Highlights
- Cerro Buenos Aires (“CB Aires”) is a large property (7,000 hectares) comprising key outcropsdisplaying advanced argillic to porphyry-style hydrothermal alteration assemblages, with significant areas of post- mineral gravel “pampa” cover
- Located along the Paleocene Porphyry Copper and Precious Metals Belt of northern Chile and southern Peru
- Mapped hydrothermal alteration, pathfinder geochemical anomalies, geophysical features, suggest a porphyry target at Co Chiquitin
- Detailed geological mapping, magnetics survey, IP surveys at Co Chiquitin, 9 wide- spaced RC drill holes through cover to N, E, and SW of Co Chiquitin
Regional Geology
- The Paleocene-Eocene mineral belt extends over more than 1,500 km from southern Peru to central northern Chile, and parallels the Domeyko and Coastal mineral belts to the E and W respectively
- The mineral belt is characterized by widespread Paleocene volcanic sequences and sub-volcanic porphyry intrusions and rhyo-dacite dome complexes, with large areas obscured by post-mineral Miocene gravel and volcanic cover
- The belt is host to major porphyry copper deposits such as Quellaveco (Peru) and Spence (Chile), as well as major LS epithermal (e.g. El Peñon) and HS epithermal (e.g. Guanaco) Au-Ag deposits
- Local geology dominated by volcanics, dacite domes, diorite porphyry, tourmaline breccia
Access
Location
Located approximately 35 km southwest of the important El Peñon LS epithermal Au-Ag mining district
Access
Access to CB Aires is very easy. The project is located alongside the Pan American Highway (PAH), approximately midway between the coastal town of Taltal ((110 km to the southwest) and the port of Antofagasta (125 km to the northwest)
Other Details
- All holes drilled around the small Cerro Chiqutin outcrop, in the northern third of the CB Aires project area, have returned a variety of anomalous precious metals and multi-element intersections, indicative of a fertile porphyry-type hydrothermal system in the vicinity
- Three drill holes closest to the outcropping tourmaline breccia and quartz-veined diorite porphyry at Co Chiquitin have the most anomalous geochemistry, with intersections in Au and Ag and significant anomalies in Cu, Mo, Zn, Pb, As, and Sb. The tourmaline breccia is in the inner periphery of a fertile hydrothermal system
- Includes 14m @ 0.18 g/t Au
- Target copper-rich core likely at depth – associated with resistive anomaly from IP geophysics
- Drill holes to north have fewer metallic indications, consistent with their location on the propylitic outer periphery of a porphyry system
- Geological and geochemical results to date from wide-spaced drilling at Co Chiquitin have clearly vectored towards a fertile porphyry-type hydrothermal system to the south and southeast of the Co Chiquitín tourmaline breccia
- Other geochemical and geophysical anomalies of interest for porphyry targets in areas of widespread, post-mineral cover on the larger CB Aires property
Targets
Paleocene-aged porphyry copper targets – covered
HS Epithermal Au-Ag systems – covered
Plans
Diamond drill test of covered Co Chiquitin porphyry copper target
Property-wide IP geophysics
Cerro Buenos Aires
Fact Sheet
Mar 2023