Recently finishing a summer exploration program at the Black Angel property in western Greenland, Angus & Ross (AGU-L) has confirmed downdip continuity of a long surface showing discovered in 2005.
A total of 26 holes drilled this past season on the South Lakes Glacier showing encountered mineralization over core lengths of mainly 1 to 3 metres, with high lead and zinc grades. Lead grades were mostly between 2% and 8%; zinc grades between 4% and 12%, and silver between 10 and 30 grams per tonne.
A few intersections were thicker, including an 8.4-metre interval that graded 2.4% lead, 5.8% zinc and 9.3 grams silver per tonne, and a 5.4-metre interval that graded 9.1% lead, 21.6% zinc and 37 grams silver. Some zones were very high-grade, including a 2.2-metre interval that ran 7.5% lead, 21.6% zinc and 37 grams silver per tonne.
A fan of four holes drilled from the same setup confirmed the zone down to a depth of 170 metres.
The surface showing is about 700 metres in strike length, and has been drill tested for 500 metres of that. It had been hidden under glacial ice during the period the mine was active (1973-1990). Recent glacial melt-out revealed the showing.
At another prospect, Ark — discovered by Cominco, now Teck Cominco (TCK-T, TCK-N), in the 1980s — Angus & Ross expects to be ready to calculate a resource figure once all assay results are in. Three recent holes intersected a zone of 6 to 7.4 metres wide with zinc grades of 5% to 7% and lead grades of 0.3 to 4.4%, plus some silver.
Angus & Ross’s program this year finished with about 8,675 metres of diamond drilling, and geophysical contractors performed a helicopter-borne survey of 300 line-km. The company also took bulk samples from the Glacier showing and from the workings of the old mine, where a 2006 prefeasibility study identified a remnant reserve of 2.2 million tonnes grading 9.7% zinc and 3% lead. That feasibility study suggested production would be economic at prices around US$1,950 per tonne zinc (US88 per lb.) and US$1,100 per tonne lead (US50 per lb.).
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