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Recent drilling tested areas in the central D1 zone and in the area between D1 and Loma Larga to the south, which recent drilling showed to be a single mineralized structure. Iamgold drilled 12 holes on D1 and another eight on Loma Larga and the area between the two zones.
Between Loma Larga and the southern end of D1, one hole returned 59.3 metres grading 5.1 grams gold per tonne, with 30 grams silver and 0.3% copper, and another 67.5 metres grading 10.3 grams gold and 28.2 grams silver per tonne, plus 0.8% copper. A third ran 31.4 grams gold and 50.7 grams silver per tonne, plus 2.4% copper, over 22.3 metres.
Five other holes in the area returned significant mineralization, with gold grades of 1.8 to 5.1 grams per tonne over core lengths of 10 to 118 metres. Most of the mineralization in the area is in flat to shallow-dipping zones of silicified volcanic rock, broken up by near-vertical faults.
The area drilled in the recent work is about 250 metres wide, over a 100-metre strike length, and is about 150 metres south of the southernmost holes in the D1 zone.
Drill holes in the D1 zone itself intersected zones 10 to 50 metres thick, with average gold grades over the whole intersection ranging from 1.7 grams to 8 grams per tonne. The best intersection was a 50.4-metre zone grading 7.9 grams gold and 50.7 grams silver per tonne, with 0.8% copper, in hole 197.
The drilling follows up on earlier testing of D1 and Loma Larga, which intersected widths and grades consistent with recent drilling. That campaign included a hole (hole 168) through a high-grade area in D1 that intersected 28 metres grading 61.9 grams gold and 69.5 grams silver per tonne, plus 1.8% copper.
In that phase of drilling, 10 holes drilled on D1 all cut mineralized core lengths, mainly ranging from 20 metres to 40 metres, but with two significantly longer intersections: one 58.4-metre interval grading 6 grams gold and 80.7 grams silver per tonne, plus 0.6% copper, and one 73.7-metre intersection grading 5.7 grams gold and 47.4 grams silver per tonne, plus 0.3% copper.
Northwest of D1, two holes drilled to test for extensions to D1 intersected silicification with lower grades, cutting 18 metres grading 1 gram gold per tonne and 32.3 metres grading 1.3 grams. Iamgold is evaluating the results.
Iamgold owns a 100% interest in Quimsacocha, a 130-sq.-km property about 40 km southwest of Cuenca, Ecuador.
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