Definition drilling by Aurizon Mines (ARZ-T) on the 113 Zone at the Casa Berardi project in northwestern Quebec has confirmed the zone runs to at least 900 metres below surface.
New results from the zone show a true mineralized width averaging over 9 metres, with gold grades typically in the 5- to 20-gram-per-tonne range. Among the better results were intersections of 13 metres true width grading 35.8 grams per tonne, 15.5 metres grading 20.3 grams per tonne, and 18.3 metres grading 28.7 grams per tonne.
The 113 Zone, discovered in development drilling since the Casa Berardi mine closed, is a 20- to 70-metre-wide body of gold mineralization that adjoins the Casa Berardi fault. A mineralized envelope, dipping away from the fault, encloses folded quartz veins with gold. The highest-grade material forms steeply east-plunging shoots.
Further exploration is planned starting in February, when drilling can begin from a crosscut on the 550-metre level. An extension of the 550-level drift to the east will allow detailed drilling on two other new zones, the 118 and 122.
Aurizon is now calculating a resource for the 113 Zone between 700 and 900 metres depth, and a draft feasibility study on production from the zone above 700 metres is expected shortly. The current proven and probable reserve on the West Mine at Casa Berardi is 6.9 million tonnes grading 6.7 grams gold per tonne.
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