The Project is an undrilled copper, molybdenum and gold porphyry system discovered in San Marco’s generative program
- Surface alteration and mineralized footprint has increased to 1.6 kilometres X 1.5 kilometres (“km”) and is open for expansion in at least two directions.
- Rock chip assay and spectroscopy results from a grid rock sampling survey (0.8 km by 1.6 km), show a coincidental footprint.
- All data integration of geology, geochemistry and IP will allow San Marco to pinpoint additional drill targets.
- Poorly exposed erosional window into potassically altered mineralized intrusive (100 metres by 200 metres) is an obvious drill target.
- Extensive phyllically altered and stockwork-quartz-veined volcanic lithocap may have created favourable conditions for sealing the system acting as a trap for fluids, enhancing the mineralizing process. Drilling through this volcanic cap is another obvious drill target.
- Oxide copper occurs mainly in fractures and veinlets. Fresh sulphides (pyrite, chalcopyrite and molybdenite) were observed below the volcanic rock cap in potassic alteration.
- Semi-continuous channel sampling over part of a newly constructed road cut ran 62 metres of 0.1% copper; 215 ppm molybdenum and 0.044 g/t gold. Sampling was limited to where the bulldozer was able to build the road and not necessarily cutting the best outcrop exposures.
- Geochemical zonation suggests use of pathfinder elements as well as mapping alteration mineralogy can be utilized to vector to the best drill targets.
- The 1068 property is located approximately 160 kilometres east of Hermosillo in Sonora State, Mexico.
Surface exposures of the potassic altered feldspar-quartz-biotite porphyry core, exhibit multi-directional to sheeted quart sulphide veinlets (chalcopyrite, pyrite and molybdenite) with rock chip samples up to 0.59% copper, 0.4 g/t gold and 276 ppm molybdenum The Company believes that the 1068 Project is a classic zoned porphyry system with a broad envelope of quartz-sericite-pyrite alteration surrounding a potassic altered core. Recent mapping and sampling to the north and east of the overlying volcanic lithocap, extended the footprint of alteration and anomalous copper/gold geochemistry, suggesting the mineralized system will extend under the lithocap and beyond the limit of current exposure.
Results from geologic traverses, prospecting and rock chip sampling on 1068 have identified a nest of previously unmapped porphyritic intrusions along the northeastern contact of a much larger batholith. Preliminary geologic mapping indicates a large, zoned alteration system with a potassic (biotite-magnetite) altered core and a large phyllic (quartz-sericite) altered envelope.
One of these intrusions, a quartz-feldspar-biotite porphyry, exhibits quartz-chalcopyrite-pyrite-molybdenite bearing “B” veins, which are indicative of a porphyry Cu-Mo-Au system. Adjacent dacite porphyry and the overlying volcanic lithocap are phyllic altered and contain stockwork quartz-sericite-pyrite “D” veins.
Exposures of mineralized rock are very limited by topography and the size of the mineralized system remains to be determined.