The deposits and prospects found within the Project area are considered to be examples of porphyry-style deposits, in particular gold-rich porphyries.

Tectonic setting, geological environment, intrusive rocks, alteration assemblages and mineralization of the Arizaro and Lindero deposits display the characteristics of gold-rich porphyry copper deposits as described by Sillitoe (2000).

Overall, the Arizaro deposit as currently defined is roughly circular in plan view, extending 650 m north-south and 600 m east-west. The gold-copper mineralization is associated with strong potassic alteration with a surrounding zone of propylitic alteration. The higher-grade core of the deposit, with gold grades averaging 0.6 g/t gold, is characterized by magnetite- and biotite-rich breccias. Surrounding the mineralized breccias, gold grades average 0.2 g/t gold. Copper grades are more consistent across the deposit averaging 0.15% copper. Thin veins (<5cm wide) of quartz-magnetite, quartz, quartz-sulfide, biotite-chalcopyrite, and late-stage anhydrite-sulfide, along with chalcopyrite-magnetite disseminations, occur within the breccias. In some areas, the vein density is high, forming vein stockworks. Chalcopyrite and bornite are the main copper minerals with copper oxides, primarily chrysocolla and brochanthite, occurring within the upper 50m to 100m. Gold is primarily associated with chalcopyrite, quartz, and anhydrite veinlets. Coarse gold does occur and was identified macroscopically in an anhydrite-chalcopyrite-molybdenite vein. Magnetite is common as massive replacements of the matrix in breccias, in veinlets and as disseminations.

The 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. Distribution of the gold–copper mineralization at Lindero shows a strong relationship to lithology, stockwork veinlets, and alteration assemblages. Gold values average 0.70 g/t and copper values are typically about 0.11%. Higher grades of gold–copper (approximately 1 g/t Au and 0.1% Cu) are commonly associated with sigmoidal quartz, quartz–magnetite–sulfides, biotite-magnetite– chalcopyrite, magnetite–chalcopyrite and quartz–limonite–hematite stockworks which are strongly associated with K-feldspar alteration. This association is very common in the east zone of the deposit, where the highest gold grades occur. At other locations where one or more stockwork types are missing or the intensity of fracturing is lower, mineralization tends to be weaker and the grades of gold tends to be lower (approximately 0.4 g/t Au).

The Lindero deposit has been planned as an open-pit truck and shovel operation. The truck and shovel method provides reasonable cost benefits and selectivity for this type of deposit. Only open-pit mining methods are considered for mining at the Lindero deposit.

Feb. 20, 2019
All mine equipment required for the start of operations has arrived and has been assembled on site including; six 100 ton trucks, two 17 cubic yard wheel loaders, one 5 cubic yard crawler excavator, two 449 HP dozers, two 250 HP motor graders,­­ and two 800 HP rotary blast hole drill rigs.

Run-of-mill (ROM) ore will be transported from the mine in 91-tonne surface haul trucks and dumped in a 200-tonne capacity ROM feed bin.

Observation shows that HPGR crushing will generate flakes when treating the Lindero ore. These flakes will be sufficiently durable that they will survive the agglomerating drum and will pass unagglomerated to the heap. In order to break these flakes, a Gundlach continuous tooth roll crusher will be placed in the circuit. The roll crusher will contain two opposing inter-meshed timed rolls with a 25 mm gap. A fixed scalping screen will divert any non-flaked material around the crusher. The product of the de-flaking crusher will report to the agglomeration surge bin.

The agglomeration circuit is designed to mix concentrated cyanide and cement with the HPGR- crushed ore, and adhere the fine particles to the coarse rock by tumbling the mixture in a rotating drum.

Agglomerated ore stacking will be undertaken using c ........