Antash Project
Deposit Type and Mineralization

The Antash project is a large area with porphyry-style copper-molybdenum mineralization and alteration.

Oxidation and supergene leaching of sulphides is strong within the areas affected by phyllic alteration and strong fracturing. The leached capping contains limonite after 2 to 10 volume percent sulphides, with the best hematite contents along the topographic highs. Samples from the phyllic zone with strong supergene overprint yielded Cu values ranging from 100 to 1400 ppm, and Mo values greater than 100 ppm. Arsenic values greater than 70 ppm are constrained to the area of the breccia which has minimum dimensions of 1.5 km by 1.4 km. Two grab samples reported Au values of 394 ppb and 134 ppb.

The dominant sulphide mineral species in the system consists of pyrite and is concentrated in the outer part of the quartz-sericite zone and diminishes outwards until the propylitic zone. Most of the sulphides are disseminated; however they also occur in moderately developed stockwork veins. Traces of chalcopyrite - occasionally with secondary covellite and chalcocite - and molybdenite have been found in areas of deeper erosion into the system along the eastern limit of the property.

In the propylitic zone mineralization consists mostly of weathered sulphides.

Surface mineralization and alteration identified to date by Chariot geologists occurs as both oxide and sulphide phases. The oxides are typically small amounts of jarosite, goethite and hematite along with minor Cu-oxides in the form of chrysocolla and tenorite. In the quartz-sericite halo, there is a larger percentage of both disseminated and stockwork-related mineralization. In some places an extensive leached cap is developed (boxwork and leached cavities, glassy and earthy limonite). The quartz-clay-alunite halo is mineralized by numerous small stockwork veinlets, fracture infill and to lesser amount by disseminated mineralization.

Lithology vs copper and copper/molybdenum ratio

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