/ Santo Domingo

Santo Domingo (Porphyry copper-gold)

Royal Road executed an option agreement to earn 100% of the Santo Domingo porphyry district in February of 2023.

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Accessible, drill-ready and exposed at surface

The Santo Domingo district is located in Argentina’s San Juan province, 150 km east of San Juan City at an average altitude of approximately 1200 meters above sea level. The district comprises three, as-yet undrilled porphyry copper-gold occurrences (El Arriero, Divisiora and Alunita) and several vein-hosted gold and silver occurrences located within a mineral rights package covering a total area of approximately 250 square kilometers.

Classic zoned copper-gold porphyry

Significant occurrences of copper and gold were first identified in the Santo Domingo district by the Titleholder in 2007. From 2008 to 2014 the area was subject to option agreements between the Titleholder and a third party. The parties concluded a work program which included channel and select rock chip sampling, ground magnetics, Pole-Dipole IP and Audio Magneto-Tellurics (AMT). Subsurface targets were identified but the option agreement was terminated before the commencement of drilling.

The Santo Domingo district is hosted in the Cerro la Huerta, a range of uplifted crystalline basement rocks comprising part of the Sierras Pampeanas geological terrane. The Sierras Pampeanas hosts the Alumbrera copper gold deposit (MARA JV; Yamana, Glencore and Newmont) and the historic La Mejicana gold deposit which are hosted in intermontane basins or within discrete basement blocks which have been exhumed in the last six million years.



Santo Domingo Drilling Data

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The porphyry occurrences at Santo Domingo are of a significant surface extent and show characteristic zoned porphyry-style alteration from central potassic cores (secondary biotite ± potassic feldspar) with quartz-magnetite-chalcopyrite veins, passing outwards to phyllic and propylitic styles of alteration. Although previous work has considered the porphyry occurrences as discrete and separate systems, rock chip geochemistry seems to show a classic zoned pattern with copper only mineralization hosted within a potassic core at El Arriero and gold (including continuous rock-chip channel samples of 19.7 meters at 2.1 grams per tonne gold at El Arriero West) seemingly occurring peripheral to this core. Furthermore, topography and mapped intrusion patterns may be interpreted to imply that the area sits within the immediate roof zone to a larger and connected porphyry copper and gold system concealed at depth.

Santo Domingo district, rock-chip and channel sampling

In Colombia Royal Road Minerals operates through its wholly-owned Colombian companies Minerales Camino Real SAS founded in 2015 and Exploraciones Northern Colombia SAS acquired from previous owners in 2019. In Argentina Royal Road Minerals operates through its wholly owned Argentinian company, Minerales Camino Real Argentina. In Saudi Arabia and Morocco the Company operates through its 50% owned Saudi Arabian registered subsidiary, Royal Road Arabia.

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