discussion & Analysis 2018
Press Release 2018
Technical Report 2017
Feasibility Study Report 2016
Subscription required - Subscription is required.

Subscription required - Subscription is required.

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