Pampa Metals

Highlights

Block 4 is a large property (6,600 hectares) hosting the priority, sub-cropping, uenavista porphyry Cu-Mo (-Au) target
Located along world’s preeminent Domeyko ordillera copper belt in northern Chile
Buenavista comprises sub-cropping quartz-veinlet stockwork hosted in a dated Tertiary dacite porphyry with phreatomagmatic breccia, flanked by a quartz-sulphide breccia with Cu-oxides to the west and a skarn with coarse disseminated chalcopyrite to the east
Geophysical anomalies (coincident magnetics and IP chargeability) in post-mineral covered alluvial “pampas” represent additional targets at Block 4
Maiden scout drill test (3 x DDH – 1,975m) completed in Q1/Q2 2023

Regional Geology

The Domeyko Cordillera mineral belt is a relatively narrow, north-south anastomosing fault zone with a complex structural history over + 600 km of the northern Chilean Andes, and includes uplifted blocks of Paleozoic to Mesozoic rocks and fault-controlled porphyry-related Tertiary magmatism
- Key Incaic deformation phase (~ 43Ma – 32Ma) associated with Middle Eocene to Early Oligocene magmatic arc, resulting in the emplacement of some of the world’s largest porphyry copper deposits and the development of the world’s single most productive porphyry Cu belt
- Including: Escondida: > 1Mt fine Cu / year – El Salvador: > 50Kt fine Cu / year
Located along world’s preeminent DLocal geology dominated by Paleozoic host rocks, and age-dated Early Tertiary porphyry at Buenavista

Access

Location

Block 4 is located approximately 135 km east-northeast of the coasttown of Taltal and 220 km southeast of the port of Antofagasta, and about 110 km south of the Escondida mining district, in northern Chile

Access

Access to the property is relatively easy, from Antofagasta or Taltal, from the Pan-American Highway (PAH), via a turn-off located 70 km north of Agua Verde on the PAH, and then an official graded dirt road that leads to Aguas Calientes. The dirt road passes directly by the historic Vaquillas mine and directly on to the Block 4 property, before continuing to Aguas Calientes

Other Details

Schematic Section at Buenavista with IP Anomaly

View of Buenavista Target Porphyry & Quartz-Veinlet Stockwork Zone, with Cu-Oxides in Pampa Metals’ Trenches in Foreground

Block 4 subject to limited historic exploration with minor trenching and approximately 10 old (1990s?), wide-spaced reverse circulation drill holes, of unknown provenance and results
- The key Buenavista target was historically untested by drilling or other historic surface activity, but was subject to a scout drill program (3 x DDH – 1,975m) by Pampa Metals in Q1/Q2 2023
Much of property is obscured by talus and colluvial deposits, and by extensive post-mineral volcanic and alluvial “pampa” cover to E, S and N of Buenavista
Pampa Metals has completed (in-house with all data available – including
- round magnetics (Q4 2021 – extended in Q2 2022)
- renching & sampling of central Buenavista target (> 200 samples – Q4 2021/Q1 2022)
- Reconnaissance style, wide-spaced, pole-dipole IP geophysical lines (5 E-W lines – Q2 2022)
- Geochemical soil sampling (> 2,500 samples / 3.5 km x 3.5 km – Q3 2022)
Results include (Buenavista Target):
- Central, isolated magnetic anomaly, coincident with IP chargeability anomaly, and mapped Tertiary dacite porphyry and phreatomagmatic breccia with quartz-veinlet stockwork, and Mo geochemistry
- Quartz-sulphide breccia with Cu-oxides to west and chalcopyrite skarn to east. Gold-silver anomalies.
- Individual drill samples reported maximum assay grades of 1.86 g/t Au (hole BV02-2023), 30 g/t Ag (hole BV02-2023), 0.45% Cu (hole BV02-2023) and 1,715 ppm Mo (hole BV03-2023)
Additional Targets:
- Magnetics data and IP data show coincident anomalies beneath postmineral cover to the east and south-southeast of the Buenavista target. More complex anomalies to thenorth