A new preliminary reserve calculation was released by Redfern Resources (TSE) for the Tulsequah Chief massive sulphide project in northwestern British Columbia. Redfern has a 40% interest in the project which is operated by 60% owner Cominco (TSE). Tulsequah Chief operated for several years in the 1950s until low metal prices forced a closure.
After incorporating 1990 exploration results, Redfern estimates that Tulsequah Chief contains reserves totalling 8 million tons grading 1.55% copper, 1.22% lead, 6.81% zinc, 0.08 oz. gold and 3.19 oz. silver per ton. The figures represent an addition of 2.2 million tons to the 5.8 million tons calculated at the end of the 1989 program.
Of the preliminary reserve total, Redfern calculated that 3.1 million tons were contained within the AB lens, and 4 million tons were contained in the H lens. Calculations for these lenses incorporate drill data from the 1987-1990 drill programs.
The AB lens reserve is based on 13 drill intercepts, while the H lens reserve is based on nine drill intercepts. The area of influence around each hole averages about 200 ft.
The average true width of the massive sulphide mineralization is 25.2 ft. and ranges from 6-to-130 ft.
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