Fortuna Mining, operator of the Lindero Mine, reported progress on the Cerro Lindo and Arizaro projects, the latter located within the area of influence of the Lindero Mine.
By Panorama Minero
Cerro Lindo Project
Located approximately 70 kilometers west of Fortuna’s Lindero Mine, Cerro Lindo is characterized by an extensive 12-kilometer corridor of steam-heated alteration in Tertiary-aged andesitic volcanics, partially overlain by younger unaltered Miocene aged andesitic and basaltic flows, and includes a historic sulfur mine that was operational between 1940 and 1978. An option agreement to explore the 95 square kilometers Cerro Lindo Project was entered into during the quarter.
The property is considered prospective for hosting a high-sulphidation epithermal gold and silver system, analogous to Gold Field’s Salares Norte Project, located 125 kilometers to the south in neighboring Chile. Previous geochemical sampling has identified extensive areas of broad gold and silver anomalism with significant pathfinder elements including molybdenum, antimony, bismuth, tellurium, tin, lead, barium, tungsten, and selenium, as well as extensive quartz-alunite alteration and polymictic breccias.
Arizaro Deposit, Lindero Property
Located 3.5 kilometers southeast of the Lindero Mine, the Arizaro deposit is dominated by moderately to strongly mineralized south-west trending non-outcropping diorite intrusive, which hosts most of the existing Inferred Mineral Resource of 32.4 Mt averaging 0.37 g/t Au containing 389,000 ounces of gold. A second style of mineralization has been identified at Arizaro, consisting of north-south oriented magnetite-rich and potassic altered igneous-cemented breccias.
A total of 14 diamond drill holes were completed for 3,674 meters, with the program designed to investigate strike extensions and infill elements of the current resource. Drill results have been received for 7 drill holes to date.
Regional mapping and associated rock chip sampling have also highlighted a 2.5-kilometer southwest-trending anomalous gold and copper zone extending from the Arizaro gold-copper porphyry system. Multiple occurrences of fine quartz-magnetite veining hosted by a diorite intrusive similar to that intersected at Arizaro have been identified. This work has led to a re-evaluation of the potential extent of the host porphyry and emplacement history. Several targets were tested with 2,826 meters of diamond drilling in 10 holes, with results received for 2 to date
Arizaro Deposit drilling highlights:
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ARD68: 0.69 g/t Au, 0.40% Cu over an estimated true width of 22 meters from surface
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ARD69: 0.39 g/t Au, 0.19% Cu over an estimated true width of 27 meters from 10 meters
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ARD71: 0.52 g/t Au, 0.15% Cu over an estimated true width of 57 meters from 72 meters, and 0.58 g/t Au, 0.12% Cu over an estimated true width of 27 meters from 210 meters,
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ARD72: 0.39 g/t Au, 0.18% Cu over an estimated true width of 21 meters from surface, and 0.59 g/t Au, 0.29% Cu over an estimated true width of 46 meters from 100 meters
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ARD74 0.50 g/t Au, 0.19% Cu over an estimated true width of 10 meters from 174 meters
