Au, Cu, Zn, Ag
100% Xstrata Canada Corporation (Xstrata Zinc)
Gold-bearing dykes (MacCormack showing)
The Destor-Porcupine deformation zone crops out in the central part of the property, revealing schistose komatiitic flows affected by carbonate-talc-chlorite and fuchsite alteration.
North dyke system
The calc-alkaline syenogranite dykes of the North system display ankerite-albite alteration and multiple injections of gold-bearing quartz-pyrite veinlets. They system is similar to the one associated with mineralization at the Kerr-Addison (10.0 Moz Au) and Harker-Holloway (5.5 Moz Au) mines.
- XTA-11-03: 0.17 g/t Au over 5.00 metres, including 0.43 g/t Au over 1.00 metre; 0.16 g/t Au over 4.00 metres, including 0.22 g/t Au over 1.00 metre.
The rhyolite is highly sericitized and chloritized. The MacCormack VMS system is comparable to the system at the giant Kidd Creek mine of Ontario (124 Mt) in terms of geochronology, geochemistry and geology.
Mineralization is found in massive sulphide lenses (sphalerite-chalcopyrite-pyrite-pyrrhotite), an exhalative pyrite horizon, chlorite stringers, and pyritic argillite-chert beds.
- XTA-10-01: 0.51% Cu, 0.49% Zn and 7.5 g/t Ag over 1.2 m, including 1.29% Cu, 0.67% Zn, 17.2 g/t Ag and 0.20 g/t Au over 0.4 m; 0.10 g/t Au over 5.0 m
New Ag-Zn showing
The rhyolite at the new Ag-Zn showing is highly sericitized and chloritized. It has a similar age and geochemical signature to the rhyolite hosting the giant Kidd Creek mine of Ontario (124 Mt). The showing occurs 3 kilometres southwest of the MacDeroff showing.
The mineralization is present in several forms: massive sulphide lenses (pyrite-pyrrhotite), disseminated sulphides (chalcopyrite-sphalerite), an exhalative pyrite horizon, chlorite stringers, and pyritic argillite-chert beds.
- Channel sample: 0.84% Zn and 0.12% Cu
- Grab sample: 5.3 g/t Ag over 1.0 m
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