Lindero Mine, Argentina

First gold pour in October 2020


Our Lindero Mine is in Salta, Argentina. The open-pit mine is operated by Mansfield Minera S.A., an Argentinian subsidiary 100% owned by Fortuna.

Fortuna acquired the fully permitted, shovel-ready development-stage project in July 2016. Over the following year, we optimized the Feasibility Study and made a positive construction decision in September 2017. Mass earth moving activities began in 2018, and the mine’s first gold pour occurred on October 20, 2020. In 2023, the mine produced 101,238 ounces of gold.

The deposit is a gold porphyry, and, based on December 31, 2023 reserves, Lindero has a pit life of 11 years.

Crushing circuit at Lindero is designed to crush 18,750 tonnes of ore per day. The crushed ore is placed on a leach pad with the resulting pregnant solution pumped to SART (Sulphidisation, Acidification, Recycling and Thickening) and ADR (Adsorption – Desorption – Regeneration) plants before electrowinning and refining, where gold is poured as doré bars.

We recognize the role the Lindero Mine plays in the sustainable development in the Tolar Grande region. In 2023, we employed 1,126 direct employees and contractors.

Lindero Mine Video







tonnes placed on the leach pad in 2023

Claim block area



Deposit type

Gold porphyry system

Mining method

Conventional open pit mining


Operating highlights 202312024E1
Ore placed on pad (Mt)6.06.6
Gold production (koz)101.293 – 105
AISC2,3,4 (US$/oz Au)1,5651,730 – 1,950


Our Lindero Mine is in the cold and dry Argentine Puna (plateau) at an altitude of approximately 3,500 to 4,000 meters above sea level (Latitude: 25° 04′ 56″ S, Longitude: 67° 46′ 47″ W). Mining occurs year-round. The mine is connected by road and railway to primary population centers. The regional capital, Salta, is 260 kilometres to the west and the closest town is Tolar Grande, approximately 75 kilometres from the mine.

Access to the mine is via National Route 51, which passes through the towns of San Antonio de Los Cobres and Olacapato, and by Provincial Route 27, which passes through the towns of Pocitos and Tolar Grande. Most of the Tolar Grande community are members of the traditional Kolla nation.

Geology and mineralization

The Lindero deposit is a gold porphyry system hosted within a series of diorite to monzonite porphyritic stocks that intrude coarse-grained Ordovician granites and Early Tertiary red bed sandstones. Mineralization forms an inward plunging semi-circular shape approximately 600 meters in diameter and extends to a drill-tested depth of 600 meters. Gold-copper mineralization shows a strong relationship to lithology, potassium-feldspar alteration, and stockwork veining.

Mineral reserves

71.5 million tonnes

averaging 0.56 g/t Au containing 1.3 Moz Au

Refer to Mineral Reserves and Resources table below for full disclosure

Brownfields exploration

The Brownfields exploration program for 2023 at the Lindero Mine of $0.3 million 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.

Mineral reserves and resources

    Contained Metal
PropertyClassificationTonnes (000)Au (g/t)Cu (%)Au (koz)
Mineral Reserves – Proven and Probable
Lindero, Argentina
 Proven + Probable71,5050.560.101,284
Mineral Resources – Measured and Indicated
Lindero, Argentina
 Measured + Indicated30,4640.420.10412
Mineral Resources – Inferred
 Lindero, ArgentinaInferred25,3250.470.11386
 Arizaro, ArgentinaInferred24,1310.400.15310

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