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Santo Domingo


AbraSilver has entered into an option agreement to acquire a 100% interest in the Santo Domingo project, favourably located at low-altitude in the mining-friendly San Juan province, Argentina. The project is located within a historical mining district with no previous modern exploration.  


Santo Domingo/Marano Overview

The project area is located in the Sierra de La Huerta in San Juan Province, at an altitude of around 1,200 meters. There is a paved road 20 kilometers to the east of the project and the area is about 120 kilometers east of the capital, San Juan.

San Juan Province is host to several major mines and projects, including Veladero (Au), Barrick; Pascua Lama (Au, Ag) Barrick; Gualcamayo (Au) Yamana; Casposo (Au, Ag) Troy Resources; Los Pelambres (Cu) Antofagasta; Los Azules (Au Ag) Minera Andes; Altar (Cu, Au) Peregrine; El Pachon (Cu), Xstrata.

The geological belt of Sierra de La Huerta is made up of Precambrian metamorphics and Paleozoic intrusives and volcanics, rhyolite porphyries, granites, tonolites, dacitic and andesitic porphyries. Historic mining for lead, silver and gold has taken place. There appears to be widespread mineralization at the Santo Domingo project, with copper/gold-porphyries, breccia pipe and epithermal targets. The two main exploration target styles are:

Santo Domingo/Marano Location Map

Figure 1

Previous Exploration Work

Previous exploration work on the Project was completed by Orocobre Limited and Elementos Limited. Five prospects have been identified at Santo Domingo Project, corresponding to different levels within the porphyry environment. The conceptual geological model proposed for Santo Domingo grades from deeper to shallower as follows:

The Divisoria, El Arriero and El Arriero East porphyries are on the borders of a 2 kilometre diameter circular anomaly, potentially related with a large intrusive center at depth. The mineralized structures of El Arriero West and Yvette are in the periphery of the circular anomaly.

Figure 2

Table 1 – Historical results

Sample Au g/t Ag g/t Cu %
30515 4.64 35.8 0.56
200000 1.13 31.4 0.02
200001 3.21 331 0.01
600005 2.76 27.8 0.12
600019 1.29 17.1 0.05
150017 7.65 2 0.01
150020 1.14 1.6 0.01
11304-C 21.87 13.7 0.01
11306-C 40.07 25.2 -

Santo Domingo Mineralization Samples

Figure 3

Exploration objectives

Numerous target areas have been identified in the Santo Domingo project. These target areas have coincident geophysical, geological and geochemical characteristics that are consistent whit the presence of Au-Cu mineralized porphyry-type intrusive either at depth, with a high grade gold-silver (polymetallic) intermediate sulphidation narrow structures controlled by shear zones.

Next steps

As part of its exploration objectives, AbraSilver has decided to set up a local team in the province of San Juan.  By mid-2021 the Company has the following exploration objectives for the Santo Domingo project:

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